Mountain Frames

From early pioneers like Rob Warner in the 1990s to world champions including Myles Rockwell (2000) and Danny Hart (2011), many of downhill racing's greatest legends have flown the flag for Giant over the years. This special-edition frameset celebrates that heritage with vintage Giant colors and design. Beneath the stunning paint lies cutting-edge DH design and technology including full-composite construction, an all-new Maestro suspension system, and ultra adjustability to tackle different types of DH terrain. KEY PERFORMANCE FACTORS RACE-READY SUSPENSION A new Maestro rear suspension system, developed over several seasons of World Cup racing with Giant engineers and pro athletes, features 200mm of smooth, active travel for race-winning speed. The rear suspension is paired with a 203mm travel fork, providing superior confidence and control on the most extreme DH racetracks and trails. ULTRA ADJUSTABLE Three flip chips provide unprecedented adjustability. First, a three-position Maestro flip chip lets you dial in frame geometry for your riding style and terrain. Next, a new headset flip chip adjusts reach so you can easily achieve perfect positioning. And finally, a rear dropout flip chip lets you adjust the overall wheelbase and handling characteristics. REAR WHEEL OPTIONS Choose either a 29-inch or 27.5-inch rear wheel. Frameset can be built with a mixed wheel "mullet" setup that many racers prefer with the smaller rear wheel creating a snappy, agile feel and increased saddle-to-tire clearance in the rear. For those who favor the rollover speed and stability of two 29-inch wheels, you can easily swap out the rear wheel. HIGHLIGHTS: Thoroughly reengineered from the ground up, the new Glory Advanced features a lightweight, super strong composite frame, 200mm of Maestro rear suspension (with a 203mm fork up front), and multiple flip chips to dial in geometry, rear wheel size, fit and positioning. The stock setup is a mixed-wheel configuration with a 29-inch front and 27.5-inch rear, striking a perfect balance of roll-over speed and maneuverability. Riders also have the option to switch to a 29-inch rear wheel using a simple two-position flip chip on the rear dropout. The legend is back. ADVANCED COMPOSITE Mainframe and rear swingarm crafted with high-performance grade raw carbon fiber and custom resin that's custom made in Giant's own composite factory. Handcrafted monocoque construction makes it extremely lightweight, stiff and compliant. MAESTRO SUSPENSION Four strategically positioned pivot points and two linkages all work together to create a single floating pivot for the most active, efficient and independent suspension system on the trail. ADVANCED FORGED COMPOSITE A state-of-the-art high-pressure molding process is used to produce the hybrid aluminum/carbon fiber upper rocker link that's lighter, stiffer and stronger than pure aluminum. ADJUSTABLE DH GEOMETRY Frame geometry can be adjusted between three settings to match riding style and terrain. You can select a 61.6, 62 or 62.3-degree head angle and corresponding 78.4, 78.8, or 79.1-degree seat tube angle, resulting in a 13, 8 or 3mm bottom bracket drop (size M/L). ADJUSTABLE WHEELBASE A flip chip on the rear dropout can be set to a Long or Short position to adjust the wheelbase and rear-center measurement. The Short position results in quicker, more agile handling for tight, technical terrain. The Long position extends the wheelbase for added stability on faster trails with longer straightaways and high-speed cornering. REACH ADJUST A three-position flip chip at the headset lets riders quickly dial in cockpit dimensions and geometry. This modular system has two positioning chips that can be removed and swapped to achieve a Short (-5mm), Mid (0mm) or Long (+5mm) reach and fine-tune the bike's handling and rider positioning. REAR WHEEL OPTIONS Riders can choose either a 29- or 27.5-inch rear wheel, paired with a 29-inch front wheel. The larger 29-inch option improves stability and roll-over capabilities, while the 27.5 option delivers a more agile, snappier feel. It's a quick and easy change to adjust the bike's handling and feel. MEGADRIVE A massive rectangular down tube and oversized top tube provide superior lateral and torsional steering precision. The precisely engineered, rectangular shaped down tube yields unprecedented steering and pedaling stiffness.

Go fast, get rowdy and nail new lines. With a full-composite chassis, developed with Giant's enduro racing pros, this hard-charging 29er has 160mm of maestro rear suspension, adjustable geometry, and the option to switch to a 27.5-inch rear wheel. KEY PERFORMANCE FACTORS: - Race-bred suspension A Maestro rear suspension system with 160mm of travel, paired with a 170mm fork, was developed and tested under the extreme conditions of Enduro World Series races. The trunnion mount shock has a longer stroke (62.5mm compared to 60mm on the previous gene - Adjustable enduro geometry Flip chip technology lets you switch between three settings depending on the terrain. You can select a 63.5, 63.9 or 64.2-degree head angle and corresponding 78.3, 78.7 or 79-degree seat tube angle, resulting in a 35, 30 or 25mm bottom bracket drop (size - Rear wheel options Riders can choose either the stock 29-inch rear wheel or switch to 27.5. The larger 29-inch option improves stability and roll-over capabilities, while 27.5 delivers a more agile, snappier feel. It's a quick and easy way to adjust the bike's handling and TECHS & FEATURES: - ADVANCED COMPOSITE TECHNOLOGY Giant's High Performance Grade raw carbon material is used to produce this custom frame material in our own composite factory with a high stiffness-to-weight ratio. The front triangle of these framesets is assembled and molded as one continuous piece in a proprietary manufacturing process called Modified Monocoque Construction. - ADVANCED FORGED COMPOSITE TECHNOLOGY A state-of-the-art high-pressure molding process is used to produce complex-shaped carbon fiber components that are lighter, stiffer and stronger than similar components made from aluminum. This technology is used in critical performance parts such as Maestro Suspension rocker links. - MAESTRO SUSPENSION TECHNOLOGY Four strategically positioned pivot points and two linkages all work together to create a single floating pivot for the most active, efficient and independent suspension system on the trail. - OVERDRIVE Giant's original oversized fork steerer tube technology. Designed to provide precise front-end steering performance, the system's oversized headset bearings (1 1/4" lower and 1 1/8" upper for road, 1 1/2" lower and 1 1/8" upper for mountain) and tapered steerer tube work in conjunction to provide optimal steering stiffness. - TUBELESS SYSTEM Fewer flat tires. Greater traction. Less rolling resistance and a smoother, faster ride. Giant's Tubeless System makes it easier than ever to experience all these benefits. - FLIP CHIP - MAESTRO The flip chip allows riders to quickly adjust the geometry of their Maestro-equipped mountain bike to better suit how and where they ride. It lets riders change the headtube/seattube angles and bottom bracket height via eccentric (offset, two-position) hardware located on the upper rocker arm.

GO FAST, GET ROWDY AND NAIL NEW LINES. WITH A FULL-COMPOSITE CHASSIS, DEVELOPED WITH GIANT’S ENDURO RACING PROS, THIS HARD-CHARGING 29ER HAS 160MM OF MAESTRO REAR SUSPENSION, ADJUSTABLE GEOMETRY, AND THE OPTION TO SWITCH TO A 27.5-INCH REAR WHEEL. Key Performance Factors Race-bred suspension A Maestro rear suspension system with 160mm of travel, paired with a 170mm fork, was developed and tested under the extreme conditions of Enduro World Series races. The trunnion-mount shock has a longer stroke (62.5mm compared to 60mm on the previous gene Adjustable enduro geometry Flip chip technology lets you switch between three settings depending on the terrain. You can select a 63.5, 63.9 or 64.2-degree head angle and corresponding 78.3, 78.7 or 79-degree seat tube angle, resulting in a 35, 30 or 25mm bottom bracket drop Rear wheel options Riders can choose either the stock 29-inch rear wheel or switch to 27.5. The larger 29-inch option improves stability and roll-over capabilities, while 27.5 delivers a more agile, snappier feel. It’s a quick and easy way to adjust the bike’s handling

Big adventures require a bike that can rise to the occasion. Arctodus is named after Arctodus simus, an Ice Age behemoth that was the largest bear to ever walk the Earth. Like its namesake, Arctodus the bike is versatile, strong, and ready to explore. It has adjustable geometry, a durable steel frame, a massive front triangle for a frame bag, lots of cargo mounts, and can clear the biggest fat bike tires on the market. Arctodus is ready for afternoon exploration, polar expeditions, and everything in between. - The Biggest Tire Clearance Arctodus was built around a 26" x 4.8" tire for optimal handling and control on loose trails. It can fit the biggest fat bike tires in the world. The biggest fat tire on the market is 26" x 5.05" and Arctodus eats them like a snack with room to spare. Same as 27.5" x 4.5", the biggest 27.5" tire available. Arctodus is the only bike to clear tires this big with a 12-speed drivetrain without chain interference. When a bike is created for big rides with fresh snow, it needs to fit tires that were designed for the same reason. This is a bike that prays for snow and cuts its own trail. - One Bike, Three Wheelbase Lengths A key feature in all Otso bikes is adjustable geometry and the ability to adapt the bike for the ride ahead. The patented Tuning Chip rear dropout system can change wheelbase length by up to 20mm, raise or lower the bottom bracket height by up to 4mm, and change the head tube angle by +/- 0.5º. Use the rear position when the trails are loose and you need as much control as you can get. Use the front position when the snow is firm and the trails let you take turns with a little speed. No matter the conditions, Arctodus has an answer. - Designed for Exploring There's no need to wait for the trail groomer. Arctodus was made for foot trails, forest paths, and snow-covered frozen lakes. The bombproof steel frame can withstand the demands of an expedition. A large front triangle can fit a healthy full-frame bag. The carbon fork has mounts on either side for cargo. A rear frame can be attached via mounts on the seat stays and Tuning Chip hardware. Even the geometry is catered for exploration, with extra trail for optimal flotation and bottom bracket height that will ride above deeper snow. Whether you're exploring local trails or a national forest, you can trust Arctodus to keep you riding. - Narrow Q Factor Arctodus has a 100mm bottom bracket. This is 30-40mm narrower than other fat bikes that have the same tire clearance. Ride with massive tires without compromising handling. - Suspension Correct All Otso frames feature suspension-corrected geometry. Arctodus is compatible with suspension forks that have up to 120mm of travel. A few options are available on the Custom Bike Builder. - Stability and Floatation Arctodus geometry was designed for optimal riding on fresh trails. The 68º head tube angle paired with massive tires gives Arctodus more trail than other fat bikes. Even the BB height was selected for clearance in deep snow. - Dropper Compatible Snowy trails are good with dropper posts, too. A port near the bottom bracket fits a cable and housing for a cable-actuated dropper post.

Techs & Features: Advanced Composite Technology Giant’s High Performance Grade raw carbon material is used to produce this custom frame material in our own composite factory with a high stiffness-to-weight ratio. The front triangle of these framesets is assembled and molded as one continuous piece in a proprietary manufacturing process called Modified Monocoque Construction. Advanced Forged Composite Technology A state-of-the-art high-pressure molding process is used to produce complex-shaped carbon fiber components that are lighter, stiffer and stronger than similar components made from aluminum. This technology is used in critical performance parts such as Maestro Suspension rocker links. FlexPoint Pro Suspension Technology Developed as a superlight rear suspension setup for XC bikes that demand efficiency, control and responsive handling, FlexPoint Pro is a linkage-driven, single-pivot system that delivers 100mm of rear-wheel travel. It’s engineered with a full-composite swingarm that significantly reduces overall frame weight.

Meet the Ripley, your new best friend for every trail adventure. The award-winning bike has been updated with more travel and slacker geometry, making it even more capable and fun. It rivals the speed of an e-bike uphill while offering snappy, playful performance with 130mm of ultra-efficient dw-link travel. Need to stash your snacks? The Ripley now features internal frame storage for all your stuff. Plus, with expanded size ranges, everyone gets the perfect fit. Whether you’re popping wheelies or conquering climbs, the Ripley is game.

The Hoot Ti is a premium titanium hardtail that was designed for bringing the fun to any line on the trail. The frame tubing is the 3Al/2.5V grade 9 titanium that has been an industry favorite for decades. This titanium tubing was selected because it is lightweight, lively, and emphasizes the playful Hoot Ti geometry. The bike features a custom Fox 36 Performance Elite Fork with 140mm of travel to optimize the Hoot Ti ride experience. 3-D titanium printing in the UDH rear dropouts and chainstay yoke pair with short stays for a playful ride. However you choose to ride this titanium hardtail, it’s guaranteed to be a Hoot. PLAYFUL GEOMETRY The geometry of Hoot Ti has one goal: fun. The 425mm chainstays are core to Hoot Ti because they add nimble, playful handling. The 65º head tube and 76º seat tube angles pair for a balanced riding position, while that slack head tube angle, long reach, and low bottom bracket drop of 60mm allow for confident downhill riding on aggressive trails. A shorter standover and lower top tube allow for longer travel dropper posts and more creative, playful riding without the bike getting in the way. Every detail of Hoot Ti contributes to a bike that will bring the party to any trail ride. TITANIUM FRAME The titanium tubing used in the Hoot Ti frame is the 3Al/2.5V grade 9 titanium tubing that has been an industry favorite for decades. This specific frame material was chosen because it is lightweight, lively, and responsive. These are necessary qualities for tubing that need to live up to the playful requirements of the Hoot Ti geometry. 3-D TITANIUM PRINTING The key to bringing Hoot Ti to life. 3-D titanium printing is present in the rear dropouts and the chainstay yoke. Otso engineers leveraged this technology to give Hoot Ti short 425mm chainstays while maintaining the 29” x 2.6” tire clearance. This also allowed for a hidden dropper post routing port behind the BB shell and twin cable clamps that are molded into the chainstay yoke. 3-D titanium printing is also featured at the rear UDH dropouts for a clean look and a brake mount inside the rear triangle. CUSTOM FORK Hoot Ti is built with a custom Fox 36 Performance Elite 140mm travel fork. While any 140mm fork will work with Hoot Ti, Otso engineers worked directly with Fox for this custom option because they wanted the 36mm stanchion of the Fox 36 with the 140mm travel of the Fox 34. This sturdier stanchion is better suited for aggressive, chunky trail riding. The fork features the new Grip X damper, a 44mm offset, bleeders on the fork lower, and black stanchions with black lowers for a stealth look.

Given the choice between clearing challenging lines and taking them on with gusto, you prefer the latter. If this sounds like you, the Rustler Carbon frame is the perfect platform for your ultimate trail bike build. The Split Pivot rear suspension system with a Fox Float DPS Performance shock, flip chip geometry adjustment, and 27.5 x 2.3–2.8-inch tire clearance let you build the bike that suits your playful style. Get excited for a trail-roosting rig with impeccable pedaling efficiency—a surefire recipe for fun on many trails.

Voytek changes the fat bike game. It is fast, lightweight, agile, and can handle even the sharpest turns of your local single-track with ease. Think of it as a mountain bike that can fit fat tires with adjustable geometry. We paired a narrow pedal stance-aka Q factor - with aggressive XC race geometry to build a fat bike that can intuitively handle snowy trails like your mountain bike can handle summer single-track without sacrificing ride quality. When the weather turns and the snow turns to dirt, swap out the 26" fat wheelset for a 29" MTB wheelset to keep the party going all year. THE Q-FACTOR IS THE KEY The Voytek has the narrowest Q-factor of any fat bike in the world at 183mm. With a narrow Q-factor, your weight is closer to the centerline of the bike. This is especially important when cornering because it allows for tight, responsive control - the wider Q-factor found on most fat bikes spreads out your pedals and creates a floppy, unstable feel. The Voytek frame was designed around an 83mm bottom bracket, whereas most fat bikes have a bottom bracket north of the 100-110mm range. With the Voytek, you don't need to compromise agile handling to ride up to 4.6" tires. ONE BIKE, THREE WHEELBASE LENGTHS Our Tuning Chip rear dropout is at the heart of the versatile Voytek. With a quick change in positions, the wheelbase of the Voytek can be extended or shortened by up to 20mm, which also changes the bottom bracket height by up to 4mm and the head tube angle by +/.5º. In the forward position, you've got an aggressive, responsive Voytek for your next race. In the rear position, you've got that same intuitive handling but with added stability to make it easier to ride in deep snow or adverse terrain. In the middle, well, that's the best of both worlds. PLUS OR FAT? FAT OR PLUS? We're internally divided here as to whether the Voytek is a plus bike that can handle fat tires or if the Voytek is a fat bike that has the handling worthy of a plus bike. When the trails are packed with snow, we're riding 4" tires. When spring comes and the trails turn to dirt, we swap out tires and ride 29" plus until winter returns. The versatility of the Voytek blurs the lines of plus and fat, keeping the party going all year long. MODERN GEOMETRY Voytek's longer top tube, short chainstays – the shortest in the world for a fat bike – and slightly slacker head tube angle mean more speed and more fun. SUSPENSION CORRECT Voytek's suspension-corrected geometry is compatible with an Otso carbon rigid fork or up to 120 mm travel suspension fork. COMPETITOR TESTED, ISO APPROVED Voytek's patent-pending frame design exceeds all ISO frame safety standards and has been proven over thousands of miles of test riding, including the legendary Iditarod Invitational and Arrowhead 135 competitions. DROPPER COMPATIBLE The EPS molded carbon frame of the Voytek was designed to accept internally routed dropper seat posts.

The Timberjack Ti absolutely owns all paths — wooded, skinny, and flowy, making you the master of every ride thanks to its multi-talented character. The frame is constructed from custom, top-shelf titanium with a fast-handling geometry to deliver the stiffness needed to whip through tight turns and accelerate with instant power, while super-short chainstays make it easy to lift over obstacles so you can stay with the flow. Run it as a 27.5+ with up to 3-inch tires for maximum fun, or go for efficiency with a 29er wheelset — with Salsa's Alternator Dropouts you get an impressive grip of wheelset and drivetrain options to suit your style and intention.

Fargo is Salsa’s original drop-bar mountain bike. This cult classic is designed for mixed-surface riders and bikepackers that like variety in their routes, with the capability to carry everything needed when out for days on end. Carefully crafted with 3/2.5 seamless triple-butted titanium tubing and paired with our Cutthroat Carbon Deluxe fork, this frameset is ready for any dream-bike build. - 3/2.5 seamless triple-butted titanium tube set provides appropriate stiffness and compliance for fantastic ride quality - Alternator 1.0 Flat Mount dropouts allow for flat-mount brakes and many different drivetrains, including single speed and belt drive - Cutthroat Carbon Deluxe fork features two sets of Three-Pack mounts, lowrider rack mounts, internal dynamo cable routing, flat-mount brake mounts, and abrasion-resistant plates - Wheel size versatility: run 27.5+, 29, or 29+ wheels and tires (29 x 2.6" max on XS frames) - Rear rack mounts (designed for use with the Salsa Alternator Standard Rack) - Fender mounts (maximum 29 x 2.2" tire clearance with fenders) - Clearance for 29 x 3.0" tires without fenders (29 x 2.6" max on XS frames)

Shred hard and shred fast with this lively 29er. it’s built on an all-new full-composite frame with adjustable geometry, giving you smooth control to blitz technical trails at speed. ADJUSTABLE FRAME GEOMETRY - New flip chip feature lets you change the head tube and seat tube angles, as well as the bottom bracket height, to fine-tune handling for varying trail conditions and individual riding style. 29ER CONFIDENCE AND CONTROL - Larger 29-inch diameter wheels optimized to roll over rough terrain with balance and stability, giving you the momentum to tackle technical climbs and the confidence to fly on fast, rugged singletrack descents. PROGRESSIVE TRAIL DESIGN - Lightweight Advanced-grade composite frameset features a longer reach and steeper seat tube for aggressive trail riding and improved climbing capabilities. Updated Maestro rear suspension features 120mm of rear wheel travel paired with a 130mm fork up front. ADVANCED COMPOSITE TECHNOLOGY - Giant’s High Performance Grade raw carbon material is used to produce this custom frame material in our own composite factory with a high stiffness-to-weight ratio. The front triangle of these framesets is assembled and molded as one continuous piece in a proprietary manufacturing process called Modified Monocoque Construction. ADVANCED FORGED COMPOSITE TECHNOLOGY - A state-of-the-art high-pressure molding process is used to produce complex-shaped carbon fiber components that are lighter, stiffer and stronger than similar components made from aluminum. This technology is used in critical performance parts such as Maestro Suspension rocker links. FLIP CHIP - MAESTRO - The flip chip allows riders to quickly adjust the geometry of their Maestro-equipped mountain bike to better suit how and where they ride. It lets riders change the headtube/seattube angles and bottom bracket height via eccentric (offset, two-position) hardware located on the upper rocker arm. MAESTRO SUSPENSION TECHNOLOGY - Four strategically positioned pivot points and two linkages all work together to create a single floating pivot for the most active, efficient and independent suspension system on the trail. OVERDRIVE - Giant’s original oversized fork steerer tube technology. Designed to provide precise front-end steering performance, the system’s oversized headset bearings (1 1/4” lower and 1 1/8” upper for road, 1 1/2” lower and 1 1/8” upper for mountain) and tapered steerer tube work in conjunction to provide optimal steering stiffness.

Techs & Features: Advanced SL Composite Technology Professional Grade raw carbon fiber is woven in our composite factory to produce our lightest, stiffest, and highest-quality frames. This is the technology used by Giant’s pro racers in almost every cycling discipline. OverDrive Giant’s original oversized fork steerer tube technology. Designed to provide precise front-end steering performance, the system’s oversized headset bearings (1 1/4" lower and 1 1/8" upper for road, 1 1/2" lower and 1 1/8" upper for mountain) and tapered steerer tube work in conjunction to provide optimal steering stiffness.

The Salsa Heyday! C Deore 12 is a carbon fat-tire bike with the versatility to go wherever your imagination takes you. The carbon-fiber frame keeps weight down — especially nice when you're hefting it over downed trees deep in the backcountry. The 26 x 4.6" tires float over snow, sand, and other soft surfaces, but you can also fit 27.5 fat and 29+ wheels and tires for other missions. A mind-blowing number of cargo and accessory mounts let you bring more than just the bare necessities, and Mukluk's geometry ensures a stable ride even when loaded. Alternator 2.0 dropouts allow for multiple drivetrain options, but the stock Shimano Deore 12-speed is the perfect place to start.

Beargrease pairs a race-ready carbon frame with the capability of fat tires for the ultimate groomed-trail machine. Its trail geometry, dropper post, and 27.5" wheels grant you confidence in loose corners and descents and make for an all-season ripper. Frame and fork mounts for extra bottles and cargo make it easier to gear up for your long days out or even overnighters, and the high-performance XT/SLX drivetrain is the icing on the cake. For light-and-quick confidence on any terrain, Beargrease is one of the best carbon fat-tire bikes out there.

The Horsethief Carbon Frameset is where your dream trail bike begins. The Horsethief frameset can be built with either 29-inch or 27.5-plus wheels, and the flip chip allows for subtle geometry tweaks. The Split Pivot rear suspension technology and 120mm Fox Float DPS Performance Elite shock are a recipe for incredible small bump compliance and traction. With this solid foundation in place, just add the parts that make you happy—we can’t wait to see what you do with it.

The Cassidy Alloy Frame gives you the confidence to seek out the steepest, most technical trails out there. Its stiff and durable aluminum frame stands up to trail punishment, whether you're enjoying a full day of shuttle runs, barreling through rugged rock gardens, or hitting drops and gaps. 165 mm of Split Pivot rear suspension offers progressive travel for the stoutest trails, with superior pedaling efficiency and consistent braking traction to boot. Build it up and go big.

Fargo is Salsa’s original drop-bar mountain bike. This cult classic is designed for mixed-surface riders and bikepackers that like variety in their routes, with the capability to carry everything needed when out for days on end. Carefully crafted with 3/2.5 seamless triple-butted titanium tubing and paired with our Cutthroat Carbon Deluxe fork, this frameset is ready for any dream-bike build. - 3/2.5 seamless triple-butted titanium tube set provides appropriate stiffness and compliance for fantastic ride quality - Alternator 1.0 Flat Mount dropouts allow for flat-mount brakes and many different drivetrains, including single speed and belt drive - Cutthroat Carbon Deluxe fork features two sets of Three-Pack mounts, lowrider rack mounts, internal dynamo cable routing, flat-mount brake mounts, and abrasion-resistant plates - Wheel size versatility: run 27.5+, 29, or 29+ wheels and tires (29 x 2.6" max on XS frames) - Rear rack mounts (designed for use with the Salsa Alternator Standard Rack) - Fender mounts (maximum 29 x 2.2" tire clearance with fenders) - Clearance for 29 x 3.0" tires without fenders (29 x 2.6" max on XS frames)

Designed to go where no normal fat bike can, the Surly Moonlander is for riders who want otherworldly capabilities on rocky shorelines, sand, snow, and desolate landscapes not yet discovered. It’s the ultimate choice for explorers who itch for the next great adventure, and aren’t afraid of what they might find. - Constructed from 100% Surly Chromoly Steel for excellent durability - Clearance for 24 x 6.25” tires, as well as 26 x 5.1", 27.5 x 4.8", and 29 x 3" - Comes with rack and fender mounts, as well as accessory mounts on both fork blades to enhance cargo capacity - Four frame sizes to fit most riders: SM, MD, LG, XL

We know you have a "dream build" list hidden away somewhere. Now’s the time to bring it to life on the Blackthorn Aluminum frame. This versatile all-mountain bike frame comes with a RockShox Super Deluxe Select + shock for 140mm of rear travel. Our tried-and-true Split Pivot suspension design offers a supple, supportive ride with incredible pedaling efficiency so you can take on a huge variety of trails. Start with the best all-mountain bike frame out there, hang your favorite components on it, and let it rip.

If there’s one thing Tom knows, it’s dirt. When he first designed the Ultra he knew it would appeal to riders who demand specific ride characteristics and dirt slaying only he could deliver- and that was in the 1980s! Good design withstands the test of time, and the latest iteration of the Ultra is a prime example. Like its predecessor from 30 years prior, the new Ultra occupies a unique ride space from cross-country riders looking to get rowdy and go big to enduro riders lusting for some all-mountain shredding. Designed around a 120mm travel fork and super stable Boost 148 spacing, most of the fun is in the wheels. Designed to accommodate 29" or 27.5" wheels, the Ultra is highly versatile. Throw on some 29s for some trail-smashing XC riding, or saddle up some 27.5+ for some serious no-holds-barred shredding. The Ultra is a rough and rugged trail master that doesn’t know when to quit. - Compatible with 27.5 x 2.8 and 29 x 2.4 tires - Internal routing for a dropper post - Boost 148x12 rear spacing

Karate Monkey is a highly versatile trail bike that plays the part of 29er and 27.5+ equally well. Karate Monkey delivers a resilient, lively ride on all sorts of gnarly terrain. Its frame is a highly-versatile canvas for whatever dirty masterpiece your brain cooks up. According to our computing machine (Thor) it can be set up in approximately 487 different configurations. Originally designed as a 29er (and the frame that helped spark the 29" wheel movement), the latest Karate Monkey is designed to perform just as admirably as a 27.5+ rig as well. This allows you to pick your poison — provided your poison is having a really great time while permanently donning a huge grin, of course. - Modern trail standards: dropper post compatibility, 44mm headtube, Gnot-Boost rear spacing, thru-axles, suspension corrected fork - Compatibility with most mountain bike standards makes it the perfect parts bin bike (no rim brakes allowed though) - Clearance for 29" x 2.5" or 27.5" x 3" tires

The Karate Monkey frame features updated, progressive trail geometry, a new tubeset, and Surly’s Gnot-Boost rear dropout system to support multiple drivetrain and wheel size configurations. - 100% Surly 4130 chromoly steel frame and fork; double-butted main triangle and 44mm headtube - Tubeset uses the same trumpet tubes found on Instigator 2.0 frame - Adjustable rear dropouts with 145mm Gnot-Boost spacing works with 142 x 12, 148 x 12mm, and 135mm w/ 10/12 washer - Internal dropper seatpost routing - 30.9mm seat tube ID - Clearance for 29 x 2.55 or 27.5 x 3 tires

The Karate Monkey features updated, progressive trail geometry, our custom trumpet tubeset, and Surly's Gnot-Boost rear dropout system. Available in a variety of colors, with multiple drivetrain and wheel size configurations.

The Karate Monkey features updated, progressive trail geometry, our custom trumpet tubeset and Surly’s Gnot-Boost rear dropout system. Available in a variety of colors, with multiple drivetrain and wheel size configurations. - 100% Surly Chromoly steel frame and fork; double-butted main triangle and 44mm headtube - The tubeset uses the same trumpet tubes found on Instigator 2.0 frame - Adjustable rear dropouts with 145mm Gnot-Boost spacing. Works with 142, 148 12mm thru, as well as 135mm w/ 10/12 washer - Internal dropper seatpost routing with 30.9mm seat tube ID - Clearance for 29 x 2.55 or 27.5 x 3 tires

As the first "plus" bike to hit the market, Krampus changed the way many people approach trail riding. It's shown people the light of how high-volume, large-diameter tires can vastly improve the ride experience. It's also done a bang-up job dispelling the myth that big tires make you slow. Krampus is kind of like the opposite of a mullet: long in the front and short in the rear. With a long toptube and compact chainstays, it takes trail-shredding abilities to the next level. A mullet may be business in the front, party in the back but Krampus makes partying its business. - Modern trail standards: dropper post compatibility, 44mm headtube, Gnot-Boost rear spacing, thru-axles, suspension-corrected fork - Compatibility with most mountain bike standards makes it the perfect parts bin bike (no rim brakes allowed though) - Clearance for 29 x 3" tires

As the first "plus" bike to hit the market, Krampus changed the way many people approach trail riding. It's shown people the light of how high-volume, large-diameter tires can vastly improve the ride experience. It's also done a bang-up job dispelling the myth that big tires make you slow. Krampus is kind of like the opposite of a mullet: long in the front and short in the rear. With a long toptube and compact chainstays, it takes trail-shredding abilities to the next level. A mullet may be business in the front, party in the back but Krampus makes partying its business. - Modern trail standards: dropper post compatibility, 44mm headtube, Gnot-Boost rear spacing, thru-axles, suspension-corrected fork - Compatibility with most mountain bike standards makes it the perfect parts bin bike (no rim brakes allowed though) - Clearance for 29 x 3" tires

The Krampus is the bike that started it all — the plus-size movement that is. Krampus features Surly’s Gnot-Boost rear hub spacing of 145mm; compatible with Boost 148 x 12mm thru-axle, 142 x 12mm thru-axle and 135mm quick-release hubs. - 100% Surly 4130 CroMoly steel frame and fork; double-butted main triangle and 44mm headtube - New tube-set uses the same trumpet tubes found on 2017 Karate Monkey frame - Gnot-Boost adjustable rear dropouts - Internal dropper seatpost routing - 30.9mm seat tube - Designed to fit up to 29 x 3.0” tires

Big adventures require a bike that can rise to the occasion. Arctodus is named after Arctodus simus, an Ice Age behemoth that was the largest bear to ever walk the Earth. Like its namesake, Arctodus the bike is versatile, strong, and ready to explore. It has adjustable geometry, a durable steel frame, a massive front triangle for a frame bag, lots of cargo mounts, and can clear the biggest fat bike tires on the market. Arctodus is ready for afternoon exploration, polar expeditions, and everything in between. THE BIGGEST TIRE CLEARANCE Arctodus was built around a 26" x 4.8" tire for optimal handling and control on loose trails. It can fit the biggest fat bike tires in the world. The biggest fat tire on the market is 26" x 5.05" and Arctodus eats them like a snack with room to spare. Same as 27.5" x 4.5", which is the biggest 27.5" tire available. Arctodus is the only bike to clear tires this big with a 12-speed drivetrain without chain interference. When a bike is created for big rides with fresh snow, it needs to fit tires that were designed for the same reason. This is a bike that prays for snow and cuts its own trail. ONE BIKE, THREE WHEELBASE LENGTHS A key feature in all Otso bikes is adjustable geometry and the ability to adapt the bike for the ride ahead. The patented Tuning Chip rear dropout system can change wheelbase length by up to 20mm, raise or lower the bottom bracket height by up to 4mm, and change the head tube angle by +/.5º. Use the rear position when the trails are loose and you need as much control as you can get. Use the front position when the snow is firm and the trails let you take turns with a little speed. No matter the conditions, Arctodus has an answer. DESIGNED FOR EXPLORING There's no need to wait for the trail groomer. Arctodus was made for foot trails, forest paths, and snow-covered frozen lakes. The bombproof steel frame can withstand the demands of an expedition. A large front triangle can fit a healthy full-frame bag. The carbon fork has mounts on either side for cargo. A rear frame can be attached via mounts on the seat stays and Tuning Chip hardware. Even the geometry is catered for exploration, with extra trail for optimal flotation and bottom bracket height that will ride above deeper snow. Whether you're exploring local trails or a national forest, you can trust Arctodus to keep you riding. NARROW Q FACTOR Arctodus has a 100mm bottom bracket. This is 30-40mm narrower than other fat bikes that have the same tire clearance. Ride with massive tires without compromising handling. SUSPENSION CORRECT All Otso frames feature suspension-corrected geometry. Arctodus is compatible with suspension forks that have up to 120mm of travel. A few options are available on the Custom Bike Builder. STABILITY & FLOTATION Arctodus geometry was designed for optimal riding on fresh trails. The 68º head tube angle paired with massive tires gives Arctodus more trail than other fat bikes. Even the BB height was selected for clearance in deep snow. DROPPER COMPATIBLE Snowy trails are good with dropper posts, too. A port near the bottom bracket fits a cable and housing for a cable-actuated dropper post."

Big adventures require a bike that can rise to the occasion. Arctodus is named after Arctodus simus, an Ice Age behemoth that was the largest bear to ever walk the Earth. Like its namesake, Arctodus the bike is versatile, strong, and ready to explore. It has adjustable geometry, a durable steel frame, a massive front triangle for a frame bag, lots of cargo mounts, and can clear the biggest fat bike tires on the market. Arctodus is ready for afternoon exploration, polar expeditions, and everything in between. THE BIGGEST TIRE CLEARANCE Arctodus was built around a 26" x 4.8" tire for optimal handling and control on loose trails. It can fit the biggest fat bike tires in the world. The biggest fat tire on the market is 26" x 5.05" and Arctodus eats them like a snack with room to spare. Same as 27.5" x 4.5", which is the biggest 27.5" tire available. Arctodus is the only bike to clear tires this big with a 12-speed drivetrain without chain interference. When a bike is created for big rides with fresh snow, it needs to fit tires that were designed for the same reason. This is a bike that prays for snow and cuts its own trail. ONE BIKE, THREE WHEELBASE LENGTHS A key feature in all Otso bikes is adjustable geometry and the ability to adapt the bike for the ride ahead. The patented Tuning Chip rear dropout system can change wheelbase length by up to 20mm, raise or lower the bottom bracket height by up to 4mm, and change the head tube angle by +/.5º. Use the rear position when the trails are loose and you need as much control as you can get. Use the front position when the snow is firm and the trails let you take turns with a little speed. No matter the conditions, Arctodus has an answer. DESIGNED FOR EXPLORING There's no need to wait for the trail groomer. Arctodus was made for foot trails, forest paths, and snow-covered frozen lakes. The bombproof steel frame can withstand the demands of an expedition. A large front triangle can fit a healthy full-frame bag. The carbon fork has mounts on either side for cargo. A rear frame can be attached via mounts on the seat stays and Tuning Chip hardware. Even the geometry is catered for exploration, with extra trail for optimal flotation and bottom bracket height that will ride above deeper snow. Whether you're exploring local trails or a national forest, you can trust Arctodus to keep you riding. NARROW Q FACTOR Arctodus has a 100mm bottom bracket. This is 30-40mm narrower than other fat bikes that have the same tire clearance. Ride with massive tires without compromising handling. SUSPENSION CORRECT All Otso frames feature suspension-corrected geometry. Arctodus is compatible with suspension forks that have up to 120mm of travel. A few options are available on the Custom Bike Builder. STABILITY & FLOATATION Arctodus geometry was designed for optimal riding on fresh trails. The 68º head tube angle paired with massive tires gives Arctodus more trail than other fat bikes. Even the BB height was selected for clearance in deep snow. DROPPER COMPATIBLE Snowy trails are good with dropper posts, too. A port near the bottom bracket fits a cable and housing for a cable-actuated dropper post.