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Niner SIR 9 3-Star Singlespeed

Niner SIR 9 3-Star Singlespeed
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The SIR 9 is a comfortable, capable, hand-built bike made from proven, air-hardened, heat-treated Reynolds 853 steel. When you're spinning up the steeps, bombing down the backcountry, and grinding out the final miles as the sun sinks into the horizon, you need a bike you can trust.

Seeking simplicity, silence, and a single speed drivetrain? Look no further than our 3-Star Shimano XT single speed build. Mated to our SIR 9 frame and FOX suspension, your single-speed adventures are ready and waiting.

- Niner alloy wheels, 30mm internal width
- Shimano SLX cranks and Niner Cogalicious cog
- KS LEV Si dropper post


Frame Hand welded Reynolds 853 steel; external cable routing; integrated bottle, bag, rack and fender mounts; 12x148 thru axle
Fork Fox 34 Float Factory EVOL Fit 4, 3 Position W/Adj, Kashima Coat, 120mm, 110x44mm Offset
Wheels Front: Niner Alloy, 30mm Internal Width, 110x15mm
Rear: Niner Alloy, 30mm Internal Width, 148x12mm
Tires Front: Schwalbe Nobby Nic Evo Super Trail TLE Addix Speedgrip 2.6"
Rear: Schwalbe Nobby Nic Evo Super Trail TLE Addix Speedgrip 2.35"
Bottom Bracket Niner Biocentric 30
Crankset Shimano SLX M7000, 32T
Cassette/Freewheel Niner Cogalicious 20T
Chain SRAM 1 sp
Brakes Shimano XT M8100, Metal Pad W/Fin
Rotors 180/160 XT RT86
Brake Levers Shimano XT M8100
Handlebars Race Face Next R 800mm Wide, 20mm Rise, 35mm Clamp
Tape/Grips Niner Grrrips L/O Soft Compound
Stem Race Face Turbine R 40mm, 35mm Clamp
Headset Niner Internal ZS SHIS Description ZS44/28.6|ZS56/40
Seatpost KS LEV Si
Saddle Niner Custom TR With CrMo Rails, Embossed Niner Graphic
Pedals Sold separately
Accessories & Extras Stans No Tubes Sealant (2 x 2oz Bottles)

* Subject to change without notice.

Part Numbers

Option UPC MPN Store SKU
Cement/Black/Copper / Large 031312105206 03-131-21-05-20 210000079081