Rear

- Lightweight sprung-type chain tensioner replaces derailleur for running a 1-Speed drivetrain on a vertical dropout frame - Variable tension and position (Can be used on rigid frames or suspension frames with varying chain length) - Supplied with 2 springs to provide pull-Up or push-down function - Superlight CNC machined alloy body, pivot bolt and sealed bearing pulley - Steel no-jump guide cage

- Bargain priced tensioner for turning a geared bike into a single speed - Fixed position aluminum arm with quiet rubber sealed bearing pulley - Mounts in place of derailleur