Mtb Single Chain Ring GuideCOMPATIBILITY: Clamp Size: 34. 9mm with adapter to 31. 8mm. Used to stop chain drop. Decreasing chain jump. Compatible with 9, 10, 11,12 speed single chainring crankset. STRONG: The body is made of AL6061 T6 hardened aluminum with quality plastic guard. EASY TO USE: Simply clamp on the seat tube, and stops chain dropping. Please watch the video in the listing for more details. LIGHT: The package weight is only 44g.

- Marta models up to 2008- Marta SL models up to 2008 Features:

Find compatible bikes here

Does not fit : Shimano 12-speed

Rear 730mm

The 29 x 2

- Seat post mount included

ROLLER BEARING CLUTCH™ technology delivers maximum drivetrain stability—even through the most punishing terrain

125 Black (57-305)

Better hand and body positions ensure more power

Compatible chain: IG/HG

: 3hrs Quad DRL Steady: 8:30hrs

ClickTec button interface