Surly DUH System - Single Speed Chip and Hardware Description-2-Hole Bolt Pattern for MTB Shoes LINING - Shell Liner construction:

LINING - Shell Liner construction: Salomon’s most advanced construction

120mm travel

Gear 1 - 100% Direct Drive Gear 2 - 138%

Rail on the side to easily slide it in your car

Surly DUH System - Single Speed Chip and Hardware Description-2-Hole Bolt Pattern for MTB Shoes LINING - Shell Liner construction:Includes a Surly DUH system single speed chip and hardware to transform a geared bike into a single speeding machine. You will also need a Surly DUH single speed rear thru axle (FS0270 sold separately) to complete the setup. Note: The Surly DUH single speed chip and hardware only work with the Surly DUH single speed thru axle.