Surly - Bikes/Frames DUH System - Chips Geared Black

Geared

Includes Surly DUH system drive side and non-drive side geared chips and hardware, as well as a UDH hanger for a complete geared setup. You will also need a 12mm thru-axle, 175mm length, 1.0 thread pitch to complete the setup.

Single Speed

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 (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.