Surly - Bikes/Frames DUH Axle 12x142mm Black

The Surly DUH system single-speed rear axle helps transform your geared bike into a single-speeding machine. You will also need a Surly DUH single-speed chip and hardware (sold separately) to complete the setup.

Note: The Surly DUH single-speed thru-axle only works with the DUH single-speed chip and hardware.