Surly DUH - Single Speed Rear Thru-Axle - 12x148mm 20g }Continental Supersonic Tube - 26

}Continental Supersonic Tube - 26 / 650c x 18 - 25mm 60mm Presta Valve

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Model Comfort Classic Rails Steel Top Vinyl Color Black LxW (mm) 255x175

Desgined to increase the stiffness of the EPS front derailleur on frames with flexible braze-on mounts especially frames with carbon fiber mounts

Surly DUH - Single Speed Rear Thru-Axle - 12x148mm 20g }Continental Supersonic Tube - 26The 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 (FS0268 sold separately) to complete the setup. Note: The Surly DUH single speed thru axle only works with the DUH single speed chip and hardware. Rear Axle Type 12mm Thru x 148mm