Surly DUH Single-Speed Conversion Kit - Chip & Hardware for Gears Size_M4 time-trial position for maximum comfort

time-trial position for maximum comfort during race-day efforts

along with four customizable storage boxes for tools and spray cans-keeping your workspace organized

these cranksets are compatible with 135/142 Road Disc Hubs and support 12-speed drivetrains

built for the toughest environments

Surly DUH Single-Speed Conversion Kit - Chip & Hardware for Gears Size_M4 time-trial position for maximum comfortSurly DUH System Single Speed Chip and Hardware Convert Your Gears to a High Performance Single Speed Setup Upgrade your bicycle's versatility with the Surly DUH System the industry leading single speed conversion kit designed for durability, simplicity, and optimal performance. This comprehensive package includes a premium quality Surly DUH single speed chip and hardware, allowing you to effortlessly transform your geared bike into a lightweight, low