Surly DUH System - Single Speed Chip and Hardware MPFN-TB00329500 front/rear front axle length 125mm

front/rear front axle length 125mm thread pitch M12x1

}SockGuy Classic Boom Pow Socks - 3 inch Black Large/X-Large

and maneuverability while allowing for unmatched versatility

Forged alloy BB386Evo spindle

Headset spacer kits are turned from solid bar-stock to ensure precise and parallel surfaces and guarantee proper headset preload

Surly DUH System - Single Speed Chip and Hardware MPFN-TB00329500 front/rear front axle length 125mmIncludes 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.