Surly Ultra New Rear Hub - Threaded x 130mm Rim Brake Fixed/Free Black 32H trainer accessories HOLLOWTECH II Hollow-forged Crank limits

HOLLOWTECH II Hollow-forged Crank limits weight while optimizing power transfer

Torque 4Nm with T20 tool

and least warming for high-intensity activity

The rolling resistance of the slow wheels is increased using our patented ISR (internal speed reducer) that weighs only 10 grams

The 8-bolt interface is compatible with power and non-power AXS spiders and integrated chainrings

Surly Ultra New Rear Hub - Threaded x 130mm Rim Brake Fixed/Free Black 32H trainer accessories HOLLOWTECH II Hollow-forged Crank limitsSurly Ultra New Rear Hubs Non Disc. Axle is quick release and bolt on compatible Stainless 6mm bolts are included; quick release skewer is NOT included 6061 T6 forged hub shell (same as the Surly New); 6901 bearings 4130 CroMoly axle and stainless cones; agressive knurling on cones and bolt caps for reduced slippage New axle cone system uses uses a specific shouldered axle that allows the hubs to be completely adjustment free and simple to service