Surly Ultra New Rear Hub - Threaded x 135mm 6-Bolt Fixed Black 32H CheckoutTitle=SRAM 46 Tooth 107mm BCD x 4-Bolt 1x12-Speed X-Sync Chainring Resistance Magnetic Interactive Yes Flywheel

Resistance Magnetic Interactive Yes Flywheel 7kg Connectivity ANT+ BT Maximum Resistance 1500w Adjustments Virtual Slope 0% to 10%

The brand-new Madshus Pro Ripstop upper and Race Wrap 2

Brake Lever Actuation HydraulicBrake Caliper Type Post MountRotor Included NoBrake Lever Use LeftColor Diffusion Black AnodizedHydraulic Fluid Type Mineral OilPad Compound OrganicHydraulic Hose Length 2000Adjustable Reach YesAdjustable Contact Point No

Multi-level cushioning at the top maximum finger grip zone at the bottom

Conversion kits that allow riders to switch from a geared rear end to a single speed set up without buying a new wheel

Surly Ultra New Rear Hub - Threaded x 135mm 6-Bolt Fixed Black 32H CheckoutTitle=SRAM 46 Tooth 107mm BCD x 4-Bolt 1x12-Speed X-Sync Chainring Resistance Magnetic Interactive Yes FlywheelSurly Ultra New Disc Rear Hubs. 6061 T6 forged hub shell (same as the Surly New); 6901 bearings Axle is quick release and bolt on compatible Stainless 6mm bolts are included; quick release skewer is NOT included 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 Color