NEW Surly Ultra New Hub Axle Kit for 120mm Rear Fix/Free Black brand_fulcrum The EX1 drive train was

The EX1 drive train was designed specifically for the demands of electric-assist mountain bikes: a wide gear range with bigger jumps between gears and sturdy components to handle higher torque loads

and three sets of water bottle mounts

Nothing holds you back from entering the All-Mountain thrills with the M 1900 Spline wheels

200 x 559 mm XL

Foam inserts are removable for easy washing

NEW Surly Ultra New Hub Axle Kit for 120mm Rear Fix/Free Black brand_fulcrum The EX1 drive train wasSurly Ultra New Axle Kits are for upgrading the internals of your existing Surly New hubs or replacing the internals on your Surly Ultra New hubs. Each kit contains an axle, two 6901 cartridge bearings, two aluminum dust shields, two stainless steel cones, two stainless steel 6x1mm bolts, and two stainless steel bolt washers Axle is quick release and bolt on compatible; bolts included, QR is NOT included Compatible with Surly New hubs (upgrade kit)