Warp 9 Ultra Bee Jack Shaft Sprocket

The front jack shaft sprocket for the Surron Ultra Bee, machined from hardened tool steel and black oxide coated so it lasts longer than the sprocket it replaces. A new jackshaft seal is included and comes already installed in the sprocket.

Thirteen tooth is the stock size and a straight replacement for a worn original. Fourteen tooth adds top speed and extends range by dropping motor rpm at a given road speed, at the cost of low-end torque. One tooth at the front is a bigger gearing change than one tooth at the rear, so treat it as a real change rather than a fine adjustment. Check chain adjustment before and after.