Product Specs:
This clutch mount with jackshaft is compatible with most go karts, minibikes, or ATVs.
The jackshaft is 5/8″ OD x 10-1/2″ L with 3/16″ keyway.
The clutch mount itself is 11″ x 4″ and is 1/8″ thick it is a steel product.
The clutch mount has (2) 5/8″ high speed bearings pressed in.
Bearing to Bearing measurement is 5-3/4″
* This was compatible with for many of the go karts. Fits all go-karts with engines.