30 series torq kit for Yerf-dog karts

This is a direct replacement kit for the popular Yerf-dog go-karts. This kit has a 30 series driver pulley 3/4" bore for the crankshaft and a 7" diameter 5/8" bore driven pulley for the jackshaft. Yerf-dog is one of the few go-karts that use the 7" driven pulley that gives extra torque. 
Kit Includes-
3/4" Driver pulley Manco number 5957, Comet number 203814 or 219552
5/8" bore driven pulley 7" diameter, Comet   #219457
30 series drive belt asymmetrical, Comet# 203591