Kit is for use on a open or closed primary on kick starter models. 
The outer front pulley guides allow 100% belt-to-pulley contact for superior belt tracking includes a 1-1/2" belt. The idler system is not required as this unit is for use with adjustable transmission only. Clutch hub and clutch plates are not included. 
Fits:
FL 1955-1964 4-speed 
UOM: 1 - KIT 
Country of Origin: USA