68-45 drive ratio. This is a bolt-in belt drive kit that will fit inside the OEM primary housing; without much modification. Designed to be used in rear belt drive applications but will also work on models that run rear chains. Comes complete with an E.T.C. ball bearing lock-up clutch clutch assembly with Aramid plates and a sealed primary bearing. Note: See 518911 for the Aramid; replacement belt 138t.; 8mm; 41mm wide.

