3in. Open Primary Belt Drive Kit. Fits Big Twin 1970-1978 with Ratchet Lid Transmission.

Features & Benefits:-

* Works with OEM 1970-78 4 speed ratchet lid transmissions & aftermarket 5-in-4 speed transmissions.

Tech Tips:-

* Will NOT work with 1979-84 OEM 4 speed plate top transmissions.

* Will NOT work with aftermarket 4 speed transmissions.

* Requires 1990-2006 style starter motor #ABR-80-1001

* Requires BCM-7072, JGI-12014 and BDL-CDAS-200.

* Some modification may be necessary to install.