Transmission Mainshaft Bearing Support. Fits Big Twin 4Spd Big Twin 1965-1984 with Rear Chain Drive

Running an open belt drive normally means you lose the mainshaft support provided by the stock aluminum inner primary Here s the solution Our bearing support complete with bearing installed does the job!!

Features & Benefits:-

* Supports the transmission mainshaft when the inner primary is discarded.

* Made from High-strength Cast 356 T6 aluminum.

* Sealed ball bearing.

Tech Tips:-

* Replacement Bearing = Part Number ABR-R16-2RS

* Will NOT work with the Jims Super Nut