Pinion Gear - Black. Fits Big Twin 1977-1989 - Jims

Use tool # JM-1110 to order the correct pinion gear.

Black = Pinion Gear Size 1.4710 - 1.4715

* Replaces OEM # 24046-78

* Suggested Additional Purchase # SS33-4244 Pinion Gear Nut

Tech Tips:

Choosing the right size pinion gear to match the cam gear is very important for a quiet, long running engine. If too much gear lash is present, you will hear a clicking noise (sounding like bad lifters), which is the cam gear falling back on the pinion gear as one valve opens and another closes.