Pinion Gear Nut. Fits Big Twin 1954-1989.

Features & Benefits:-

* 5/8-24 UNEF-3B LH x .375"

* Black Steel - 4140

* Replaces OEM # 24023-54

Proudly Made in the USA by S&S Cycle !

Tech Tips:

* Use this tool for an easy install # JM-94555-55A