Rocker Arm Shaft Set. Fits Milwaukee-Eight 2017up.

Features & Benefits:-

* Designed with strength in mind, with over double the strength of the factory & or our competitors shafts. Precision ground from 4140HT steel, gas nitrited & final surface treated.

* Custom tooling was created to provide a countersink relief for the bolt/nut head verses machining away the entire end of the shaft per the factory design.

* Recommended for all M-Eight engines & especially for engines running higher lift camshafts & heavier valvespring pressu res.

* Replaces OEM # 17300059

* Made in the U.S.A.

MFR PART No: 1231

ROLLIES PART No: FE-1231