Rocker Shaft Shims / '17-'25 Milwaukee-Eight

Hardened shims that tighten rocker arm end play and quiet the top end. Excess rocker arm to cylinder head end play makes a Harley-Davidson Milwaukee-Eight noisier than it needs to be. These shims close that clearance up. Feuling also notes that M8 cylinder heads see excessive wear on the rocker arm standoff thrusting surfaces, and a hardened shim placed on that surface addresses it. Buy a single thickness if you know what you need, or the assortment if you are measuring as you go. Tightens rocker arm to cylinder head end play clearance Hardened shim protects the rocker arm standoff thrusting surface Feuling recommends an ideal side clearance of 0.0035 to 0.005 inch for optimum rocker arm oil pressure and noise reduction Made in the U.S.A. Fitment '17-'25 Milwaukee-Eight Important: Feuling states these should be installed by a professional, one who can take correct end play measurements and can install and tighten rocker shaft hardware properly.