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FEULING PARTS Rocker Shaft Shims for Gorilla (M8) FEULING PARTS Rocker Shaft Shims help fine-tune rocker arm end play clearance to reduce mechanical noise and improve valvetrain quietness. Ideal for street riding setups and designed to support long-term cylinder head performance. Why you’ll love them: Quiet your engine by tightening rocker arm to cylinder head end play clearance. Feuling recommends an ideal 0.0035”–0.005” side clearance for optimum rocker arm oil psi and noise reduction. For M8 cylinder heads , the shims help address excessive wear on rocker arm standoff thrust surfaces—placing the hardened shim on the thrusting side can reduce further wear and damage. Made in the USA . Designed for professional installation with correct end play measurements and careful tightening of rocker shaft nuts/bolts to avoid shim damage. Sizes included: 0.003” / 0.005” / 0.010” Model: Gorilla Type: Rocker Shaft Shim Riding Style: Street Units: 3 Packs of 6 Weight: 0.07 lbs | Dimensions: 7.13" x 4.84" x 0.35"
Quiet your engine by tightening the rocker arm to cylinder head end play clearance
Feuling recommends an ideal side clearance of 0.0035” - 0.005” for optimum rocker arm oil psi and noise reduction
M8 cylinder heads also have excessive wear on the rocker arm standoff trusting surfaces, when the hardened shim is placed on the thrusting side it will assist in reduction with further wear and damage to cylinder head
Made in the USA
These shims should be installed by a professional, one who can make correct end play measurements and can install and tighten rocker shaft nuts/bolts without damaging shims.