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The COMP Cams 3/8" High Energy polylock is specified for moderate lift and spring pressure applications and is made to fit 3/8" stud rockers. As a High Energy option, it balances locking force and fatigue resistance for everyday performance and mildly aggressive valve train setups. Use it with compatible 3/8" studs to maintain secure rocker attachment without overspecifying race-only hardware.
COMP Cams Poly Lock 3/8in High Energy
