Manley GM LS Series .660in Max Lift Valve Spring and Retainer Kit

Manley Performance is a leading manufacturer of high-performance engine components, specializing in valve train parts, pistons, rods, and crankshafts. Known for their precision engineering and use of high-quality materials, Manley products are designed to handle extreme power and performance demands in racing and motorsport applications. Trusted by enthusiasts and professionals worldwide, Manley continues to provide innovative solutions for building high-revving, durable engines that push the limits of performance.