Manley NexTek Dual Valve Spring - 1.540 in OD (Set of 16) CSR Performance Products Sbc 7" BalancerFAST is the

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Manley NexTek Dual Valve Spring - 1.540 in OD (Set of 16) CSR Performance Products Sbc 7" BalancerFAST is theManley Alcohol Fuel Classes ProMod NexTek Series High Performance Valve Springs Valve Spring Product Description: Valve Spring NexTek Dual Spring 964 lb in Spring Rate 1. 215 in Coil Bind 1. 540 in OD Set of 16 Manley Performance high performance and racing engine parts have been powering winners since 1966! Manley Budget Replacement Valves are better than stock valves. Manley Budget Performance Valves are for the value conscious engine builder.