Manley Professional valve springs are constructed from silicon material for oval track racing, or H-11 tool steel for drag racing. No matter what kind of racing you do, Manley has got you covered!

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COMP Cams Valve Spring, Single, 1.354 in. O.D, 380 lbs./in. Rate, 1.280 in. Coil Bind Height, Each

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Trick Flow Valve Spring Shims, Steel, Hardened, 1.460 in. Outside Diameter, .060 in. Thick, Set of 4

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