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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Manley Valve Stem Cap, 5/16" Stem, .3110 +.005 Oversize, Set of 8

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MANLEY Valve Spring Retainer, 10 Degree, H-13, 1.340 in. OD, Double, Each

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Trick Flow Valve Springs, Single, 1.500 in. Diameter, 375 lbs./in, 7 Degree Locks, Kit

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