Higher pressure spring for the APR R1 DV.

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MANLEY Valve Lock, 10 Degree Machined, Bead Loc, Steel, -.050 .3110 in. Stem, Each

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I.D. Spring Seat 1.550 OD x .730 OD x .570 (Fits 8002, 8016 for SBC/SBF), Set of 16

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MANLEY Valve Spring, NexTek, Drag Race, 1.620 in. OD, 500 lbs./in. Rate, 1.200 in. Coil Bind Height, Dual, Polished, Set of 16

MANLEY Valve Spring, NexTek, Drag Race, 1.620 in. OD, 500 lbs./in. Rate, 1.200 in. Coil Bind Height, Dual, Polished, Set of 16

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MANLEY Valve Spring, NexTek, Drag Race, 1.580 in. OD, 535 lbs./in. Rate, 1.170 in. Coil Bind Height, Dual, Polished, Set of 16

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MANLEY Valve Spring Retainer, Steel, 10 Degree, 1.437-1.550, Set of 16

MANLEY Valve Spring Retainer, Steel, 10 Degree, 1.437-1.550, Set of 16

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