Speed Pro Economy Piston Rings 4.040" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Iron H778C01L 510 lb/in Spring Rate

510 lb/in Spring Rate

10 Spline Pinion

Chevrolet Mark-IV

breathable fabrics

Deluxe System

Speed Pro Economy Piston Rings 4.040" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Iron H778C01L 510 lb/in Spring RateProduct Description: Piston Rings Economy 4. 040 in Bore Drop In 5 64 x 5 64 x 3 16 in Thick Standard Tension Cast Iron Phosphate 8 Cylinder From pistons to engine bearing components, Speed Pro offers an array of performance engine parts. You can rely on Speed Pro for industry leading performance engine technologies, from cutting edge Digital Diamond Profiled pistons to A Series bearings. They are engine components performance enthusiasts and racers