Speed Pro Economy Piston Rings 4.020" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Iron Exhaust Wrap consistent and have a long

consistent and have a long life because they are made with the highest quality materials

Outlaw bearing

The DUI is test fired before leaving our facility to insure all components are working properly

8 bolt rear flange and center counterweighted

Best w/ aftermarket heads

Speed Pro Economy Piston Rings 4.020" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Iron Exhaust Wrap consistent and have a longProduct Description: Piston Rings Economy 4. 020 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