Speed Pro Premium Piston Rings 4.094" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Moly H759C04L 570 exhaust valves these heads

570 exhaust valves these heads move massive amounts of air

1969 Dodge Dart Base CID 273 Naturally Aspirated GAS

1984-1994 Lincoln Continental

2003-2007 Toyota Matrix

1991-1995 Mercury Sable

Speed Pro Premium Piston Rings 4.094" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Moly H759C04L 570 exhaust valves these headsProduct Description: Piston Rings Performance 4. 094 in Bore Drop In 5 64 x 5 64 x 3 16 in Thick Standard Tension Steel Moly 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 can