Speed Pro Economy Piston Rings 4.155" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Iron Neck Roll and are designed for an

and are designed for an exact port match with Dougs headers

Note: this product is legal only for off-highway use (except in California or states that have adopted California emission standards)

Easy installation with a set screw

1975-1980 Plymouth PB100

Speed Pro Economy Piston Rings 4.155" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Iron Neck Roll and are designed for anProduct Description: Piston Rings Economy 4. 155 in Bore Drop In 5 64 x 5 64 x 3 16 in Thick Standard Tension Cast Iron Natural 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