Speed Pro Economy Piston Rings 4.060" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Iron Crankshaft Timing Tape - Threaded Base - 2

- Threaded Base - 2 pc

and heavy duty blades which are raised for use with late model blocks

2-1/4 in Radius

Intake runner vol: 170cc

Speed Pro Economy Piston Rings 4.060" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Iron Crankshaft Timing Tape - Threaded Base - 2Product Description: Piston Rings Economy 4. 060 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