Speed Pro Premium Piston Rings 4.420" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Moly Motor Mount Insert All BMR springs are manufactured

All BMR springs are manufactured from chrome silicon high-tensile spring wire

Facilitate Quick Oil Warm-Up

Each Pump plate has been re-profiled and pocketed to remove unnecessary weight

Big Chief 14 degree Oldsmobile Intake Spring Changer w/ T&D

Speed Pro Premium Piston Rings 4.420" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Moly Motor Mount Insert All BMR springs are manufacturedProduct Description: Piston Rings Performance 4. 420 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