Speed Pro Premium Piston Rings 4.350" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Moly 41009010 to ultra-quick

to ultra-quick

heat-treated steel nuts are plated for durability and will keep rocker arms positively locked to maintain precise valve train adjustments

Mercury: Monterey 66 - 70 7 L Engine

Stainless Steel Mounting Hardware

Speed Pro Premium Piston Rings 4.350" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Moly 41009010 to ultra-quickProduct Description: Piston Rings Performance 4. 350 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