Speed Pro Premium Piston Rings 4.150" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Moly Harwood Mitered fingers offer a more

Mitered fingers offer a more precise fit again increasing comfort and feel

Perfect for everything from street performance to towing and RV's

Super Duty 99-03

Bolts Included

allowing the most critical data to be viewed at a glance

Speed Pro Premium Piston Rings 4.150" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Moly Harwood Mitered fingers offer a moreProduct Description: Piston Rings Performance 4. 150 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