Speed Pro Premium Piston Rings 3.910" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Moly PD145K Product Features: Spring Guide

Product Features: Spring Guide

Nitrous and boost compatible

Available in two different height configurations and a wide range of flow rates

1/2" NPT x 3/8" hose barb adapters included

Speed Pro Premium Piston Rings 3.910" Bore 5/64 x 5/64 x 3/16" Thick Standard Tension - Moly PD145K Product Features: Spring GuideProduct Description: Piston Rings Performance 3. 910 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