Speed-Pro Standard Gap Plasma Moly Piston Ring Set - 4.000" Bore (+.060") - Top Ring: 1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Oil Tension Ring: Standard 630-16 then we design application specific

then we design application specific products using a “zero compromise” approach that delivers a measurable performance advantage

& TH400 (Reverse Pattern)

1997-2002 Ferrari 550 Maranello

Can also be used in street-performance applications

Speed-Pro Standard Gap Plasma Moly Piston Ring Set - 4.000" Bore (+.060") - Top Ring: 1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Oil Tension Ring: Standard 630-16 then we design application specificSpeed Pro designs and engineers pistons to meet the most demanding street performance and racing conditions. In combination, we draw upon more than 100 years of Speed Pro engine mastery to enhance the piston ring and its seal. Our Speed Pro(R) brand is recognized for being a winner in every form of racing, and is the proven horsepower leader in oval track and drag racing. Hell Fire(R) Rings: Speed Pro Hell Fire rings, manufactured from a specially