Speed-Pro File Fit Plasma Moly Piston Ring Set - 4.000" Bore (+.030") - Top Ring: 5/64", 2nd Ring: 5/64", Oil Ring: 3/16", Oil Tension Ring: Standard Boost Controller 3-5 hour installation time

3-5 hour installation time

Simple setup of features such as the rev limiter with three rotary dials on the face of the unit

The nation's top engine builders rely on Moroso Oil Pumps because of their superior design and ability to provide a smooth and consistent flow of oil at higher engine speeds

Exhaust Connector

Mini Starter

Speed-Pro File Fit Plasma Moly Piston Ring Set - 4.000" Bore (+.030") - Top Ring: 5/64", 2nd Ring: 5/64", Oil Ring: 3/16", Oil Tension Ring: Standard Boost Controller 3-5 hour installation timeSpeed 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