Speed-Pro Standard Gap Plasma Moly Piston Ring Set - 4.250" Bore (+.030") - Top Ring: 1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Oil Tension Ring: Standard YA0859 Global West Subframe Connectors

Global West Subframe Connectors

Single Plane with Isolated Plenum

These machined installation hubs are CNC machined from 6061 billet aluminum

Adjustable by pass pressure using optional springs

Excelling when used in extreme duty

Speed-Pro Standard Gap Plasma Moly Piston Ring Set - 4.250" Bore (+.030") - Top Ring: 1/16", 2nd Ring: 1/16", Oil Ring: 3/16", Oil Tension Ring: Standard YA0859 Global West Subframe ConnectorsSpeed 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