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 Heim Joint Bushing A great addition to any

A great addition to any toolbox

or create your own from scratch

4204Since 1938

2007-2010 BMW 335i

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 Heim Joint Bushing A great addition to anySpeed 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