4.000" - 4.060" Bore Piston Oil Ring Rail Spacer Support (0.020" Thick) Speedmaster starter shim kits are

Speedmaster starter shim kits are designed to ensure that you have the proper gap between the starter and flywheel

race-bred styling will make bad intentions clear for drag race

Speedmaster harmonic balancers are crafted from high-quality steel and feature a tuned elastomer for optimal engine performance

Speedmaster crankcase evacuation systems are primarily drag race systems designed to reduce pressure buildup in the engine crankcase

These computer-machined brackets are manufactured from high quality materials and come with a chrome finish

4.000" - 4.060" Bore Piston Oil Ring Rail Spacer Support (0.020" Thick) Speedmaster starter shim kits areThese Speedmaster piston oil ring spacers are used in applications where the piston oil ring groove intersects the pinhole. Speedmaster piston oil ring spacers are manufactured from spring steel and install against the bottom sill of the oil ring groove. Available in different bore diameters to suit your specific engine's needs, the Speedmaster piston oil ring spacers will keep your pistons working smoothly throughout the entire operating range.