4.125" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 They're available in several sizes

They're available in several sizes to fit your valve covers

These zinc plated cooling pans from Speedmaster give you up to 15 percent cooler transmission temperatures

Speedmaster rock-solid race shifting automatic shifters can give your street ride the feel of having a full-on race stick in your hand

Some applications feature a thicker deck to solve common warping or cracking issues

The Speedmaster forward drum and direct drum assembly are designed to withstand high horsepower with their upgraded 36 element sprag design

4.125" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 They're available in several sizesThese 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.