4.580" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 These Speedmaster main bearings are

These Speedmaster main bearings are just what you need to freshen up your engine

that's 50 percent less backlash than other competitive cables on the market

Get up to four degrees of timing adjustment with Speedmaster adjustable timing pointers

The belts use a fiberglass cord wound across the entire width of the belts to minimize stretching

4.580" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 These Speedmaster main bearings 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.