4.290" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 Speedmaster piston rings are designed

Speedmaster piston rings are designed to stand up to the rigor of racing and high-performance street use while providing a long-lasting life

Speedmaster manufactures these master cylinders from quality materials to ensure proper fitment

Spacer can be reused if disassembly of the carrier is required

These retainers are available in a variety of lock angles and sizes to suit your needs

These Speedmaster expansion tanks are perfect for cars with low-mount radiators to provide a convenient filling location and to bleed off unwanted air

4.290" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 Speedmaster piston rings are designedThese 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.