4.530" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 making it the ultimate choice

making it the ultimate choice for racers who demand reliability and precision

These Speedmaster aluminum crankshaft pulleys help to increase horsepower by reducing accessory drag

Ideal for high-performance street and race setups

Speedmaster billet main caps are precision CNC-machined from superior-quality 1025 billet steel

they don't require any special tools for installation

4.530" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 making it the ultimate choiceThese 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.