4.290" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 When it's time for valves

When it's time for valves

turbocharged and nitrous applications

Perfect for professional racing setups

Dual distributor holddowns

4.290" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 When it's time for valvesThese 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.