4.000" - 4.060" Bore Piston Oil Ring Rail Spacer Support (0.020" Thick) This crank support system is

This crank support system is a must have for all small block chevy racers with a supercharger

These chrome water necks from Speedmaster add a touch of class to your cooling system

these replacement mounting cap assemblies from Speedmaster will get your project back on the road

If you're completing the installation of a Speedmaster electric water pump

Fits big block Chevy rectangular port cylinder heads on standard deck blocks

4.000" - 4.060" Bore Piston Oil Ring Rail Spacer Support (0.020" Thick) This crank support system isThese 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.