4.125" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 They also feature pre-assembled ends

They also feature pre-assembled ends that are factory-crimped to eliminate leakage

Speedmaster Transformer Ignition coils are Epoxy filled eliminating internal vibration

Speedmaster pushrod length checking tools are precision crafted from steel alloy for years of accurate measurements

High voltage arcing is minimized through screw on connectors and a high tension tower

4.125" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 They also feature pre-assembled endsThese 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.