4.580" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 This manifold will typically produce

This manifold will typically produce more power than any similar competitive manifold due to larger ports and runners

They are manufactured from cast aluminum and are offered with breather holes or without any holes

They're made from quality steel

They're precision-machined from T6-106 billet aluminum

Dress up your oil system with a oil pan from PCE

4.580" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 This manifold will typically produceThese 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.