4.530" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 Speedmaster wing nuts are 5

Speedmaster wing nuts are 5 in

and feature low-resistance terminals to maximize conductivity

Using only three parts--a laser-welded sealed housing

These Speedmaster main bearings are just what you need to freshen up your engine

4.530" Bore Piston Oil Ring Rail Spacer Support (0.030" Thick) Set of 8 Speedmaster wing nuts are 5These 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.