This is a BRAND NEW set of Wiseco forged aluminum Pistons for a small block Ford engine with Yates C3 NASCAR aluminum racing cylinder heads. These are surplus pistons purchased from Roush Racing. These pistons are designed for use with Yates heads, but there is enough stock to flycut them to use the pistons with other similar heads.

Here are the specs on this set of Pistons:

Cylinder Bore: 4.120"

Compression Height: 1.210"

Pin Size: .912"/2.00” (or 2.018")

Piston type: Lightweight Forged Aluminum

Options: Flycut for High Lift Cams