CP Race Pistons BMW S14 95mm 13 to 1 Compression Ratio
We've actually been using this piston specification for years in our racing engines. We use it so often that we actually keep these in stock ready to go when we need them. Typically we run these pistons in EVO 2.5 liter blocks with 95mm OEM bores and oil squirters. With a 308 intake cam we've seen as high as 310 horsewpower from the S14 with 2.5 liter displacement.