Description
BMW S65 Forged Piston Set, CP Carrillo Compression Ratio:11.5:1 it provides excellent tuning flexibility Bore Size Thickness:87.5 mm 0.089" RAD 20 0519 B48 Cylinder Head Valve lock keepers it provides excellent tuning flexibility without requiring an upgrade to higher tier ECUs For those pushing their M20 engines on the track or in rally stages