CP Forged Pistons SC7701 5461 and S38B38 found in the

and S38B38 found in the E24

BMW S50B30 Euro Stroker Kit by 5150 AutoSport

The rotor used is the E46 M3 328x20mm rear rotor

That's why we trust ARP

E93 M3 from 2008-2013

CP Forged Pistons SC7701 5461 and S38B38 found in theCP Carrillo Forged Piston Set, Part Number: SC7701 Bore 84. 5 mm Stroke 89. 6 mm Rod 144. 34 mm N20 Compression Ratio 10: 1 N55 Compression Ratio 11: 1 S55 Compression Ratio 10. 2: 1 Pin 22 mm Rings CPT 3327PVD Compression Height 32. 4 mm CP Carrillo represents the highest quality pistons on the market, engineered for maximum power and durability. Utilizing high strength, lightweight materials and advanced engineering, this BMW N20 N55 S55 piston set