Please note that these 135 mm connecting rods are designed to fit M20 135mm Rod engines

- Standard clearance (+0

Step 3: Tighten to 75 ft-lbs

and Alpina B3 Bi-Turbo

F30 / F31 / F34 330i xDrive

BMW S63 Forged Piston Set, Pro-Xtreme, Alusil X1 20iX Please note that these 135These pistons are suitable for use in engine blocks with factory alusil bores, no sleeving is required. Recommended piston to wall clearance is ~0. 0025 0. 0035 in 5150 AutoSport Pro Xtreme Forged Pistons for BMW S63 Engines Upgrade your BMW S63 enginefound in the F90 M5, F91 F92 M8, and X5M X6M modelswith 5150 AutoSports Pro Xtreme Forged Pistons, made in collaboration with CP Carrillo. These pistons are built to handle extreme horsepower, intense