High-Cooling Upgrade

The Ferrea Racing Lifter Shim Set is engineered to enhance the valvetrain stability of BMW S63 engines

Designed for engines running our special oversized B58 head studs with ARP insert washers

the Ultra-Lite design significantly reduces rotating and reciprocating mass

paying particular attention to the thread type and length of the bolts

CP Forged Piston Set, BMW S50 Pro-Xtreme Compression Ratio:13:1 High-Cooling Upgrade5150 AutoSport Pro Xtreme Forged Pistons by CP Carrillo for BMW S50 U. S Engines Designed for E36 M3 owners seeking serious performance upgrades, the 5150 AutoSport Pro Xtreme Forged Pistons are built to handle the extreme demands of high horsepower S50 engines. Made by CP Carrillo, these pistons utilize aircraft grade steel, providing exceptional durability and strength for turbocharged, drag racing, or street strip applications. Unmatched