the Pro-Xtreme Connecting Rods provide peace of mind for engine builders and enthusiasts pushing the limits of their M54 engines

sharper throttle response

milder profiles enhance everyday driving with smooth power delivery

SuperTech valves ensures optimal power output and improved engine efficiency

creating a chemical bond via Cometic's proprietary coatings

ARP Head Stud Kit, BMW S50B30/S50B32 EURO hpvk the Pro-Xtreme Connecting Rods providePlease Note: CA 625+ Head Studs are currently out of stock, 6 8 week lead time. This custom ARP head stud kit is designed specifically for the European BMW S50B30 Single VANOS and S50B32 Dual VANOS inline 6 cylinder engines, which are commonly found in the following applications: 1995 1999 E36 M3 (excluding Canada and the United States) 1996 2000 Z3 M Coupe and M Roadster (excluding Canada and the United States) Installing ARP head studs on an S50B30