- Machined 32mm Hex for Ease

This ARP oversized 11mm head stud kit is designed to replace the 10mm head studs in M50/M52/S50/S52 engines for those who want to push the limits of their high horsepower turbo engines

Due to the specialized tools needed

causing factory bolts to stretch and fail

With the ability to reach 9500 RPM

5150 AutoSport High Performance Main Bearing Set, BMW M50 M52 S50 S52 127-4000 - Machined 32mm Hex for5150 AutoSport's High Performance Main Bearing Sets for BMW M50, M52, S50, and S52 engines are engineered to withstand extreme performance conditions. Featuring Calico coated surfaces, these bearings reduce friction, enabling your engine to generate more power and resist the risk of bearing spin under high stress. The advanced thermal resistant properties make them ideal for forced induction setups and racing applications, ensuring reliability even