ARP Main Stud Kit, BMW S58

This ARP Main Stud Kit is designed to replace BMW part number 11118604584 for the BMW S58 engines found in high-performance models such as G80/G81/G82/G83 M3/M4, X3M F97, and X4M F98.

Upgrading from factory main bolts to ARP Main Studs is a simple, yet greatly beneficial upgrade.

ARP Main Studs offer the following benefits: - Uniform Clamping Force: ARP Main Studs provide a uniform clamping force that OEM bolts cannot.

With the improved distribution of pressure across main bearing caps comes better, more precise crank alignment for stability and longevity.

- Improved Block Stability and Rigidity: ARP Main Studs improve block rigidity and therefore stability.

This ensures maximum power transfer from the crank to the drivetrain, which in turn ensures: - Improved Throttle Response - Greater Horsepower - Higher Torque Output - Prevent Main Cap Walk: This occurs as main caps shift and move out of position, which can cause crank and engine damage - Reduced Risk of Fastener Stretching: Under high RPM applications and high loads, factory main bolts are prone to stretching and deforming.