G02 X4 M40i

USB tuning port for seamless adjustments

- Improved performance

Available in matched and balanced sets of 8

Multiple ignition tables with 6D ignition mapping

ARP Head Stud Kit, BMW M50 M52 S50 S52 11mm Oversized 4048 G02 X4 M40iThis 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. However, it's a MUST to have the block drilled and tapped professionally prior to installation. These head studs are a great choice for increasing boost levels without the cylinder head lifting. While both the 11mm L19 and 10mm Custom Age 625+ head studs are high