4 pin design to ensure the hub won’t spin, even with heavily modified S55s. Laser scanned to ensure perfect fitment – direct replacement for stock. Designed and machined in-house on a HAAS 4-axis CNC mill. Machined from heat-treated 4130 Chromoly.
Drill bits are included in the kit.
New crank bolt is required from BMW, not supplied in the kit.
Compatible with all S55 M models