VTT - S55 Splinelock Crank Hub Solution - BMW F8X M2C/M3/M4 ^Sale

VTT is proud to offer the only complete S55 complete crank hub solution that does NOT require the crank to be drilled for pins. Our hub uses our proprietary “Splinelock” technology that uses high tolerance machined splines that press into the crank, and positively lock the hub to the crank. We spent many months testing, and retesting this design, utilizing well over 10 different samples to come to our final production version. During testing, our final hub managed to break our testing rig before slipping. These have been bench-tested, and real-world testing on the VTT N54 race car spinning 8K RPM and making well over 900WHP. This technology means VTT's hub installs the same as a stock hub, with no drilling of the crank, which means MUCH less labor is involved and is reversible is ever wanting to be uninstalled leaving no holes in the crank.

The “Splinelock” is only available with the VTT Crank bolt capture for the ULTIMATE Crank Hub solution for your BMW. These parts are designed to be used together, and the spline lock should not run without the CBC. The optional install kit consists of necessary dust covers, gaskets and seals so everything is prepared in advance for installation.

VTT “Splinelock” Crank hubs are CNC manufactured from 440C tool Steel with a Rockwell rating of HRC60 for the ultimate in durability, and toughness.

Optional Install Kit consists of Front Crank Seal, replacement Access Caps and various gaskets needed for installation. 

Note: We suggests the Crank Hub System only be installed by a qualified shop or technician. Timing tools are 100% REQUIRED if installed improperly engine damage may occur. VTT's no-slip guarantee is only in place when installed by a certified VTT Install center (such as EAS). CBC is designed to be used with factory crank bolt only and will not work with 3rd party/aftermarket bolts.

Vehicles Supported
BMW F8X M2 Competition
BMW F8X M3/M4, including Competiton