VTT S55 “Spline Lock” Crank Hub
The delivery time for products in stock is 1-3 business days.
If the product is not in stock and it is a pre order product, the average delivery time is 5-21 business days. If the product has a longer delivery time than previously announced, we will be in touch.
Terms for product returns:
- You must return the ordered products within 14 days of receiving
- The products must be unused and without damages
- Commission fee for handling returns is 21,90€
- For product returns, the customer is in charge of the return costs. Only door to door service (Express)
- Shipping costs are not refunded
For international orders (outside of Europe) sales are final and non-refundable. Once an order is placed, it cannot be canceled or returned. By placing an order, you acknowledge and agree to these terms.
Return address: QT Parts, Vasarakatu 8B, 37150 Nokia, Finland.
Pre order / made-to-order products
If the product you have ordered is a pre order or made-to-order item, it is not subject to the 14-day right of withdrawal or return under consumer protection laws, as the product is manufactured or sourced specifically based on the customer’s individual order.
If you wish to cancel your order before receiving the product, we will refund 50% of the total order amount.
This condition applies to the following product categories:
- Suspension
- Engine Tuning
- Engine Parts
- Exhaust Systems
- Fueling
- Turbochargers/superchargers
- Drivetrain
- ECE-approved Downpipes
All of the above products are manufactured or sourced individually based on the customer’s order, and therefore cannot be returned after delivery, unless the product has a manufacturing or material defect.
In the event of such a defect, the standard liability for defects as provided by consumer protection legislation shall apply.
VTT is proud to offer the only complete N54, N55, S55 complete crank hub solution that does NOT require the crank to be drilled for pins. Our hub uses our proprietary “Spline Lock” 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 our 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 “Spline Lock” 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
VTT “Spline Lock” Crank hubs are CNC manufactured from 440C tool Steel with a Rockwell rating of HRC60 for the ultimate in durability, and toughness.
We offer the hubs in 2 ways.
- Crank Hub Only
- Crank Hub Plus OEM bolt, OEM Oil pump sprocket, OEM oil sprocket retainer, and VTT Crank bolt capture
We suggest 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.
DISCLAIMER: The no-slip guarantee is ONLY in place when installed by a CERTIFIED VTT Install center. Outside of that VTT is not responsible for any engine damage caused by improper installation, or misuse of the crank hub solution. The product comes with no warranty as it is intended as a race part only. Our install guide is meant to assist a skilled technician when installing this part. Procedures differ from the factory and should be followed according to the guide. We cannot warranty the OEM parts sold with these kits, if an issue is found we can speak with BMW about a replacement.