Vargas "Spline Lock" Crank Hub Solution - BMW N55 & S55

Product Details

Engineered for the BMW enthusiast who demands maximum security without compromising the structural integrity of the crankshaft, the VTT Spline Lock Crank Hub Solution represents a massive leap in drivetrain engineering. By moving away from friction-based or pinned interfaces, VTT has created a hub that forms a high-interference mechanical bond with the crank snout. This specific "Complete Package w/o Crank Bolt Capture" is designed for owners who want a comprehensive hardware refresh, including a new factory stretch bolt and oil pump components, but do not require the external bolt capture plate. Manufactured from ultra-hardened tool steel, this hub eliminates the risk of catastrophic valve-to-piston contact caused by timing slips, providing peace of mind for both daily drivers and competitive racers.

Key Features

• Precision Tolerance Machining: CNC-cut splines designed for a perfect interference fit with the BMW crankshaft.

• High-Strength Tool Steel: Built to withstand the immense shearing forces found in tuned S55 and N55 platforms.

• Comprehensive Hardware Kit: Includes all necessary OEM-grade replacement sprockets and retainers for a "while you're in there" refresh.

• Reduced Engine Down-Time: Eliminates the specialized machining steps required for pin-style hubs, allowing for a faster turnaround at the shop.

• Optimized for High RPM: Designed to maintain timing accuracy during aggressive downshifts and high-revving maneuvers.

Specifications

• Component Material: Hardened 440C Stainless Steel / Tool Steel.

• Compatibility: Fits F80 M3, F82/F83 M4, F87 M2/M2C, and various N55-equipped E and F series BMWs.

• Manufacturing Process: 5-Axis CNC Machined.

• Torque Requirement: Requires factory-spec 100 Nm + 270° (using the included OEM stretch bolt).

• Package Contents: VTT Spline Lock Hub, Genuine BMW Crank Hub Bolt, Genuine BMW Oil Pump Sprocket, Genuine BMW Oil Sprocket Retainer.

• Installation Requirement: Professional installation and BMW-specific timing tools are 100% required.

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