BILLET ALUMINUM SPHERICAL DOGBONE MOUNT

The result is a locked-down drivetrain, crisper shifting, and virtually no wheel hop. The Motorsport Dogbone Mount will cause some increase in noise, vibration, and harshness (NVH) inside of the cabin.

BILLET ALUMINUM LOWER DOGBONE MOUNT INSERT

This precision-machined billet aluminum insert is designed to fill the large voids in the factory dogbone mount and limit transmission and engine movement without sacrificing ride quality or introducing any perceivable additional noise, vibration, or harshness into the cabin. By filling the void in the factory mount, this insert eliminates the associated slop and ensures that you're experiencing crisper shifts and a more direct, connected driving experience.

Engineered to work in unison with the factory rubber mount, this insert was designed using CAD software and thoroughly tested and refined to provide noticeable slop reduction without introducing excessive noise or vibration into the cabin, common with lesser designs. Unlike polyurethane insert options on the market, this billet aluminum part will not pack and wear over time and guarantees long-lasting performance.

SELECT THE CORRECT VERSION: Some Mk7 GTI & Golf R models have a different factory dogbone mount. To ensure fitment on your vehicle, please visually verify the mount you have using the picture above, then select the correct insert.

BILLET ALUMINUM UPPER DOGBONE MOUNT INSERT

An aftermarket billet spherical dogbone mount combined with a dogbone mount insert dramatically improves the drivetrain's feel and responsiveness during spirited driving. However, this combination of modifications and the MQB dogbone mount pucks' design constraints has revealed a scenario that applies forces to the dogbone mount arm it was not designed for.

The lower dogbone mount insert limits the lower dogbone mount puck by filling large voids. During normal and spirited driving, this reduction in compliance results in a more direct transitional response of the drivetrain to accelerative and decelerative forces. The driver feels a more direct throttle response through the drivetrain without introducing a significant amount of NVH.

However, violent drivetrain shocks, such as burn-out-induced wheel-hop, introduce additional forces that can cause damage to the billet spherical dogbone mount arm. In these violent events, the dogbone insert limits the lower puck motion, but the upper puck is unconstrained and free to move forward.

This means that the entire puck assembly rotates forward at an angle toward the front of the car. Because the dogbone mount arm is clamped into the puck assembly, the rotation of the puck assembly generates a bending moment applied to the dogbone mount arm that it was not designed for.

Our testing has shown that regardless of the arm design and the material used, the arm cannot be made strong enough to withstand this bending moment. We tested arms manufactured using 6061 aluminum, 7075 aluminum, and stainless steel. The results were all very similar. The dogbone mount arm showed signs of bending with just two burn-out-induced wheel-hop events. Complete failure of the dogbone arm occurred in as few as four wheel-hop events. We are confident that other brands' spherical dogbone mounts will have similar failures.