The 034Motorsport Billet Spherical Dogbone Mount Performance Pack without Dogbone Pucks for the Audi 8V.5 RS3 and 8S TTRS includes all of the 034Motorsport performance products associated with the dogbone mount in one comprehensive and convenient package. Included with this kit are the Billet Spherical Dogbone Mount, Upper Dogbone Mount Insert, Lower Dogbone Mount Insert, and all new hardware.
 

The 034Motorsport Billet Spherical Dogbone Mount is the new standard in performance and durability. This dogbone mount was engineered with performance in mind, manufactured from billet aluminum and stainless steel, and features a genuine Aurora Spherical Bearing to maintain proper articulation and reduce NVH transfer. The Billet Spherical Dogbone Mount is machined and assembled in-house, designed to eliminate the slop associated with the factory mount, and will better withstand the forces generated by hard launches.

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 the cabin.

Billet Spherical Dogbone Mount Features:

• Bolt-In Performance Upgrade for Factory Dogbone Mount
• Reduced Drivetrain Slop & Engine Movement Under Load
• More Direct Power Transfer & Improved Shifting Feel
• Increased Strength & Improved Durability vs. Factory Part
• T6-6061 Billet Aluminum Body
• 303 Stainless Steel Spacers
• Genuine Aurora Spherical Bearing Featuring Self-Lubricating Teflon Race Lining
• Rebuildable Design
• New Factory Stretch Bolts Included

The 034Motorsport MQB Upper Dogbone Mount Insert (patent pending) is required for any MQB platform MkVII VW Golf/GTI/R, MkVII VW GLI, 8V/8V.5 Audi A3/S3/RS3 & MkIII Audi TT/TTS/TTRS using an aftermarket dogbone mount and dogbone mount insert. Aggressive driving that causes violent drivetrain movement, such as burn-outs that induce wheel-hop, will cause the upper and lower dogbone mounts to exert a bending moment on the dogbone mount arm, causing it to bend, and in some cases fail. When this failure occurs, the bottom of the engine is unconstrained and the engine will cause damage to other components in the engine bay. The 034Motorsport MQB Upper Dogbone Mount Insert eliminates these bending forces, allowing the dogbone mount to perform as designed during these violent events.

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

The lower dogbone mount insert limits compliance of the lower dogbone mount puck by filling large voids in the puck. 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 lower puck motion is limited by the dogbone insert, but the upper puck in unconstrained and is 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 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 have high confidence that other brands of spherical dogbone mounts will have similar failures.

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, which is 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.