TGK Motorsport Audi D4 A8/S8 Motor Mounts 4.0T
TGK Motorsport Audi D4 A8/S8 Motor Mounts 4.0T
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$349.99
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$349.99
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PREORDER
PREORDER ETA: End of May / Early June
This Product is currently available as a preorder!
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Overview
Factory motor mounts in the 2010-2018 Audi D4 A8 and S8 4.0T platforms fail catastrophically due to hydraulic fluid leaks and rubber deterioration, causing excessive engine movement, drivetrain misalignment, and premature wear of surrounding components. The OEM design's inability to maintain consistent geometry under load compromises both performance and reliability.
TGK Motorsport's precision-machined 6061 aluminum motor mounts eliminate these failure modes entirely while delivering superior engine control. Our serviceable polyurethane bushing system allows customization between street comfort and track performance without replacing the entire mount assembly.
Disclaimer
What is NVH?
NVH stands for Noise, Vibration, and Harshness — the term used to describe how much engine movement, sound, and road feel is transmitted into the cabin of your vehicle. Stock mounts are designed to absorb and isolate these sensations. Aftermarket mounts are built with performance in mind, which changes that balance.
What to expect with aftermarket mounts
Increased vibration in the cabin
You will likely feel more engine vibration through the steering wheel, seats, floor, and gear shifter — especially at idle. This is normal and expected. The stiffer the mount, the more noticeable this becomes.
Improved performance and engine control
The trade-off for increased NVH is a more direct connection between you and the drivetrain. Engine movement is reduced, which can improve throttle response, shift feel, and overall power delivery — especially under hard acceleration.
Is this right for you?
Aftermarket mounts are well-suited for track use, spirited driving, or vehicles that have already been modified for performance. If your vehicle is primarily used for daily commuting and passenger comfort is a priority, a stock or OEM-spec replacement mount may be a better fit. We're happy to help you choose — just reach out before purchasing.
By purchasing and installing aftermarket mounts, you acknowledge that increased NVH is an inherent and expected characteristic of performance components and does not constitute a warranty claim. Installation is at your own discretion. Always consult a qualified technician for proper installation.
Specifications
| Compatible vehicles | 2010-2018 Audi D4 A8/S8 4.0T |
| Material | 6061-T6 Aluminum, Polyurethane Bushings |
| Hardware included | Yes |
| Warranty | Lifetime structural warranty |
Configuration Options
| Street 65A | Track 80A | |
|---|---|---|
| Durometer | 65A Shore | 80A Shore |
| NVH Level | Minimal | Moderate |
| Engine Control | Enhanced | Maximum |
| Best Application | Daily driving | Track/Performance |
| Daily Drivability | ★★★★★ | ★★★☆☆ |
Features & Benefits
✓
Serviceable Bushing SystemReplace bushings without removing the entire mount assembly, reducing maintenance time and cost while extending service life.
✓
6061-T6 Aluminum ConstructionPrecision-machined aluminum provides superior strength-to-weight ratio and eliminates the failure modes of hydraulic OEM mounts.
✓
Interchangeable Bushing OptionsSwap between 65A street and 80A track bushings to optimize performance characteristics without replacing hardware.
✓
Direct OEM ReplacementBolt-in installation using factory mounting points and hardware with no modifications required to your D4 chassis.
✓
Enhanced Engine ControlEliminates wheel hop and drivetrain deflection while maintaining acceptable NVH levels for street use.
✓
Individual Side SelectionReplace only the failed mount or upgrade both sides for maximum performance and balanced engine positioning.
Frequently Asked Questions
Will these motor mounts increase cabin noise and vibration compared to stock?
The 65A street bushings produce minimal NVH increase while providing significantly better engine control than failing OEM mounts. The 80A track bushings will increase vibration but remain acceptable for street use in performance applications.
Can I replace just one motor mount or do I need to replace both sides?
While you can replace individual mounts, we recommend replacing both driver and passenger side mounts simultaneously to ensure balanced engine positioning and prevent accelerated wear on the remaining OEM mount.
How often do the polyurethane bushings need replacement?
Polyurethane bushings typically last 50,000-100,000 miles depending on driving conditions and power levels. The serviceable design allows quick bushing replacement without removing the entire mount assembly.
What tools are required for installation?
Installation requires standard hand tools, a floor jack, and jack stands. The mount is a direct OEM replacement using factory hardware and mounting points with no chassis modifications required.
Which bushing durometer should I choose for my application?
Choose 65A for daily driving with minimal NVH increase and enhanced control. Select 80A for track use, high-power applications, or when maximum engine control is prioritized over comfort.
Ease Of Install
NVH (Noise , Vibration, Harshness)
