TGK Motorsport Billet Transmission Mount - B9 S4/RS4/S5/RS5/SQ5
TGK Motorsport Billet Transmission Mount - B9 S4/RS4/S5/RS5/SQ5
Regular price
$349.99
Sale price
$349.99
Regular price
Unit price
per
Shipping calculated at checkout.
Couldn't load pickup availability
- Fully secure checkout
- Trusted by thousands
- Rated and reviewed
PREORDER
PREORDER ETA: ~Early/Middle of Novemer
This Product is currently available as a preorder!
Orders placed will hold spot in queue!
Documentation
Question about this product?
We're happy to help.
Pre-order
Overview
The factory transmission mount on the 2018–2026 Audi B9 S4, RS4, S5,RS5 and SQ5 relies on a soft rubber bushing designed for comfort — not performance. Under the torque demands of the 2.9T V6 and 3.0T V6 drivetrain, that rubber fatigues rapidly, allowing excessive drivetrain movement, imprecise gear engagement, and the characteristic clunking and surging that plague B9 platform owners running aggressive tunes or spirited driving. Once the OEM bushing tears or collapses, powertrain flex skyrockets and shift quality degrades noticeably.
The TGK Motorsport Billet Transmission Mount eliminates these failure points entirely. Machined from 6061-T6 billet aluminum and fitted with your choice of polyurethane bushing durometer, this is a direct OEM replacement that bolts into your B9 S4, RS4, S5, RS5 and SQ5 with zero modification — restoring drivetrain rigidity, sharpening throttle response, and lasting the life of the vehicle.
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 improves throttle response, shift feel, and power delivery under hard acceleration.
Is this right for you?
Aftermarket mounts are well-suited for track use, spirited driving, or vehicles already modified for performance. If your vehicle is primarily used for daily commuting and passenger comfort is a priority, a stock or OEM-spec replacement may be a better fit. We're happy to help — 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 | 2018–2026 Audi B9 S4, RS4, S5, RS5, SQ5 |
| Material | 6061-T6 Billet Aluminum Housing, Polyurethane Bushings |
| Available durometers | 65A Street, 80A Track |
| Installation | Direct OEM replacement — no modification required |
| Hardware included | Yes |
| Warranty | Lifetime structural warranty |
Durometer Comparison
| Street 65A | Track 80A | |
|---|---|---|
| Durometer | 65A | 80A |
| NVH / Cabin Noise | Low - Moderate | Moderate - High |
| Drivetrain Rigidity | High — significant over OEM | Maximum — zero compliance |
| Shift Feel | Noticeably sharper than stock | Precise, mechanical, direct |
| Best for | Daily driver / tuned street use | Track days / race prep |
Features & Benefits
✓
6061-T6 Billet HousingMachined from aerospace-grade 6061-T6 aluminum for a strength-to-weight ratio that outlasts any OEM rubber-and-steel assembly — period.
✓
Selectable DurometerChoose 65A polyurethane for a street-optimized balance of rigidity and NVH, or step up to 80A for uncompromising track-day stiffness — the same billet housing, tuned to your use case.
✓
Direct OEM ReplacementEngineered to the exact OEM mounting dimensions of the B9 S4, RS4, S5, and RS5 chassis — no drilling, no adapters, no fabrication. Swap-in ready with included hardware.
✓
Eliminates Torn BushingsPolyurethane resists heat, oil, and the sustained torsional stress of the 2.9T and 3.0T drivetrains — it will not tear, collapse, or deform the way factory rubber does under load.
✓
Sharper Throttle ResponseEliminating drivetrain flex translates directly into crisper throttle-to-wheel response and more connected, confidence-inspiring gear engagement on every upshift and downshift.
✓
Lifetime Structural WarrantyEvery TGK Motorsport billet mount carries a lifetime structural warranty — because a part machined from solid 6061 billet should never be the weak link in your drivetrain.
Frequently Asked Questions
Which durometer should I choose for my B9 S4 or S5 that I drive daily but also tune?
The Street 65A is the right call for a tuned daily driver. It delivers a substantial increase in drivetrain rigidity over the factory rubber mount — enough to eliminate bushing flex under the 2.9T or 3.0T's full torque output — while keeping NVH levels close to OEM and remaining comfortable for commuting. Step up to the Track 80A only if the car primarily sees track days or you're chasing maximum mechanical precision at the expense of some added drivetrain noise at idle and low speeds.
Will this mount fit both the 2.9T B9 RS4/RS5 and the 3.0T S4/S5?
Yes. The TGK Motorsport Billet Transmission Mount is engineered to the shared B9 platform mounting geometry and fits all 2018–2026 Audi S4, RS4, S5,RS5, and SQ5 models — with no modification required.
How do I know if my factory transmission mount needs to be replaced?
Common symptoms of a failed or failing OEM transmission mount on B9 platform Audis include: a noticeable clunk or thud when engaging Drive or Reverse, drivetrain surging under hard acceleration, excessive vibration through the chassis, and visible cracking or tearing of the rubber bushing on inspection. If you're experiencing any of these, your OEM mount has likely collapsed or torn and should be replaced immediately to prevent additional drivetrain stress.
Does the TGK billet mount include all necessary installation hardware?
Yes — all required mounting hardware is included in the kit. The mount is a direct OEM replacement, so installation follows the factory procedure with no additional parts needed. Most experienced DIYers complete the swap in under two hours with basic hand tools and a lift or jack stands.
How does the TGK Motorsport mount compare to other billet mounts on the market for the B9 platform?
Unlike some competitors who offer a single fixed-durometer insert, the TGK Motorsport Billet Transmission Mount gives B9 owners a genuine choice between two purpose-engineered durometers — 65A for street and 80A for track — in a single billet 6061-T6 housing backed by a lifetime structural warranty. The result is a mount built specifically around how you use your Audi, not a one-size-fits-all compromise. Combined with a direct-fit OEM replacement design and fully included hardware, it's the most complete solution available for the B9 S4, RS4, S5, RS5, and SQ5.
