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Transmission Mount Insert - Billet Aluminum (JHM) for Audi B9 A4-S4-A5-S5-RS5-Q5-SQ5, C8 RS6-RS7, D5 S8 and 4M SQ7-SQ8

SKU: JHM-8W0399156BH


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JH Motorsports is proud to introduce our new B9, C8, D5 and 4M Billet Transmission Mount Insert!



Unleash the full potential of your vehicle's enhanced performance with our JHM Billet Transmission Insert. The factory transmission mounts leave empty spaces in the rubber, causing unwanted drivetrain movement and slop that can be felt during shifts, acceleration, and deceleration. Our precision CNC'd Billet Aluminum insert, with its sleek black anodizing, is the perfect solution to reduce this unwanted movement and enhance your driving experience.

Installing our Billet Transmission Insert is a breeze, making it easy and simple for anyone to install. Enjoy a smoother ride with little to zero NVH and feel confident knowing that our product is proudly MADE IN THE USA!


  • Meticulously crafted with Precision CNC'd Billet Aluminum for uncompromising quality and exceptional durability
  • Sleek Black Anodizing for an eye-catching, high-end appearance
  • Eliminates Unsightly Drivetrain Movement and Slop for a smoother, more refined driving experience
  • Effortless, Easy/Simple Installation that requires minimal time and effort
  • Elevates your Driving Experience to a whole new level with enhanced performance and responsiveness
  • Virtually Silent Operation with little to zero NVH, ensuring a comfortable and enjoyable ride
  • Proudly Made in the USA with premium, locally-sourced materials


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This product fits the following vehicles:
Make Model Chassis Engine
Audi S4 B9 (2018-Present) 3.0t TFSI
Audi A5 B9 (2018-Present) 2.0t TFSI
Audi A4 B9 (2017-Present) 2.0t TFSI
Audi S5 B9 (2018-Present) 3.0t TFSI
Audi RS5 B9 (2018-Present) 2.9t TFSI
Audi allroad B9 (2017-Present) 2.0t TFSI
Audi SQ5 B9 (2018-Present) 3.0t TFSI
Audi Q5 B9 (2018-Present) 2.0t TFSI
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You're reviewing: Transmission Mount Insert - Billet Aluminum (JHM) for Audi B9 A4-S4-A5-S5-RS5-Q5-SQ5, C8 RS6-RS7, D5 S8 and 4M SQ7-SQ8
Off-road Use

By Purchasing any Off-Road use ONLY products from JH Motorsports, Inc. I acknowledge and understand the following disclosure. (This notice is located at the bottom of the page description of affected products on our website.)

Vehicle Code § 27156:
(b) No person shall operate or leave standing upon a highway a motor vehicle that is required to be equipped with a motor vehicle pollution control device under Part 5 (commencing with Section 43000) of Division 26 of the Health and Safety Code or any other certified motor vehicle pollution control device required by any other state law or any rule or regulation adopted pursuant to that law, or required to be equipped with a motor vehicle pollution control device pursuant to the National Emission Standards Act (42 U.S.C. Secs. 7521 to 7550, inclusive) and the standards and regulations adopted pursuant to that federal act, unless the motor vehicle is equipped with the required motor vehicle pollution control device that is correctly installed and in operating condition. No person shall disconnect, modify, or alter any such required device.
(c) No person shall install, sell, offer for sale, or advertise any device, apparatus, or mechanism intended for use with, or as a part of, a required motor vehicle pollution control device or system that alters or modifies the original design or performance of the motor vehicle pollution control device or system.

Health and Safety Code § 43000:
43001. The provisions of this part shall not apply to:
(a) Racing vehicles.

As the aforementioned code sections outline, it is against the law to operate or use a vehicle on public streets or highways with modified, altered, or disconnected motor vehicle pollution control devices. This may include but is not limited to, Evaporative Fuel Controls, Catalysts, DPF, PTOX, PCV Systems, Exhaust Gas Recirculation Systems, Oxygen Sensors, Thermostatic Air Cleaners, Air Intake Systems, Fuel Injectors, Regulators, Adjustable Cam Gears, ECU Programming, Mapping, or other Computer Modifications. Air Pumps, Air Injection, Timing, and any other Emission System Modification(s).

Purchaser acknowledges and certifies to JH Motorsports Inc., that Purchasers vehicle will only be used for racing applications or off road vehicle use only. Purchaser requests these modifications for the purpose of enhancing the vehicle for competitive Racing Applications and will not use this vehicle on public streets or highways. Purchaser agrees to indemnify JH Motorsports Inc., all employees, officers, owners, and subsidiaries for any civil or criminal liability arising out of use of Purchasers vehicle on public streets or highways as Purchaser has been duly notified of the laws and regulations regarding disconnecting, alteration, or modification of a vehicle’s pollution control devices. Purchaser understands and has been advised the driving of a vehicle on public streets or highways could result in criminal or civil penalties.

Prop 65

Warning: This product may contain a chemical known to the State of California to cause cancer, birth defects, or other reproductive harm.

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