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IAG Performance Street Series 6 Speed Transmission Mount 2004-2021 STI

Original price $269.99 - Original price $269.99
Original price
$269.99 - $269.99
Current price $269.99
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The IAG Performance Street Series 6 Speed Transmission Mount is designed to help reduce drivetrain movement during performance driving scenarios. The mount features our Street Series Black 75A durometer bushings that are slightly stiffer than the Subaru GROUP N mounts and the body of the mount is made from CNC’d solid billet aluminum. The IAG mount also features a unique flush hardware design that eliminates the need to take the mount apart to install it on the vehicle. Additionally, the IAG mounts stiffness can be “tuned” by purchasing the IAG Competition Series Red 90A bushing kit.

(x1) IAG Street Series 6 Speed Mount with Black 75A Bushings
(x4) Allen Socket Head Mounting Screws

Customer Reviews

Based on 3 reviews
Mark Williams
Iag transmission street mount

I have a twin disc clutch and hated the vibration when letting it out this mount took care of that problem for me feels great.after that I got the iag Eng mounts to


Thank you for sharing your 5 Star Review along with your experience with the IAG Performance Street Series 6 Speed Transmission Mount. We are glad to hear that it has improved the vibration issue with your twin disc clutch. We appreciate your support and hope the IAG Engine Mounts also provide a positive upgrade for you. Have a great day!


Luis Hernandez

This works great would definitely recomend I didn’t feel much more nvh but i can feel the gear box a little more easy to install 20 min


Upgrading your transmission mount enhances the feel of your shifts and helps put more power directly to your wheels by reducing drivetrain movement! The IAG Performance Street Series 6 Speed Transmission Mount is the perfect option and just as you said only takes 20min to install! Thank you for your 5 Star Review!


Kyle McDonald
Great Transmission Mount - just know, it is stiff

Reconsider before opting for OEM when replacing your transmission mount, and instead consider this brilliant upgrade. While it's markedly stiffer, leading to a more tangible driving experience and you feel your clutch bite due to its rigidity, remember that it is, indeed, a performance mount. For those desiring even more feedback, the competition series is a fantastic option. I have this standard version in my wife's STI and the competition series in my own, both are exceptional yet distinct. Highly recommended for those who prioritize performance, 10/10


Thank you for sharing your feedback on the IAG Performance Street Series 6 Speed Transmission Mount. We are glad to hear that you found it to be a great upgrade from the OEM transmission mount. As you mentioned, this mount is designed for performance and may be stiffer than the OEM, which can lead to a more responsive and tactile driving experience. It's important for drivers to consider their personal preferences and driving style when choosing a transmission mount, but we agree that this is an excellent option for those who prioritize performance. Thanks again for your 5 Star Review and recommendation!


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