2004-2021 Subaru WRX STI Full Drivetrain Upgrade Kit (by Perrin)
Perrin engine mounts eliminate most motor movement, effectively transferring power to the ground and giving the driver a better feel for the car. This improves launches during drag racing and autocross events.
A stiffer transmission mount increases the connection with the car. The Perrin transmission mount kit reduces most drivetrain movement, allowing more power to be effectively transferred to the ground. This means more precise launches during drag racing and autocross events.
Under heavy acceleration, torque twist from the front axles causes the drivetrain to twist back and forth. To control this front-to-back movement, Subaru developed the pitch stop mount. The factory pitch stop is made of plastic with soft rubber bushings, allowing for significant movement under hard driving conditions, which causes drivetrain pitching and shuddering.
Features
- Pitch stop body material: Aluminum
- Bushing material: Polyurethane
- Finish: Anodized
Benefits
- Significant improvement in handling performance and feel
Applications
- 2004-2021 Subaru WRX STI
What's in the box?
- 1 - Pitch stop mount
- 1 - Engine mount
- 1 - Transmission mount
Warranty
- Perrin standard 5-year limited warranty
Before Ordering
〇Regarding Import Consumption Tax
At the Shaftoya shopping site, we cover the import consumption tax incurred at the time of import on your behalf, so there are no additional charges beyond the total amount paid at checkout.
〇Confirmation of Compatibility
As our entire product database is based on North American (USDM) vehicles, please confirm whether or not parts can be installed on Japanese (JDM) vehicles before placing your order. (If you are unsure if a listed product is compatible with your vehicle, please feel free to contact us. Our support team will investigate for you.)
If you place an order without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if products are sorted by selecting the year, manufacturer, and vehicle model in the tabs on our homepage, it does not necessarily mean they are compatible with Japanese models without modification.
All products have been translated into Japanese using translation software. As there may be confusing expressions, please contact us before ordering if you have any questions.
○Regarding Shipping
Shipping costs are paid at the time of payment. Shipping estimates are calculated automatically when you enter your shipping address on the checkout page. For large items such as body parts, there are rare cases where the automatically calculated shipping cost differs significantly from the actual cost. In such cases, we will contact you individually via email.
All products are generally shipped internationally from our US warehouse. Unlike domestic shipping in Japan, international shipping takes about 7 to 14 days, so please allow yourself enough time when ordering. If you are in a hurry, please contact us in advance to confirm delivery times. All products are transported via air freight. They are never shipped by sea freight.
○Regarding Compliance with Japanese Vehicle Inspection (Shaken)
The products we carry are generally designed and manufactured outside of Japan. Please note that they are not compliant with the "Japanese vehicle inspection system," and we cannot provide strength calculation documents or similar paperwork for the Japanese inspection system. Therefore, all parts are sold for "circuit, private property, or off-road use only," and installation and use are at your own risk.
○Regarding Warranty
Please check the contents of your order as soon as it arrives. As all products are shipped internationally from outside Japan, there may be damage to the packaging or products due to shipping. We will provide returns, refunds, or replacement products only if you contact us within 7 days of receipt regarding items with shipping damage, defective products, or incorrect items received. Please note that for products sold through us, warranty-related support will be provided "exclusively through us." We do not provide support through other companies or distributors located in Japan.