To all BMW G90/G99 M5 owners: Experience the superior design and performance of AutoTecknic’s dry carbon fiber Performante rear diffuser, engineered specifically for the M5. Designed using our autoclave vacuum forming process, this advanced rear diffuser mounts seamlessly into the factory locations, enhancing both the aerodynamic efficiency and the aesthetics of your M5. Crafted from genuine 3K twill weave (2x2) pre-preg carbon fiber, this diffuser is finished with multiple layers of high-gloss, UV-resistant clear coat, offering exceptional durability and an unmistakably refined look.
Our dry carbon fiber manufacturing process embodies motorsport-grade quality, delivering lightness while ensuring strength and a precise fit. Through meticulous autoclave vacuum forming, each carbon fiber strand is impregnated with resin, molded, and cured under vacuum. The result is a structure that is even lighter and stronger than conventional "wet" carbon fiber. This process ensures a flawless finish free of pinholes and air pockets. The AutoTecknic Performante rear diffuser comes with sturdy mounting clips for a secure attachment. For optimal installation, we recommend removing the rear bumper to facilitate the insertion of the clips. Customize your BMW G90/G99 M5 with the unparalleled style, weight reduction, and performance benefits of this premium diffuser.
Before Ordering
〇Regarding Import Consumption Tax
At Shaftoya Shopping Site, we pay the import consumption tax incurred at the time of import on your behalf, so there will be no additional charges beyond the total amount paid at checkout.
〇Confirmation of Compatibility
Our entire product database is based on North American specification vehicles (USDM), so please confirm compatibility with Japanese specification vehicles (JDM) before placing an order. (If you are unsure whether a listed product fits your vehicle, please feel free to contact us. Our support team will be happy to look into it 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 via the tabs on our homepage, it does not necessarily mean they will fit Japanese model vehicles 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 once you enter your shipping address on the checkout page. For large items such as body parts, there may occasionally be a significant discrepancy between the automatically calculated shipping cost and the actual cost. In such cases, we will contact you individually via email.
All products are fundamentally shipped internationally from our U.S. warehouse. Unlike domestic shipping within Japan, international shipping takes approximately 7 to 14 days, so please allow ample 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 not shipped by sea.
○Regarding Japanese Vehicle Inspection (Shaken) Compliance
All products handled by our company are designed and manufactured outside of Japan. Please be aware that they are not compliant with the "Japanese Vehicle Inspection System," and we are unable to provide strength study reports or similar documentation for this purpose. Therefore, all parts are sold for the purpose of "use on circuits, private property, or off-road," and installation and use are at your own risk.
○Regarding Warranty
Please inspect the contents immediately upon arrival. As all products are shipped internationally from outside Japan, there is a possibility of shipping damage to the packaging or the product itself. We will only provide returns, refunds, or replacements for items with shipping damage, defective products, or incorrect items if notified within 7 days of receipt. Please understand that for products sold through our company, warranty support will be handled "only through our company." Please note that we do not provide support through other companies or distributors located within Japan.