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AutoTecknic G8X M3 / M4 Dry Carbon Fiber Rear Diffuser Trim Set

AutoTecknic G8X M3 / M4 Dry Carbon Fiber Rear Diffuser Trim Set

SKU:ATK-BM-0341

Regular price ¥103,500
Regular price Sale price ¥103,500
(Duties & import taxes included)
Import Duties & Taxes

The displayed price includes import duties and taxes. In principle, no additional payment is required upon delivery. If the shipping carrier nevertheless charges you import duties or taxes upon delivery, please pay the charges first. Shaft Shop will reimburse you for the amount paid.

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This dry carbon fiber rear diffuser trim set is part of the newly released dry carbon fiber collection by AutoTecknic for the G8X M3/M4. Manufactured using 100% genuine 3K twill weave (2x2) pre-preg carbon fiber and proprietary autoclave technology, this diffuser trim set is finished with multiple layers of high-gloss, UV-resistant clear coat. Adhering to the motorsport ideal of weight reduction, the use of an autoclave vacuum-forming process ensures superior strength and fitment. This diffuser trim set is designed to mount directly onto the factory mounting points around the diffuser, allowing for quick and easy installation.

Dry carbon is the highest quality carbon fiber product available. The name "dry carbon fiber" originates from its manufacturing process. Dry carbon fiber is molded using "pre-preg" or impregnated carbon material pieces. These pieces are first placed into a mold and then properly cured in a sealed vacuum environment (autoclave). This method minimizes impurities and creates a lighter carbon product than the "wet" method. The autoclave vacuum process used to produce dry carbon results in fewer pinholes and virtually zero air bubbles within the carbon.

This AutoTecknic dry carbon rear diffuser trim set comes with durable, precision-engineered mounting clips. Our autoclave technology ensures the ultimate in lightweight performance, high durability, and precise fitment.

Product Details:

  • Fits G8X M3/M4 factory rear bumpers (all model years)
  • Diffuser trim set includes a total of 3 pieces
  • Complete your carbon fiber diffuser with this trim set


Before Ordering

〇 Regarding Import Consumption Tax
At Shaft-Ya, we cover the import consumption tax incurred at the time of import on your behalf, so you will not be charged any additional fees beyond the total paid at checkout.

Checking Compatibility
Our entire product database is based on North American specification vehicles (USDM), so please verify compatibility with Japanese specification vehicles (JDM) before placing your order. (If you are unsure whether a listed product is compatible with your vehicle, please feel free to contact us. Our support team will be happy to look into it for you.)
If an order is placed without confirming compatibility, we cannot accept returns due to incompatibility.
Please note that even if products are sorted by year, manufacturer, or vehicle model using the tabs on our homepage, this 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 checkout. Shipping estimates are calculated automatically once you enter your shipping address on the checkout page. For large items such as body parts, the automatically calculated shipping cost may rarely differ 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 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 items are transported via air freight; they are not shipped via sea freight.

○ Regarding Japanese Vehicle Inspection (Shaken) Compatibility
Please note that all products we handle are designed and manufactured outside of Japan. They are not compliant with the "Japanese Vehicle Inspection System," and we are unable to provide strength calculation documents or similar paperwork for the Japanese inspection system. Therefore, all parts are sold for use on circuits, private land, or off-public roads; please install and use them at your own discretion and responsibility.

○ Regarding Warranty
Please check the contents of your order as soon as it arrives. As all products are shipped internationally from outside Japan, there is a possibility that the shipping box or the product may sustain damage during transit. Please understand that we will only provide returns, refunds, or replacements for damaged items, defective products, or incorrect items if notified within 7 days of receipt. Furthermore, for products sold through us, all warranty-related support will be handled "exclusively through us." Please note that we do not provide support through other companies or distributors located within Japan.