With a span of 67 or 61 inches and a height of 13 inches, the GTC-300 is an adjustable wing suitable for serious business. The 3D airfoil shape of the GTC-300 allows for optimal airflow that delivers an effective amount of downforce while reducing air resistance. Computational Fluid Dynamics (CFD) analysis was performed on this wing to support validation of its aerodynamic design.
Each airfoil in the GTC series is constructed of lightweight and durable Carbon Fiber Reinforced Polymer (CFRP) composite materials. These airfoils include pre-pregnated carbon fiber woven sheets that provide superior strength and reduced weight. All CFRP airfoils are manufactured using pre-preg composite manufacturing processes (such as high-temperature autoclaving and vacuum bagging) in high-quality aluminum billet molds.
Supporting the wing are 10 mm "aircraft-grade" 6061 billet aluminum pedestals with a flat black powder coat finish.
Before Ordering
〇 Regarding Import Consumption Tax
At Shaft-ya Shopping Site, we pay 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 all product databases are based on North American vehicles (USDM), please confirm whether the product can be installed on a Japanese domestic vehicle (JDM) before ordering. (If you are unsure whether the listed product is compatible with your vehicle, please feel free to contact us. Our support team will be happy to check 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 using the tabs on our top page, 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 Delivery
Shipping costs are paid at the time of payment. Shipping estimates are automatically calculated when you enter your shipping address on the checkout page. For large items such as body parts, the actual shipping cost may rarely differ significantly from the amount calculated automatically. In such cases, we will contact you individually by email.
Basically, all products are shipped internationally from our US warehouse. Unlike domestic delivery in Japan, international shipping takes about 7 to 14 days, so please order with enough time to spare. If you are in a hurry, please contact us in advance to confirm the delivery date. Note that all products are transported by air. They are not shipped by sea freight.
○ Regarding Compliance with Japanese Vehicle Inspection (Shaken)
The products we handle are basically all designed and manufactured outside of Japan. Please note that they are not compliant with the "Japanese Vehicle Inspection System," and we cannot provide strength study documents or similar for the Japanese vehicle inspection system. Therefore, all parts are sold for the purpose of "use on circuits, private property, and off-public roads," and we ask that you install and use them at your own risk.
○ Regarding Warranty
Please check the contents immediately upon arrival of the product. Since all products are shipped internationally from outside Japan, there may be shipping damage to the packaging box or the product itself. Please understand that for products with shipping damage, defective products, or products different from your order, we will only handle returns, refunds, or replacement exchanges if you contact us within 7 days of receipt. Please also note that for products sold through us, warranty support will be handled "exclusively through us." We do not provide support through other companies or distributors located within Japan.