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, providing an effective amount of downforce while reducing air resistance. Computational Fluid Dynamics (CFD) analysis was performed on this wing to support the verification of its aerodynamic design.
Each airfoil in the GTC series is constructed from lightweight and durable carbon fiber reinforced polymer (CFRP) composite materials. These airfoils include pre-preg carbon fiber woven sheets that provide superior strength and reduced weight. All CFRP airfoils are manufactured using pre-preg composite production 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 the Shaftoya shopping site, we cover the import consumption tax incurred at the time of import, so there are no additional charges beyond the total amount paid at checkout.
〇Confirmation of Compatibility
Since our entire product database is based on North American vehicles (USDM), please confirm whether or not installation on Japanese vehicles (JDM) is possible 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.)
Please note that we cannot accept returns due to incompatibility if you place an order without confirming compatibility beforehand.
Furthermore, please be aware that even if products are sorted by selecting the model year, manufacturer, and vehicle model via the tabs on our top page, this does not necessarily mean they will fit 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 automatically calculated when you enter your shipping address on the checkout page. In rare cases, there may be a significant discrepancy between the automatically calculated shipping amount and the actual cost for large items such as body parts. In such cases, we will contact you individually via email.
Basically, all products are shipped internationally from our US warehouse. Unlike domestic shipping in Japan, international delivery takes about 7 to 14 days, so please place your order with sufficient time. 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)
Essentially, all products we handle are 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 materials for this purpose. Therefore, all parts are sold for use on "circuits, private land, or off-road," and installation and use are at your own risk.
○Regarding Warranty
Please check the contents immediately upon arrival. Since all products are shipped internationally from outside Japan, there may be shipping damage to the packaging boxes or the products themselves. Please understand that we will only provide returns, refunds, or replacement products for items with shipping damage, defective goods, or items different from your order if you contact us within 7 days of receipt. Furthermore, for products sold through our company, 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.