What is the difference between a dry carbon bonnet and a standard carbon fiber bonnet?

Dry carbon fiber uses less resin than wet-laid prepreg construction, which results in a lighter and stiffer finished panel. The Top Secret dry carbon aero bonnet for the R35 GT-R uses this process to reduce weight more aggressively than a typical carbon body part while maintaining structural integrity under sustained track conditions.

Does the Top Secret dry carbon aero bonnet GT-R require a front bumper upgrade on pre-facelift cars?

Yes. Installing this bonnet on a 2008-2016 R35 GT-R requires retrofitting a 2017+ front bumper. The bonnet profile is designed around the facelift front end; fitment on the pre-facelift bumper will not work correctly.

Will this bonnet affect underhood temperatures at the track?

The integrated air duct is positioned to push airflow directly over the turbines, which the factory bonnet cannot do. On an R35 running hard, this makes a measurable difference in heat management between sessions compared to a sealed OEM or standard carbon panel.

Does the dry carbon construction hold up to heat from the R35's twin-turbo engine bay?

Dry carbon fiber is more thermally stable than wet-laid carbon and does not carry the excess resin that can soften or blister under sustained engine bay heat. The Top Secret GT-R bonnet is built for regular track use, not display.

Description

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BP PRICING DIFFERENCE

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Description

Top Secret Dry Carbon Aero Bonnet for EBA / 4BA-R35 Nissan GT-R

The Top Secret dry carbon aero bonnet GT-R owners have been waiting for, built to address two problems the factory bonnet cannot: heat management over the turbos and the aerodynamic drag that comes with the stock panel’s flat profile. Constructed from dry carbon fiber rather than wet-laid prepreg, the panel carries significantly less resin content, which translates directly to a lower finished weight and higher rigidity. The layup pattern is split down the centerline in a V-configuration, mirroring the design language of the MY22 NISMO Special Edition, with the weave arranged to draw the eye inward and emphasize the panel’s form at speed. An integrated air duct feeds forced cooling directly to the turbine, and the original striker hardware carries over with no modification. Rain guards for both sides are included along with ten genuine mounting clips; the covers attach and detach with a single-touch clip system so removing them for track days does not require tools or hardware juggling.

Features

Dry carbon fiber construction (lower resin saturation than wet-laid panels, reduced weight, higher rigidity)
V-pattern weave split down the centerline (referencing MY22 NISMO Special Edition design)
Integrated air duct
Compatible with the OEM striker, no bonnet latch modification required
Includes rain guards (left & right) and 10 genuine mounting clips
Single-touch clip system for rain guard removal and reinstallation

Applications

Nissan GT-R: EBA-R35, 4BA-R35 | 2017-2025

Notes

Includes rain guards and clips
Owners fitting this bonnet to a 2008-2016 GT-R will need to retrofit a 2017+ front bumper to achieve proper clearance and fitment
All Top Secret carbon is delivered in its raw state and will require prep and application of a UV resistant clear coat and/or PPF
While not required, it is recommended to install an Aerocatch, or similar hood pin solution, and bonnet dampers for use in high speed driving

Frequently Asked Questions

What is the difference between a dry carbon bonnet and a standard carbon fiber bonnet? Dry carbon fiber uses less resin than wet-laid prepreg construction, which results in a lighter and stiffer finished panel. The Top Secret dry carbon aero bonnet for the R35 GT-R uses this process to reduce weight more aggressively than a typical carbon body part while maintaining structural integrity under sustained track conditions.
Does the Top Secret dry carbon aero bonnet GT-R require a front bumper upgrade on pre-facelift cars? Yes. Installing this bonnet on a 2008-2016 R35 GT-R requires retrofitting a 2017+ front bumper. The bonnet profile is designed around the facelift front end; fitment on the pre-facelift bumper will not work correctly.
Will this bonnet affect underhood temperatures at the track? The integrated air duct is positioned to push airflow directly over the turbines, which the factory bonnet cannot do. On an R35 running hard, this makes a measurable difference in heat management between sessions compared to a sealed OEM or standard carbon panel.
Does the dry carbon construction hold up to heat from the R35’s twin-turbo engine bay? Dry carbon fiber is more thermally stable than wet-laid carbon and does not carry the excess resin that can soften or blister under sustained engine bay heat. The Top Secret GT-R bonnet is built for regular track use, not display.

About Top Secret

Top Secret Co., Ltd. (株式会社トップシークレット, Kabushiki-gaisha Toppu Shīkuretto) is a renowned Japanese automobile tuner and parts manufacturer, founded by automotive engineer and driver Kazuhiko “Smokey” Nagata. The company is widely recognized for its expertise in tuning, aftermarket parts, body kits, and performance engineering. Top Secret’s product range includes aero components, exterior and interior parts, engine upgrades, exhaust systems, chassis, brakes, suspension, and powertrain enhancements. In addition to its products, Top Secret is also famous for its high-speed Wangan runs, as well as its involvement in professional drifting, circuit racing, and drag racing.

Additional Information

The Bulletproof Automotive website contains many thousands of products purchased in multiple different currencies. All of the prices are entered manually and accurately at the time of entry. Due to the consistently fluctuating international exchange rates, at times prices may not be able to be honored at their original intended rate. We apologize for any inconvenience this may cause, unfortunately our website is unable to compensate dynamically for what can at times be volatile changes in the cost of items due to currency values fluctuating, changes in prices from suppliers, changes in shipping and import duties, and other factors. Rest assured that any order you place on line will be at zero risk to you in this area. If in the event your order cannot be fulfilled at the original intended website price we will offer you a 100% refund, no questions asked. We will continue to do our best to maintain updated prices and we will always continue to offer our price match guarantees as well to ensure our prices are always the best for you. In short, prices may change without notice. It is always advised to give us a call prior to placing your order online to confirm availability and to confirm current pricing.

Shipping Policy

Items that are in stock in the US, either at Bulletproof’s warehouse or at a supplier’s warehouse, are generally delivered within 7-10 days. Special order items from overseas take considerably longer. As a courtesy Bulletproof offers delivery estimates to our customers which take into consideration manufacturer availability and shipping schedule. These estimates represent our best guess based on previous orders from the manufacturer and do not in any way imply a guaranteed delivery window. Many manufacturers work in a “just in time” inventory system and often take 2-20+ weeks to produce an item once an order is submitted. All deliverable items are then sent to our Japanese warehouse. Bulletproof ships a minimum of one full ocean freight container every month from Japan, oftentimes more than one a month. Ocean freight takes an average of 4 weeks. Typically it breaks down to one week in Japan for paperwork and customs, two weeks by boat and one week in US customs/clearance. Due to the wide number of variables between manufacturer and shipping schedules, delivery estimates are simply just that – estimates. We attempt to estimate conservatively and we usually deliver faster than our estimates suggest. It is not Bulletproof’s policy to guarantee delivery time of any special order item, this is impossible for us to do. By ordering you acknowledge that there is no required delivery ETA and an order may not be canceled or altered due to manufacturing or shipping delays, all ETA’s are provided as a best guess only. Please review the full Terms & Conditions here.

BP Pricing Difference

We do pricing a little differently on our JDM brands and we believe in making things simple and clear. No hidden fees or surcharges. Every price you see includes the shipping cost to our office in Los Angeles, California and all the associated taxes/duties/fees for bringing the products into the US. The only shipping you ever pay is from our facility in the US to your location. Be wary of resellers that don’t include the cost of international shipping in their pricing on JDM parts. While we believe we’ll always have the lowest all-in price on JDM products, we offer a price match guarantee for all authentic parts purchased from authorized dealers as well. For many international customers, it’s much more affordable to ship from the USA than from Japan directly, as the air freight and ocean freight costs are typically much less. However, for customers looking to ship directly from Japan outside of North America, or domestically in Japan, we can provide pricing specifically for that scenario. Please do not hesitate to contact us with any pricing questions or concerns. Please email us at sales@bulletproofautomotive.com with any inquiries.

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Top Secret Dry Carbon Aero Bonnet for EBA / 4BA-R35 Nissan GT-R

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Top Secret Dry Carbon Aero Bonnet for EBA / 4BA-R35 Nissan GT-R

Features

Applications

Notes

Frequently Asked Questions

About Top Secret