Is this part compatible with the factory CBA-R35 rear bumper without any other modifications?

No. This finisher is a support piece for builds fitting a later-model rear under bumper to the CBA-R35. It is not designed as a standalone addition to the stock rear bumper. If the car is running the original CBA-R35 rear bumper without any later-model components, this part does not apply.

Does this part come painted or ready to fit?

It is supplied unpainted. Painting or clear coating will need to be arranged separately before or during installation. Given that sheet metal factory installation is expected, coordinating paint finish with the installation shop is the straightforward approach.

Does this finisher affect aerodynamics or is it purely cosmetic?

The primary function is underside shaping support, which is a structural and cosmetic role rather than a dedicated aerodynamic one. A properly shaped and supported underside does contribute to cleaner underbody airflow compared to a gapped or unsupported surface, but this part is not positioned as an aero performance component in the same way the rear side diffusers or front diffuser are.

Description

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Description

Top Secret Carbon Rear Under Finisher for CBA-R35 Nissan GT-R

The Top Secret carbon rear under finisher GT-R pre-facelift owners fitting a later-model rear under bumper to an 08-11 CBA-R35 need bridges the underside shaping gap that installation creates. The later-model rear under bumper does not transfer cleanly to the early R35 body without leaving an unsupported area underneath; this carbon finisher fills and shapes that section so the finished result reads as a cohesive, natural underside rather than an obvious retrofit. The function is structural and cosmetic in equal measure: the spoiler supports the underside shaping while presenting a clean finish that does not read as an afterthought. Full carbon construction, unpainted.

Features

Supports underside shaping when fitting a later-model rear under bumper to the CBA-R35
Produces a natural, cohesive finish without visible gaps or mismatched transitions
Full carbon construction

Applications

Nissan GT-R: CBA-R35 | 2008-2011

Notes

This part is designed to support the fitment of a later-model genuine rear under bumper on CBA-R35 builds; it is not a standalone rear spoiler intended for use without that context
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

Frequently Asked Questions

Is this part compatible with the factory CBA-R35 rear bumper without any other modifications? No. This finisher is a support piece for builds fitting a later-model rear under bumper to the CBA-R35. It is not designed as a standalone addition to the stock rear bumper. If the car is running the original CBA-R35 rear bumper without any later-model components, this part does not apply.
Does this part come painted or ready to fit? It is supplied unpainted. Painting or clear coating will need to be arranged separately before or during installation. Given that sheet metal factory installation is expected, coordinating paint finish with the installation shop is the straightforward approach.
Does this finisher affect aerodynamics or is it purely cosmetic? The primary function is underside shaping support, which is a structural and cosmetic role rather than a dedicated aerodynamic one. A properly shaped and supported underside does contribute to cleaner underbody airflow compared to a gapped or unsupported surface, but this part is not positioned as an aero performance component in the same way the rear side diffusers or front diffuser are.

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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