Do LED daytime running lights come included with this kit?

It depends on the variation and chassis. For CBA-R35 owners (2008-2011) selecting the with-DRL variation, LED daytime running lights using genuine 2011 model parts are included. For DBA-R35 owners (2012-2016), the DRLs are not included and require additional genuine parts.

Why is the diffuser mounted to the undercarriage reinforcement rather than the bumper shell?

A diffuser bolted to an FRP bumper shell moves with the bumper under aerodynamic load. At speeds the R35 is capable of, that flex compromises the diffuser's ability to manage underbody airflow consistently. Mounting it directly to the reinforcement keeps it fixed relative to the chassis, so it holds its position and does what it is supposed to do above 300 km/h rather than deflecting away from its designed angle.

How does this bumper kit compare to running a standalone splitter on the R35?

A splitter added to the factory bumper addresses front lift in isolation but does not change the bumper's own aerodynamic profile. The Top Secret V1 front bumper kit GT-R redesigns the front end geometry from the bumper out, with the 150mm extension and the independently mounted diffuser working together as a system. The result is more structurally coherent than bolting a splitter to a bumper that was not designed to work with one.

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Description

Top Secret V1 Front Bumper Kit for CBA / DBA-R35 Nissan GT-R

The Top Secret V1 front bumper kit GT-R owners on the CBA and DBA-R35 chassis need to address front lift at high speed is built around an extended bumper design that adds 150mm over the factory length. That extension is not cosmetic; it changes the airflow geometry at the front of the car in a way the stock bumper cannot achieve, reducing the lift that builds under the nose during sustained high-speed running. The FRP bumper shell is paired with an independent carbon diffuser that mounts directly to the undercarriage reinforcement rather than hanging off the bumper itself, a structural decision that gives the diffuser the rigidity to function correctly at speeds exceeding 360km/h rather than flexing away from its intended position. The design is based on the 2011 model R35 front end, and LED daytime running lights from the 2011 model are compatible; CBA-R35 owners receive DRLs included, while DBA-R35 owners may need to source additional genuine parts separately. Available with or without daytime running lights depending on the variation selected.

Features

Bumper length extended 150mm over factory
Reduced front lift at high speed
Independent carbon front diffuser mounted directly to undercarriage reinforcement
FRP bumper shell, carbon fiber diffuser
Based on 2011 model R35 front end design
LED daytime running lights compatible

Applications

Nissan GT-R: CBA-R35, DBA-R35 | 2008-2016

Notes

Sold as a bumper and carbon diffuser set
CBA-R35 – LED daytime running lights are included if selected
DBA-R35 – LED daytime running lights are not included if selected (reuse OEM DRL); additional genuine parts may be required
V2 front bumper kit is available here

Frequently Asked Questions

Do LED daytime running lights come included with this kit? It depends on the variation and chassis. For CBA-R35 owners (2008-2011) selecting the with-DRL variation, LED daytime running lights using genuine 2011 model parts are included. For DBA-R35 owners (2012-2016), the DRLs are not included and require additional genuine parts.
Why is the diffuser mounted to the undercarriage reinforcement rather than the bumper shell? A diffuser bolted to an FRP bumper shell moves with the bumper under aerodynamic load. At speeds the R35 is capable of, that flex compromises the diffuser’s ability to manage underbody airflow consistently. Mounting it directly to the reinforcement keeps it fixed relative to the chassis, so it holds its position and does what it is supposed to do above 300km/h rather than deflecting away from its designed angle.
How does this bumper kit compare to running a standalone splitter on the R35? A splitter added to the factory bumper addresses front lift in isolation but does not change the bumper’s own aerodynamic profile. The Top Secret V1 front bumper kit GT-R redesigns the front end geometry from the bumper out, with the 150mm extension and the independently mounted diffuser working together as a system. The result is more structurally coherent than bolting a splitter to a bumper that was not designed to work with one.

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.

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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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