Here is a detailed technical and performance-focused breakdown of the TOP SECRET FULL BUMPER KIT VER.1 FOR NISSAN GT-R R35 (SKU: TOP-SECRET-00094):
Product Overview
The Top Secret Full Bumper Kit Ver.1 is a complete aero-enhancement package engineered by the legendary tuner Kazuhiko “Smoky” Nagata of Top Secret Japan.
Designed specifically for the Nissan GT-R R35, this kit brings together aggressive aesthetics with real-world aerodynamic functionality.
Kit Contents
Typically includes:
- Front Bumper Ver.1
- Rear Bumper
- Side Skirts
- Optional add-ons: canards, diffusers, and grille inserts (varies based on configuration or retailer)
Technical Advantages
1. Optimized Aerodynamic Performance
- Front bumper features widened ducting for efficient cooling to the intercoolers, oil cooler, and brakes.
- The splitter edge and diffuser contours are CFD-developed to reduce lift and increase downforce at high speeds.
- Rear bumper includes integrated diffuser fins, improving airflow separation and rear-end stability.
2. Lightweight and Durable Materials
- Constructed using fiberglass reinforced plastic (FRP) or optional dry carbon in premium versions, reducing overall weight compared to OEM bumpers.
- Maintains durability for both street and track use.
3. Enhanced Brake & Engine Cooling
- Enlarged mesh openings and side vents provide increased airflow to radiators and brakes, vital for tuned GT-Rs with higher thermal loads.
4. GT Aesthetics with Functional Edge
- Signature Top Secret styling: aggressive, race-derived profile with clean Japanese tuning ethos.
- Perfectly complements other Top Secret parts like GT bonnets, wings, or titanium exhausts.
5. Precision Fitment
- CAD-designed for OEM-level fitment on the R35, minimizing gaps and reducing installation complexity.
Installation & Compatibility
- Direct fit for Nissan GT-R R35 (2008–2021).
- Professional installation recommended, especially if pairing with aftermarket intercoolers or under trays.
Best Use Case
- Ideal for high-performance builds, track-spec GT-Rs, or show-stopping street cars that need both form and function.
- A favorite among R35 tuners in Japan and globally recognized as a “statement” aero kit.
Why Choose Top Secret Ver.1 Kit?
- Proven on Smoky Nagata’s own high-speed GT-R builds.
- JDM tuning legacy with real motorsport pedigree.
- Designed not just for looks, but for measurable gains in cooling and downforce.

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