The R32 Skyline rear brake kit from Endless represents decades of experience in motorsport engineering applied directly to one of Japan’s most iconic performance cars. Designed specifically for the R32 GT-R V Spec and V Spec II, the system replaces the stock rear calipers with a forged aluminum 4-pot Big 4 assembly, increasing rear-end control while maintaining the balanced, confident feel that defines the GT-R’s driving character. The larger rear caliper provides additional clamping power, creating a more progressive pedal response and improving weight transfer under braking.
Every component of the kit has been optimized to withstand the intensity of circuit driving. The forged aluminum caliper body weighs only 3,486 grams yet maintains the rigidity needed to prevent flex under load. Endless designed the caliper dimensions to pair perfectly with 355 mm to 370 mm rotors, allowing consistent rear braking torque even during repeated high-temperature cycles. When used with the brand’s 6-pot or 12-pot front calipers, the result is an ideal front-to-rear brake bias that remains stable through long sessions of hard driving.
The R32 Skyline rear brake kit doesn’t sacrifice everyday drivability for performance. On the street, the caliper’s improved modulation gives smoother pedal feedback and shorter stopping distances without abrupt bite. On the track, it provides the kind of thermal capacity and reliability demanded in endurance competition. Endless developed this system through extensive testing in both racing and time attack environments to ensure the GT-R chassis could perform at its full potential.
Endless forges its Big 4 calipers from premium-grade aluminum to achieve high stiffness without excess mass. The forging process eliminates internal voids and imperfections, creating a dense structure capable of maintaining shape even under extreme heat and hydraulic pressure. This rigidity allows for more precise pad contact, giving the driver accurate pedal feedback and consistent stopping power throughout each braking cycle.
To protect the metal, the calipers are finished in Endless’s signature blue anodized coating. Unlike paint or powder coat, anodizing forms an oxide layer within the aluminum surface itself, strengthening it against corrosion and abrasion while improving its heat tolerance. This surface treatment ensures that the R32 Skyline rear brake kit retains both performance and aesthetics over time, even after repeated thermal stress from track conditions.
Endless offers multiple pad compounds with the Big 4 system, including SSM, TR, MX72, and MX72 Plus. Each provides a unique friction profile, allowing drivers to tailor their setup for specific environments. MX72 and MX72 Plus offer strong bite and fade resistance for circuit use, while SSM and TR provide smoother engagement and reduced dust for fast street driving. Whichever combination is chosen, the caliper design ensures uniform pad wear and stable friction across the entire braking range.
The R32 Skyline rear brake kit’s rotor is the foundation of the R32 Skyline rear brake kit, and Endless applies its proprietary E-Slit design to maximize performance. The E-Slit pattern combines a long curved slit with four smaller E-shaped slots. The curved slit continuously shaves the pad surface, keeping it fresh and free from glazing, while the smaller E-Slits generate consistent friction and help maintain even pad temperature. This dual-action “double shaving” effect stabilizes the braking coefficient (mu), ensuring that pedal pressure directly translates to predictable deceleration every time.
Endless manufactures the R32 Skyline rear brake kits rotors from a high-carbon steel blend engineered for strength and thermal stability. A special heat treatment process is performed before final assembly to relieve internal stress within the metal, significantly reducing the chance of heat cracks or warping over prolonged use. The blue-painted bell hat not only resists corrosion but also adds a subtle visual accent visible through open-spoke wheels. As the rotor wears, the long slit gradually fades; once the “E” pattern begins to stand out, it serves as a built-in indicator that the rotor is due for replacement.
This meticulous attention to detail defines the R32 Skyline rear brake kit, turning a simple braking system into a precision tool that responds with consistency under both street and circuit pressures.
Endless recommends performing a full bedding procedure to unlock the R32 Skyline rear brake kit’s true capability. Bedding allows the pad material to transfer evenly onto the rotor surface, forming a uniform layer that improves friction stability and minimizes uneven wear. For the R32 Skyline rear brake kit, the process involves gradually heating the rotors to 400–500°C through controlled braking, never abrupt or aggressive, and then allowing the system to cool naturally below 100°C.
When completed correctly, the results are immediate. The pedal develops a solid initial bite, pressure builds smoothly, and modulation becomes precise even in extended braking sequences. Circuit drivers will notice reduced fade during repeated high-speed stops, while spirited street drivers gain smoother response in daily use. Proper bedding also extends the life of both pads and rotors, ensuring the system maintains performance session after session.
Every component included in the R32 Skyline rear brake kit works together to create a unified system. The kit comes with two forged aluminum Big 4 calipers, two large-diameter E-Slit rotors, two stainless-steel braided brake lines for improved pedal feel, caliper mounting brackets, and Endless brake pads selected for the driver’s preferred use case. The setup is designed to work seamlessly with 17-inch wheels and above, though wheel clearance varies depending on the model and spoke design.
Each piece of the system reflects Endless’s philosophy: combine lightness, rigidity, and thermal control to deliver repeatable performance. The result is a braking system that brings out the R32’s true driving dynamics: stable, confident, and balanced under pressure.
The R32 Skyline rear brake kit from Endless is available exclusively through Bulletproof Automotive. Each kit is handcrafted in Japan and built to meet the demands of serious drivers who expect competition-level precision from their R32 GT-R. Forged aluminum strength, carbon-steel E-Slit rotors, and meticulous attention to heat management make this one of the most capable braking systems available for the platform.
