The Endless Racing Big 4 Rear Performance Brake System delivers a level of refinement that suits the R34 chassis perfectly. Known for its sensitivity to rear grip and load transfer, the Skyline benefits immediately from a stronger and more heat-stable system. This R34 GT-R Big Brake Kit is engineered for the type of driving where brake temperature management, pedal consistency, and balanced response matter more than anything. Endless built it as a direct answer to the demands of circuit drivers, touge runners, and anyone who asks the car to perform through extended high-speed braking zones.
The Big 4 rear caliper is sized to work in harmony with Endless 12-pot or 6-pot front systems. Together, the full spread forms a complete braking package that gives the R34 GT-R a balanced feel at turn-in. With the R34 platform, small mismatches in braking force front to rear can show up as rotation issues in tight transitions. This R34 GT-R Big Brake Kit eliminates those quirks by giving the rear axle the proper authority to settle the car under load.
Endless chose forged aluminum for the caliper body to keep weight low without sacrificing strength. Forging produces a dense material structure that handles heat cycle stress far better than cast alternatives. At 3486 grams, the calipers resist flex and provide accurate pedal feedback during long sessions. This matters for R34 drivers who run consistent laps and rely on predictable braking points.
The blue anodized finish is another functional decision. Anodizing strengthens the surface by forming a protective aluminum oxide layer that fights abrasion and heat far more effectively than paint or powder coat. For an R34 GT-R Big Brake Kit that will see real abuse, a hardened finish is essential. It keeps the caliper operating smoothly and shields the metal from countless temperature swings.
The kit is matched to rotors between 355 and 370 millimeters. Endless includes 370 by 34 millimeter rotors, pairing the calipers with a wide contact surface for improved brake stability. A 17-inch wheel minimum is required, but exact clearance depends on wheel brand, design, and inner barrel shape.
Endless uses the E-Slit rotor to maintain pad condition through long driving cycles. The long curved slit gently reshapes the pad face, while four smaller E-Slits sharpen bite and stabilize friction levels. The result is a smooth, repeatable feel that holds steady as heat rises. This is one of the reasons the R34 GT-R Big Brake Kit is trusted for high-load environments where brake temperatures spike repeatedly.
The rotors are built from a special carbon steel blend that helps resist heat cracks. Endless treats the rotors with a heat stabilization process before they ever reach a car. Heat cycling normally expands and contracts untreated steel, creating fine surface cracks that reduce braking performance over time. With the Endless treatment, the rotor structure remains stable, allowing drivers to push harder for longer without the typical degradation.
The bell hat portion is finished in blue, offering corrosion resistance and a cohesive look with the calipers. It keeps the assembly clean even when exposed to varied weather and track conditions.
Endless stresses that bedding is not optional for circuit-style pads. To get full performance from this R34 GT-R Big Brake Kit, the rotor must be brought to roughly 400 to 500 degrees Celsius using controlled braking, without harsh pedal input. Once the rotor cools naturally to 100 degrees or below, the bedding process is complete. Endless recommends avoiding rain during bedding, as moisture can disrupt pad transfer and prevent the pad from forming its ideal surface.
The R34 GT-R Big Brake Kit includes Endless Racing calipers, rotors, stainless brake lines, mounting brackets, and a matched pad set. Every component is designed to support high temperatures and aggressive driving.
The Endless Racing R34 GT-R Big Brake Kit is available through Bulletproof Automotive, where it stands as one of the most capable rear systems for the R34 platform. Bulletproof specializes in high-end parts that pair quality with proven track performance, and this R34 GT-R Big Brake Kit fits directly into that mission. Drivers looking to refine the brake balance of their R34 GT-R or prepare the car for heavier circuit use will find this kit to be a straightforward upgrade built with long-term reliability in mind.
