Alcon RC6/RC4 Big Brake Kit – Front & Rear | Nissan GT-R R35

Alcon RC6/RC4 Big Brake Kit – Front & Rear | Nissan GT-R

The Alcon RC6/RC4 Big Brake Kit is engineered specifically for the Nissan GT-R, featuring the latest CAR70 front and CAR69 rear calipers beautifully machined from forged alloy. This kit delivers industry-leading braking performance with 390mm x 35mm front discs and 380mm x 30mm rear discs, both with lightweight aluminium bells, and comes standard with Dixcel Type Z high-performance brake pads.

Both front and rear calipers feature staggered pistons to ensure even pad wear. The pistons are manufactured from a proprietary steel renowned for its exemplary thermal resistance under extreme braking conditions. Additional design features engineered to withstand the intense temperatures generated during hard braking include unique weatherproof seals and an internal fluid passageway that eliminates the need for an external bridging pipe.

The kit comes standard with Dixcel Type Z brake pads — a high-performance compound offering excellent initial bite, strong fade resistance, and broad operating temperature range suitable for both street and track use. The kit has been enhanced to deliver the same proven performance as the Alcon Superkit.

Tested extensively on a Nissan GT-R Track Edition, this kit delivers not only significantly increased stopping power but also exceptional pedal feel — a hallmark of Alcon's engineering philosophy.

Caliper Features:

• Front: RC6 (CAR70) – Two-piece 6-piston forged caliper
• Rear: RC4 (CAR69) – Two Piece 4-piston forged caliper
• 6-piston design for high stiffness (firm pedal) with low weight
• Staggered piston bore sizes to ensure even pad wear
• 7% larger piston area on front calipers; 11% larger piston area on rear calipers
• Pin-mounted pads provide low threshold pressure and low noise
• Pads formulated for excellent fade resistance at elevated temperatures
• Strong cold performance for start-up and city driving
• Low noise operation

Disc Features:

• Front: 390mm x 35mm semi-floating disc assembly with "C" grooves and lightweight aluminium bells
• Rear: 380mm x 30mm semi-floating disc assembly with "C" grooves and lightweight aluminium bells
• Two-piece design featuring aerospace-specification alloy bells for high strength with minimum weight
• Unique iron alloy developed by Alcon for optimum bite, thermal stability, and durability
• Unique crescent grooves on friction faces provide the bite of drilled discs without the durability drawbacks
• Directional curved cooling vanes for optimum cooling performance
• Alcon's floating disc system allows thermal expansion throughout disc life while minimising judder tendency

Kit Includes:

• Front RC6 (CAR70) 6-piston forged calipers (pair)
• Rear RC4 (CAR69) 4-piston forged calipers (pair)
• 390mm x 35mm front semi-floating disc assemblies (pair)
• 380mm x 30mm rear semi-floating disc assemblies (pair)
• Dixcel Type Z brake pads – front and rear sets
• Braided stainless steel brake lines
• Mounting brackets and all hardware