Alcon Rear Big Brake Kit – BMW M2/M3/M4 (F8X)

Developed specifically for motorsport, the Alcon Rear Big Brake Kit for the BMW M2, M3, and M4 (F8X) delivers consistent high-performance braking under extreme track conditions. Choose from Alcon’s CAR36 or CAR49 4-piston calipers, matched with 355×28mm two-piece rotors from either Alcon or Paragon. This system is engineered to provide optimal rear brake torque and thermal capacity to complement aggressive front brake setups and aerodynamic loads.

Strictly for track use, this kit removes dust seals for maximum performance and is not suitable for street driving.

Caliper Options

Alcon CAR36 (28.6mm / 28.6mm Pistons)
– Billet aluminium construction for reduced weight
– Balanced piston sizing for tunable rear torque output
– Compact design for tight-fitment applications

Alcon CAR49 (31.8mm / 31.8mm Pistons)
– Forged aluminium body for increased stiffness
– Higher fluid volume for greater rear braking force
– Internal fluid crossover eliminates external pipework
– Supports rotors up to 355mm diameter

Key Features
– Motorsport-only application – no dust seals
– 4-piston rear calipers: CAR36 or CAR49
– Stainless steel pistons to minimise heat transfer
– 2kg anti-knock back springs for pad stability under cornering
– Bolted pad retainers for easy servicing
– Directional slotted 2-piece rotors (355×28mm) – Alcon or Paragon
– Heat-treated and dynamically balanced rotor rings
– Compatible with 18”+ wheels

Included
– 2x Alcon 4-piston rear calipers (CAR36 or CAR49)
– 2x 355×28mm 2-piece slotted rotors (Alcon or Paragon)
– Caliper mounting brackets and hardware
– Braided stainless steel rear brake lines
– Anti-rattle pad retention system
– Assembly hardware and instructions

Vehicle Fitment
BMW M2 (F87), M3 (F80), M4 (F82/F83)
– Suited to dedicated track cars and motorsport builds
– Please confirm rotor clearance with aftermarket wheels

Note
Brake pads are not included and must be purchased separately.