MMR Performance 6-Pot/Six-Piston Front Big Brake Kit (BBK) - 380mm 2-Piece Floating Discs/Rotors, Nickel Monoblock Calipers - BMW F2x/F3x M135i M140i M235i M240i (F20 F21 F22 F23) Track/Fast Road Uprated Front Brake Conversion

Race-bred six piston front brake conversion for BMW F2x and F3x

Unlock serious stopping performance for your BMW M135i, M140i, M235i or M240i with this MMR Performance front-axle upgrade. Forged monoblock calipers in a durable nickel finish clamp oversized 380 mm floating two-piece rotors, giving you repeatable, fade-resistant braking for fast road and track days. Expect a firmer, more confidence-inspiring pedal, stronger initial bite and superb modulation every time you lean on the middle pedal.

We run this setup on our own cars and customer builds, and the feedback is consistently outstanding. If you are chasing a proper big brake conversion for your F2x or F3x, this package delivers the feel and stamina you want without compromise.

Key reasons to choose this upgrade

• Forged T-6061 aluminium six piston monoblock calipers for exceptional rigidity and control under heavy braking
• Hard nickel plated calipers for a distinctive motorsport look and excellent corrosion resistance
• 380 mm fully floating two-piece discs with FC-25 carbon steel rings for consistent performance during prolonged hard use
• Directional curved vanes maximise cooling and reduce heat soak to combat brake fade
• Proprietary grooved faces help deglaze pads and maintain crisp, predictable bite
• Supplied with MMR fast-road pads and uses the common AP6 pad shape for easy future pad choices
• Braided stainless front brake lines sharpen pedal feel and response
• Billet steel caliper brackets and all required hardware included for a complete front-end solution

What you get in the box

• Pair of T-6061 forged monoblock six piston calipers in nickel finish
• Pair of 380 mm fully floating two-piece discs with FC-25 rings
• MMR fast-road front pads, AP6 pad profile
• Billet steel caliper mounting brackets
• MMR braided stainless steel front brake hoses
• All mounting hardware required for installation

Compatibility and wheel clearance

Designed for BMW F2x and F3x platform cars, specifically M135i, M140i, M235i and M240i. The 380 mm front discs require adequate clearance. A 5 mm or greater spacer is required with OEM 18-inch wheels.

Fitting service

Want it installed by specialists? Book professional fitting with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote and availability.

Search-friendly terms

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