MMR Performance 6-Piston 355mm Front Big Brake Cup Kit, Dark Anthracite - BMW F2x/F3x (F20 F21 F22 F23) M135i M140i M235i M240i - Forged Monoblock Calipers, Floating Discs

Looking for a serious front brake upgrade for your BMW 1 Series or 2 Series on the F2x and F3x chassis? This MMR Performance 6‑pot 355 mm front brake package in Dark Anthracite is the proven solution for fast road and track day use, delivering huge stopping performance, razor‑sharp pedal response and rock‑solid consistency under heat. Ideal for BMW M135i, M140i, M235i and M240i owners who want a direct‑fit front axle brake conversion that just works.

Track-capable stopping power for road and circuit

The lightweight T‑6061 forged monoblock 6‑piston calipers offer outstanding stiffness for confident modulation and repeatable pedal feel. Paired with fully floating two‑piece 355 mm rotors that use directional curved vanes, this kit sheds heat quickly and resists fade lap after lap. MMR’s grooved rotor face maintains a clean pad contact patch for strong initial bite and stable friction, drive after drive. Finished in a discreet Dark Anthracite for an OEM plus motorsport look.

Key benefits

• 6‑pot forged aluminium monobloc calipers for strength, precision and pedal stability
• 355 mm two‑piece floating discs with directional vanes for rapid cooling and heat management
• Grooved rotor rings to deglaze pads and deliver consistent bite on road and track
• Fast‑road pad set using the common AP6 pad profile for easy compound upgrades later
• Braided stainless steel front brake hoses for a firmer, more responsive pedal
• Direct‑fit billet steel mounting brackets with all fixings for a straightforward install
• Dark Anthracite calipers for a subtle, premium finish that suits OEM wheels

What you get in the box

• T‑6061 6‑piston forged monoblock calipers
• FC‑25 carbon steel two‑piece fully floating 355 mm discs
• MMR fast‑road pads, AP6 pad profile
• Billet steel caliper brackets
• Braided front brake lines
• All required hardware

Vehicle compatibility

Direct fit for BMW F2x and F3x platform performance models:

• BMW 1 Series F20 F21 M135i, M140i
• BMW 2 Series F22 F23 M235i, M240i

Popular searches this kit solves: BMW F20 brake upgrade, F21 front brake conversion, F22 performance brakes, F23 6‑pot calipers, M135i front brake kit, M140i BBK, M235i big brakes, M240i 355 mm rotor upgrade, F2x F3x front caliper and disc kit, floating discs for BMW 1 Series and 2 Series.

Wheel clearance

Requires a 5 mm or greater spacer to clear OEM 18 inch wheels.

Real-world feedback

We have installed and run this setup on our own cars and on numerous customer builds. The response has been consistently positive, with drivers praising the confidence under heavy braking, the progressive feel and the fade resistance during spirited driving and track sessions.

Fitting and support

Professional installation recommended. For fitting, book with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Good to know

Also available in 380 mm on select applications. If you need guidance on compatibility or wheel fitment, contact us and we will be happy to help.

Why choose this upgrade

• Serious stopping power without the weight penalty of oversized factory calipers
• Built to handle repeated high‑speed stops with stable performance and minimal fade
• Perfect for fast road, track days, driver training and performance builds
• OEM plus look that complements M Sport styling and aftermarket wheel setups

If you are searching for a front brake package for BMW 1 Series or 2 Series that delivers confidence and control, this MMR 6‑pot 355 mm kit is the upgrade enthusiasts choose for their F20 F21 F22 F23 builds.