MMR Rear Brake Discs/Rotors 345mm x 24mm (345x24) - Slotted Grooved, High-Carbon Two-Piece - BMW 1 2 3 4 Series F20 F21 F22 F23 F30 F31 F32 F33 (F2x/F3x) - M Sport/M Performance Blue Caliper Upgrade - Pair, ECE R90, Track-Day Fast Road Replacement

MMR slotted rear rotors 345 x 24 for BMW F2x F3x with M Sport blue calipers

Transform the stopping power and confidence of your BMW 1 Series, 2 Series, 3 Series or 4 Series with these MMR rear slotted discs in the factory 345 mm x 24 mm size. Engineered for cars fitted with the M Sport Performance brake package with blue calipers, this two piece, high carbon solution delivers a stronger initial bite, repeatable braking and impressive heat control for fast road and track day use while remaining road legal and ECE R90 approved.

MMR’s directional slot pattern improves pad refresh and debris clearance for consistent friction. The lightweight aluminium bell with pin drive mounting helps control thermal growth and reduces unsprung mass. A smart black zinc anti corrosion finish on the bell and outer edge keeps the hubs looking clean behind your alloys.

• Direct swap for OEM 345 x 24 rear discs on F2x and F3x with M Sport blue calipers
• High carbon cast rotors for excellent heat stability and fade resistance
• Two piece design with aluminium bell for weight saving and durability
• Directional slots for crisp pedal response and reliable braking in the wet
• Anti rust coating on bell and rim for long lasting, tidy appearance
• Quieter than drilled alternatives and less prone to crack formation
• Supplied as a matched pair of rear rotors
• ECE R90 approved and suitable for everyday road use

Real world results you can feel

• More bite and confidence during spirited driving
• Stable pedal feel on repeated hard stops
• Effective pad deglazing and gas evacuation from the slot layout
• Cleaner looking hubs for longer thanks to the black zinc finish

We have installed these discs on customer cars and our own builds. Feedback has been excellent, with drivers praising the immediate response, consistent performance and reduced fade on fast B road runs and track days.

Compatibility

Only for cars with the M Sport Performance brake package with blue calipers. Rear disc size 345 mm x 24 mm.

• BMW 1 Series F20 F21 2011 to 2019
• BMW 2 Series F22 F23 2013 to 2020
• BMW 3 Series F30 F31 2012 to 2019
• BMW 4 Series F32 F33 2014 to 2020

Recommended pairing

• MMR Performance front discs rotors - part number MMR30-0501F
• MMR RP650 fast road pads - rear MMR27-0501R - front MMR27-0501F

For the best balance and bedding, combine these rear rotors with MMR RP650 pads and the matching front discs. Also compatible with quality OEM equivalent pads.

Fitting and support

Direct replacement for the factory 345 x 24 rear discs. We advise installing new pads with new discs for optimal bedding and performance.

Want a professional install or supply and fit package? Book with MJ Modifications in Warwickshire. Email info@mjmodifications.co.uk for a quote.

Search terms to help you find this item

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