TAROX Rear 370mm Big Brake Kit – Super Sport 12-Piston/12-Pot (B350-12) – BMW M3 E90/E92 S65 – 2-Piece Vented Discs Performance Brake Upgrade BBK Conversion

Ultimate back-axle big brake conversion for BMW M3 E90 and E92

Transform your V8 M3’s stopping performance with this Italian-engineered rear braking upgrade. Precision machined calipers, lightweight two-piece vented rotors and track-proven pad options deliver exceptional bite, heat control and pedal feel for fast-road and track-day driving.

Key specifications

• Caliper model: B350-12
• Rotor size: 370 mm two-piece vented discs
• Minimum wheel requirement: 19 inch
• Handmade in Italy with premium materials

Why this upgrade stands out

• 12-piston billet aluminium calipers provide balanced pad pressure, outstanding clamping force and confident modulation under repeated heavy braking.
• Two-piece rotors reduce unsprung mass and improve heat dissipation for fade resistance and consistent performance on spirited drives and circuit use.
• Application-specific piston sizing retains proper hydraulic balance, so there is no need to change the master cylinder or interfere with factory ABS systems.
• Hard anodised caliper finish in black or grey for durability. Colour options available on request.

Pad compounds included to suit your driving

• Strada for fast-road use
• Corsa for dual road and track
• Competizione for circuit-only applications

Large pad shapes maximise contact area and temperature stability, delivering confidence on every stop.

Disc face styles

Supplied as standard with F2000 face design. Sport Japan, D95 and C83 patterns can be specified when ordering at no additional cost.

Built for the E9x platform

Designed for the BMW M3 E90 and E92, this rear setup is a perfect partner for high-power builds, coilover-equipped cars and anyone seeking a serious performance braking solution without compromising day-to-day drivability.

Real-world results

We have fitted this setup to multiple customer cars and our own projects. Feedback has been consistently positive, with owners praising stronger initial bite, superior high-speed stopping power and rock-solid pedal consistency over long sessions.

Finish and care

Hard anodised calipers are chosen for longevity. If selecting colour anodising, use non-acidic wheel cleaners and remove wheels before cleaning to protect the finish.

Lead time

Each kit is made to order in Italy. Typical build time is up to 14 days before dispatch.

Fitting and support

Professional installation recommended. Book your install with MJ Modifications in Warwickshire. For a fitting quote, email info@mjmodifications.co.uk.

Compatibility and notes

• Vehicle: BMW M3 E90 and E92 rear axle
• Wheel clearance: 19 inch or larger required
• Images are for reference only

Search-friendly highlights

E90 M3 rear big brake conversion, E92 M3 performance braking, 12 piston rear caliper upgrade, two-piece rear rotors 370 mm, track-day brake kit for BMW M3 V8, fade-resistant rear brakes, lightweight vented discs, premium Italian braking system.

Caliper reference: B350-12