Elevate the stopping power and thermal endurance of your BMW with the Original M Performance Braking System. This high-performance retrofit is engineered specifically for the G-Series chassis, providing a significantly larger friction surface and superior fade resistance compared to the standard braking system. Characterized by the iconic M-Performance Red (or Blue/Yellow) 4-piston fixed calipers, this kit is an essential upgrade for spirited street driving or light track use, ensuring consistent deceleration even under high thermal loads.

Included Components (Complete Retrofit Kit):

• Front Axle: 4-piston aluminum fixed calipers in M Performance Red with “M” Logo.

• Rear Axle: 1-piston floating calipers with integrated electronic parking brake (EPB) actuator.

• Brake Discs (Front): Lightweight, ventilated, and perforated/grooved 374mm x 36mm discs.

• Brake Discs (Rear): Ventilated and perforated/grooved 345mm x 24mm discs.

• Performance Brake Pads: Specifically formulated compound for high-friction and low-compressibility.

• Protection Plates: Enlarged heat shields for optimized airflow and component protection.

• Installation Hardware: All necessary sensor cables, clips, and mounting bolts.

Specifications:

• Model Compatibility: BMW 3 Series (G20/G21), 4 Series (G22/G23/G26), and i4 (G24/G26).

• Disc Design: Inner-vented, dimpled, and grooved to prevent water film buildup and improve gas dissipation.

• Material: Lightweight aluminum caliper construction to reduce unsprung mass.

• Wheel Requirement: Requires a minimum of 18-inch wheels (specifically BMW-approved designs) for caliper clearance.

• Brake Fluid: Recommended use of BMW DOT 4 LV (Low Viscosity) or high-performance racing fluid.

Vehicle Compatibility:

• BMW 3 Series: G20 Sedan / G21 Touring (318i – M340i/d).

• BMW 4 Series: G22 Coupe / G23 Convertible / G26 Gran Coupe.

• BMW i4: eDrive35, eDrive40, M50, M60.

• Note: Also compatible with other G-platform models (G30 5er / G11 7er) sharing the same hub geometry.

Features:

• Enhanced Thermal Capacity: The larger, perforated discs offer a significantly higher surface area, allowing for faster cooling during repetitive high-speed braking maneuvers.

• Sharper Pedal Feel: The 4-piston fixed caliper design provides a more direct and linear pressure distribution, resulting in a more predictable and communicative brake pedal.

• Corrosion Resistance: The multi-layer paint finish and aluminum construction ensure the calipers maintain their striking appearance and functionality against road salt and moisture.

• Factory Integration: This is a 100% original-style retrofit that maintains the full functionality of the ABS, DSC (Dynamic Stability Control), and the Brake Assistant systems.

• Visual Impact: The perforated discs and oversized colored calipers provide a dominant, motorsport-inspired look behind open-spoke alloy wheels.

Installation & Coding:

• Software Update: After installation, the vehicle’s Electronic Control Unit (ECU) must be coded (retrofit entry “SPBR”) to adjust the brake force distribution and DSC parameters for the larger calipers.

• Bedding-in: A specific bedding-in procedure is required for the first 200km to ensure optimal pad-to-disc contact and performance.