Upgrade your E46 M3 brakes with our 4-pot Brembo BBK retrofit kit. Featuring Brembo Renault Mégane RS Trophy-R calipers, custom 6061-T6 aluminum caliper brackets made in the USA, stainless steel brake lines and all hardware necessary for caliper install. Rotors and brake pads not included. This is a direct bolt-on kit for the E46 M3 using 345×28 Competition/ZCP/CSL rotors.

🔴⚪🔵 Proudly sourced and assembled in the USA with local businesses and BMW friends

Out of stock

SKU 144029 Category Tag

E46 Brembo BBK Caliper Retrofit Kit

Brembo 4-Pot Calipers

TUV Certified reconditioned by Renault Factory in France

6061-T6 Anodized Brackets

CAD-designed and made in the USA

Porterfield SS Brake Lines

Custom stainless steel made in USA

Maintain OEM Brake Bias

Piston size optimized for performance

100% Bolt On Solution

Comes with all hardware necessary

Brake Bias Calculations

E46 M3

ChassisFront CaliperFront Disc (mm)Front BiasRear CaliperRear Disc (mm)Rear BiasDelta from Stock Bias
E46 M3Stock32566.9%Stock32833.1%0.0%
E46 M3Megane RS Trophy-R34566.3%99632833.7%0.5%
E46 M3BMW E31 840Ci32567.3%99632832.7%0.5%
E46 M3BMW E31 840Ci32566.3%Stock32833.7%0.6%
E46 M3Megane RS Trophy-R34565.3%Stock32834.7%1.6%
E46 M3Aston Martin DB934568.5%99632831.5%1.6%
E46 M3CSL34564.8%CSL32835.2%2.1%
E46 M3BMW 135i34564.6%99632835.4%2.3%
E46 M3Porsche 99634564.1%99632835.9%2.8%

Included in Kit

  • (2) Brembo Megane RS Trophy-R Calipers
  • (2) Buildjournal Caliper Adapters + Hardware
  • (2) Porterfield Custom Stainless Steel Brake Lines
  • (2) Brake Pad Hardware
  • (1) Loctite 263 Threadlocker

Additional information

Brembo, Buildjournal





Product Category



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Series Chassis Model
Series Chassis Model
3 Series E46 (99-06) M3
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