Brembo F85 X5M / F86 X6M GT-R Big Brake Kit - 405x34mm 2-Piece Front

The Brembo GT-R Big Brake Kit for the BMW F85 X5M and F86 X6M represents the highest level of braking performance within Brembo’s Gran Turismo lineup, engineered for drivers who demand maximum stopping power under extreme street and track conditions. Designed with motorsport-derived technology, this system delivers exceptional thermal capacity, pedal precision, and braking consistency during aggressive driving.

At the core of the GT-R system are Brembo’s 6-piston billet monobloc radial mount calipers paired with large 405x34mm 2-piece floating discs. This combination provides increased structural rigidity, improved clamping force, and superior heat dissipation compared to cast caliper systems. Whether on the road or under repeated high-load braking, the result is sharper pedal response, enhanced modulation, and reduced fade in demanding environments.

The high carbon alloy discs feature a corrosion-resistant finish and Brembo’s advanced floating mounting system with an anti-rattle spring. Combined with a curved vane internal ventilation design, the system is optimized for maximum heat management, maintaining consistent braking performance even under sustained high-speed use.

Product Details

• Front axle Brembo GT-R big brake kit
• 6-piston billet monobloc radial mount calipers
• 405x34mm 2-piece floating discs
• Available in Cross Drilled, Type 1 Slotted, and Type 3 Slotted disc configurations
• Advanced high carbon alloy discs with corrosion-resistant plating
• Floating disc-to-hat mounting system with anti-rattle spring
• Brembo High Performance brake pads
• Stainless steel braided brake lines included
• CNC billet caliper adapters included
• All required mounting hardware included
• Designed for street, track, and race applications

Vehicle Applications

• BMW F85 X5M
• BMW F86 X6M

Technical Overview

• Axle: Front
• Caliper Type: Billet Monobloc Radial Mount
• Caliper Configuration: 6-Piston
• Disc Diameter: 405mm
• Disc Width: 34mm
• Disc Construction: 2-Piece Floating
• Disc Vane Design: Curved Vane Ventilation
• Disc Material: High Carbon Alloy
• Mounting System: Floating Mount with Anti-Rattle Spring
• Pad Compound: Brembo High Performance
  

What’s Included

• (2) Brembo 6-piston billet monobloc front calipers
• (2) 405x34mm 2-piece front discs
• Brembo high-performance brake pads
• Stainless steel braided brake lines
• CNC billet caliper mounting brackets
• All necessary installation hardware

Notes

• Wheel clearance must be verified prior to installation
• Professional installation is recommended
• Images are for representational purposes only, actual product may vary
• This item is not eligible for return once installed or test fitted
• How to measure wheel clearance
• Brake profile cross section