VTT F9X M5/M8 Ultimate Lightweight Front + Rear Brake Package

F90 M5 / F91 M8 / F92 M8 / F93 M8

Over 96 lbs removed. 26+ lbs of rotating mass eliminated. 17″ wheel fitment front and rear. VTT 6-piston front calipers. OEM BMW rear calipers. Factory electronic parking brake retained.

The VTT F9X M5/M8 Ultimate Lightweight Front + Rear Brake Package transforms the complete brake and wheel package from end to end.

The front conversion removes nearly 60 lbs.

The rear conversion removes another 36.8 lbs.

Together, the complete package removes more than 96 lbs of unsprung brake-system weight before accounting for any additional savings from lightweight 17″ wheels and tires.

At least 26 lbs of that reduction is confirmed rotating mass from the front rotor assemblies alone. The lightweight two-piece rear rotors reduce rotating mass even further.

This is not a stripped-down, single-purpose drag brake package.

The front uses substantial 13″ HD vented rotors and genuine VTT 6-piston calipers. The rear uses 12.15″ two-piece vented rotors while retaining the OEM BMW rear calipers and factory electronic parking brake.

The result is massive weight reduction, 17″ wheel clearance at all four corners, expanded wheel and tire options, and real braking capability for a heavy, extremely fast street and drag vehicle.

Less brake weight.
Less rotating mass.
Smaller and lighter wheel options.
More tire options.
More traction potential.
Factory electronic parking brake retained.
Real braking capability.

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OVER 96 LBS OF TOTAL WEIGHT REDUCTION

The complete VTT front and rear brake package removes more than 96 lbs from the vehicle:

• Nearly 60 lbs removed from the front axle
• 36.8 lbs removed from the rear axle
• More than 96 lbs of combined brake-system weight reduction

That weight is removed directly from the suspension and brake assemblies before making any changes to the wheels or tires.

Removing more than 96 lbs from any performance vehicle is significant.

Removing more than 96 lbs of unsprung and rotating brake mass is even better.

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26+ LBS OF ROTATING MASS REDUCTION

Approximately 26 lbs of rotating mass is eliminated by the front rotor and hat assemblies alone.

The lightweight two-piece rear rotors reduce rotating mass even further, making 26+ lbs the conservative combined claim.

Rotating mass must be accelerated in two ways:

• Forward with the vehicle
• Rotationally around the axle

Reducing rotational inertia means less energy is required to accelerate the brake, wheel, and tire assemblies.

For a vehicle being optimized for acceleration, vehicle response, and elapsed-time reduction, this is exactly where you want to remove weight.

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NEARLY 60 LBS OFF THE FRONT

The VTT Ultimate Lightweight Front Brake Kit removes nearly 60 lbs from the front axle.

Approximately 26 lbs of that reduction comes from rotating mass through the dramatically lighter rotor and hat assemblies.

The remaining reduction comes from the calipers, brackets, and other non-rotating portions of the brake assembly.

The front system uses:

• 13″ HD vented rotors
• Genuine VTT 6-piston calipers
• CNC-machined 7075 aluminum rotor hats
• F9X-specific mounting brackets

This delivers massive front-end weight reduction without turning the car into a single-purpose drag vehicle.

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36.8 LBS OFF THE REAR

The factory F9X rear brake assembly weighs approximately 39.7 lbs per side.

The complete VTT rear brake assembly weighs just 21.3 lbs per side.

That means the VTT rear conversion removes:

• 18.4 lbs per rear corner
• 36.8 lbs across the rear axle

The rear system uses 12.15″ two-piece vented rotors with lightweight billet aluminum hats while retaining the OEM BMW rear calipers and factory electronic parking brake.

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17″ WHEEL FITMENT FRONT AND REAR

The complete VTT brake package allows fitment of 17″ wheels at all four corners.

The massive factory brakes severely limit wheel diameter and restrict the wheel and tire combinations available for the F9X platform.

The VTT system removes that limitation.

Dropping down to 17″ wheels opens up a huge range of performance-oriented combinations, including:

• Lightweight drag wheels
• Drag radials
• Bias-ply tires
• Full slicks
• Taller-sidewall tire combinations
• Purpose-built drag racing wheel and tire packages

This gives F9X owners far greater freedom to optimize the vehicle around weight, traction, tire construction, sidewall, and overall drag-strip performance.

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THE WEIGHT SAVINGS CAN GO FAR BEYOND 96 LBS

The more than 96-lb reduction comes from the brake conversion alone.

Once the massive factory brakes are no longer dictating wheel diameter, the weight reduction can be taken significantly further.

Replacing the large, heavy factory wheels and tires with a lightweight 17″ package can remove even more rotating and unsprung mass from the vehicle.

The VTT brake package doesn’t simply save more than 96 lbs.

It unlocks the ability to remove additional rotating mass through wheel and tire selection while dramatically expanding available tire options.

For AWD F9X builds in particular, the ability to choose a tire package around maximum available traction rather than factory brake clearance can be a substantial advantage.

More sidewall.

More tire choices.

More traction options.

Less rotating mass.

None of it is possible if the factory brakes won’t fit inside the wheel.

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VTT ULTIMATE LIGHTWEIGHT FRONT BRAKE SYSTEM

The front brake system includes:

• VTT custom 13″ HD vented rotors
• Genuine VTT 6-piston calipers
• Genuine VTT street or race pads
• DOT-approved brake lines
• VTT CNC-machined 7075 aluminum rotor hats
• VTT CNC-machined F9X-specific caliper brackets
• Required installation hardware

The front system removes nearly 60 lbs while retaining the thermal capacity and braking capability needed for a heavy, high-horsepower street and drag vehicle.

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VTT ULTIMATE LIGHTWEIGHT REAR BRAKE SYSTEM

The rear brake system includes:

• VTT 12.15″ two-piece vented rear rotors
• VTT CNC-machined billet aluminum rotor hats
• OEM BMW rear calipers
• Factory electronic parking-brake actuators
• VTT CNC-machined F9X-specific caliper brackets
• Required installation hardware
• Wheel spacers shown with the package, where applicable

The rear assembly weighs just 21.3 lbs per side, compared with 39.7 lbs per side for the factory assembly.

That saves 18.4 lbs at each rear corner and 36.8 lbs across the rear axle.

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RETAINS THE FACTORY ELECTRONIC PARKING BRAKE

The rear of the F9X presents a unique challenge because the rear caliper assembly incorporates the electronic parking-brake system.

Many lightweight brake conversions eliminate factory functionality in pursuit of the lowest possible weight.

We didn’t want to do that.

Instead, VTT designed the lightweight rear conversion around the OEM BMW caliper.

You get the weight reduction and 17″ wheel clearance of a purpose-built performance package without giving up the factory electronic parking brake.

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NOT A SINGLE-PASS DRAG BRAKE PACKAGE

Weight reduction is easy if you’re willing to sacrifice braking capability.

We weren’t.

The F9X M5 and M8 are heavy vehicles, and modified examples are capable of extraordinary horsepower, acceleration, and trap speeds.

That’s why VTT uses 13″ HD vented front rotors, genuine VTT 6-piston front calipers, 12.15″ two-piece vented rear rotors, and OEM BMW rear calipers.

The goal was straightforward:

Remove as much weight as possible without giving up the braking system required for a fast, heavy car.

The complete package is suitable for:

• Street driving
• Drag racing
• High-performance street use
• Moderate track use when properly configured and operated

You get the wheel clearance and massive weight reduction normally associated with a drag brake conversion while retaining substantial vented rotors and real braking capability.

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PACKAGE HIGHLIGHTS

• Over 96 lbs of total brake-system weight reduction
• Nearly 60 lbs removed from the front axle
• 36.8 lbs removed from the rear axle
• 26+ lbs of rotating mass reduction
• 13″ HD vented front rotors
• Genuine VTT 6-piston front calipers
• 12.15″ two-piece vented rear rotors
• OEM BMW rear calipers
• Factory electronic parking brake retained
• 17″ wheel fitment front and rear
• Additional rotating-mass reduction potential through wheel and tire selection
• Street and drag capability

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FITMENT

Designed specifically for the BMW F9X M5/M8 platform:

• F90 M5
• F91 M8
• F92 M8
• F93 M8

Wheel clearance varies according to wheel design, barrel profile, width, and offset.

Always confirm wheel fitment before purchasing wheels.

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THE BOTTOM LINE

The VTT F9X Ultimate Lightweight Front + Rear Brake Package does more than install smaller brakes.

It removes more than 96 lbs from the brake and suspension assemblies, reduces rotating mass, retains the factory electronic parking brake, and eliminates the brake-clearance barrier that prevents 17″ wheel fitment.

• Over 96 lbs of total brake-system weight removed
• 26+ lbs of rotating mass eliminated
• 17″ wheel fitment at all four corners
• More lightweight wheel options
• More tire options
• More traction potential
• Factory electronic parking brake retained
• Real braking capability

Drop the weight. Open up your wheel and tire options. Add traction. Keep the braking capability.

Lighter. Stronger. Faster. VTT engineered to win.

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IMPORTANT DISCLAIMER

VTT HD brake kits are designed for street use and drag racing, with moderate track use when properly configured with the appropriate pad compound.

Always operate your vehicle within your abilities and the capabilities of the braking system.

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BEDDING PROCEDURE - CRITICAL

Brake pads must be properly bedded to achieve full braking performance.

Failure to properly bed the pads can result in dramatically reduced braking effectiveness and pad glazing.

If glazing occurs:

• Remove the affected components as necessary.
• Properly prepare or sand the pad friction surface.
• Reinstall the components.
• Repeat the complete bedding procedure before demanding maximum braking performance.

Do not judge the braking capability of the system before the pads have been properly bedded.

Complete bedding instructions are included with every VTT brake kit.