VTT F8X Ultimate Lightweight Rear Brake Kit

F87 M2 / F80 M3 / F82–F83 M4

Looking to make your F8X M2C/M3/M4 faster in the 1/4-mile or 1/2-mile?

Want to run 17” rear wheels?

Want to retain the factory parking brake while dropping significant unsprung weight?

The VTT F8X Ultimate Lightweight Rear Brake Kit is engineered for straight-line performance while maintaining proper street functionality. This kit allows you to run the wheel and tire combo needed to lower ETs — all while putting your F8X on a serious weight reduction program compared to the factory rear setup.

✔ 17” rear wheel clearance
✔ Retains stock parking brake
✔ Up to 21 lbs total rear weight savings

True Plug-and-Play Design

Complete bolt-on system using genuine VTT components:

• VTT Custom 13” HD Rotors

• VTT 4-Piston or 6-Piston Calipers

• VTT Street or Race Brake Pads

• DOT-Approved Brake Lines

• VTT CNC 7075 Rotor Hats

• VTT CNC Brackets

Pad compatibility:

• 4-Piston Dynapro Pad Style 7812

• 6-Piston Dynapro Pad Style 6712

More aggressive pad compounds are available from multiple manufacturers to tailor performance to your application.

Fitment Guide – Rear

• F87 M2 / M2 LCI

• F80 M3 / M3 LCI

• F82 M4 / M4 LCI

• F83 M4 / M4 LCI

Configuration Options

HD 6-Piston Version

Designed for:

• Street driving

• Track duties

• Drag racing

Includes 13” HD rotors and VTT 6-piston calipers.

HD 4-Piston Version

Designed for:

• Street use

• Drag racing

Includes 13” HD rotors and VTT 4-piston calipers.

Weight Savings

OEM Rear Steel Setup

27.1 lbs per side
54.2 lbs total

VTT 4-Piston HD Kit

16.6 lbs per side
29.2 lbs total

✔ ~21 lbs total savings

VTT 6-Piston HD Kit

18.1 lbs per side
36.2 lbs total

✔ ~18 lbs total savings

Component Weights

• HD Rotor: 11 lbs

• VTT 4-Piston Caliper: 3.6 lbs

• VTT 6-Piston Caliper: 5.1 lbs

• Rotor Hat: 2 lbs

• 4-Piston Pads (per side): 1.0 lb

• 6-Piston Pads (per side): 1.7 lbs

Important Disclaimer

These HD kits are designed for street use and drag racing.

They are NOT intended for heavy braking environments such as:

• Auto-X

• Road Racing

• Extended track sessions

Always operate within your limits.

Bedding Procedure – CRITICAL

Proper pad bedding is mandatory to achieve full braking performance.

Failure to properly bed pads may result in:

• 30–50% braking effectiveness

• Pad glazing

If glazing occurs:

• Remove rotors

• Sand pads

• Re-bed properly

Your kit includes a bedding instruction card. Follow it exactly.