VTT G8X Lightweight Front Brake Kit

G80 M3 / G82 M4 / G83 / G81

Don’t confuse single-pass drag brake kits with a true performance braking system.

Non-vented 4-piston “drag only” kits are built for one thing — a single pass. They are not designed for repeated street use, highway driving, or real-world braking demands.

The VTT G8X Lightweight Front Brake Kit is different.

We drop nearly 60 lbs of unsprung weight off the front of your G8X, while running 13” vented rotors and 6-piston calipers — giving you serious stopping power and real-world usability.

This system allows you to run the front wheel and tire combination required for traction and ET reduction, while putting your factory front brakes on a serious weight reduction program.

Less weight.
Vented rotors.
6 pistons.
Real stopping power.

Plug-and-Play Design

Complete bolt-on system using genuine VTT components:

• VTT Custom 13” HD Vented Rotors

• Genuine VTT 6-Piston Calipers

• Genuine VTT Street or Race Pads

• DOT-Approved Brake Lines

• VTT CNC 7075 Rotor Hats

• VTT CNC Brackets

Pad compatibility:

• 6-Piston Dynapro Pad Style 6712
  (Multiple aggressive compounds available.)

Fitment

• G8X Platform – All models supported

We only offer the 6-piston configuration for the G8X platform due to vehicle weight and braking demands.

Designed for:

• Street driving

• Drag racing

• Moderate track duty

Weight Savings Breakdown

FRONT (Per Side)

Factory:

• Caliper: 18.3 lbs

• Rotor: 28.6 lbs

• Total: 46.9 lbs

VTT:

• 6-Piston Caliper + Bracket: 5.3 lbs

• Rotor + Hat: 12.5 lbs

• Total: 17.8 lbs

✔ 29.1 lbs savings per side
✔ 58.2 lbs total front unsprung weight savings
✔ 32.2 lbs rotating mass reduction

REAR (Optional Conversion Reference)

Factory per side:

• Rotor: 18 lbs

• Caliper: 15.1 lbs

• Total: 33.1 lbs

VTT 6-Piston Setup per side:

• Rotor + Hat: 12.4 lbs

• Caliper: 5.3 lbs

• Total: 17.7 lbs

✔ 15.4–16.7 lbs savings per side
✔ 30.8–32.1 lbs total rear unsprung savings
✔ 11.2–12.5 lbs rotating weight reduction

Total Potential Vehicle Savings (Front + Rear)

✔ Massive unsprung reduction
✔ Significant rotating mass reduction
✔ Improved acceleration and weight transfer

Important Disclaimer

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

Always operate within your limits.

Bedding Procedure – CRITICAL

Brake pads must be properly bedded 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

Proper bedding instructions are included with your kit.

• Free US shipping on orders over $250.
• Free pickup at our Dallas shop, usually ready within 24 hours.
• Unused parts can be returned within 30 days. Tunes, opened electronics, merch and installed parts are final sale.
• Want it installed? Book the install at thegbmotors.com.

Full details are on our shipping and returns page.