2023-2026+ BMW I7 (G70) CCB Big Brake Kit | Brembo GT6 6-Piston
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
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2023-2026+ BMW I7 (G70) CCB Big Brake Kit — Genuine Brembo GT6 Front + Genuine Brembo GT4 Rear Setup
The 2023-2026+ BMW i7 G70 is a heavy electric luxury sedan, so repeated high-speed stops and mountain driving put more energy into the brakes than a lighter 7 Series application. This StopFlex kit replaces the factory friction package with 380mm front carbon-ceramic rotors and Brembo V6 / GT6 / GTS6 6-Piston Caliper Options, paired with rear Brembo V4 / GT4 / GTS4 4-Piston Caliper Options on 355 or 380mm carbon-ceramic rotors. The payoff is higher heat tolerance, lower brake dust on large i7 wheels, reduced rotating mass versus comparable iron hardware, and fitment engineered around the customer's exact trim rather than a generic G70 assumption.
- 380mm is the largest rotor in this i7 G70 kit, so 19-inch wheels are the minimum; spoke clearance and wheel offset still must be checked before production.
- Front options are V6, GT6, or GTS6 6-piston Brembo calipers on 380mm carbon-ceramic rotors, with the Genuine Brembo GT6 configuration matching the page's primary upgrade intent.
- Rear options use Brembo V4, GT4, or GTS4 4-piston calipers with 355 or 380mm carbon-ceramic rotors so the rear axle is matched to the front upgrade instead of left as an unrelated factory setup.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | BMW I7 (G70) |
| Model years | 2023-2026+ |
| Front setup | Brembo V6 / GT6 / GTS6 6-Piston Caliper Options / 380mm |
| Rear setup | Brembo V4 / GT4 / GTS4 4-Piston Caliper Options / 355/380mm |
| Page type | Complete CCB kit upgrade |
| Minimum wheel size | 19" (for the 380 mm front rotor) |
Every StopFlex kit is bespoke-engineered for your exact model and trim — the brackets, rotor-hat offsets, and caliper mounting are matched to your specific car, not assumed from the platform. This matters because trims that share a chassis name can differ mechanically: a pure M or performance variant often carries different front knuckles/uprights, hub geometry, and wheel axial (ET) clearance than the standard models in the same family, so a bracket and hat offset that bolt onto one are not the same parts that fit the other. StopFlex supplies the calipers, pads, rotor hats, floating hardware, and brake lines as a matched system built to your confirmed trim. Cars with modified knuckles, modified uprights, or non-factory suspension mounting points must be reviewed before ordering and are not treated as direct-fit.
This setup uses a 380 mm front rotor, so the minimum wheel size is 19". Wheels under 19" will not clear the caliper and rotor, and spoke profile and offset affect clearance too — confirm your exact wheels before ordering.
| Wheel Size (Standard) | Disc Range |
|---|---|
| 15" | 260 mm – 285 mm |
| 16" | 285 mm – 300 mm |
| 17" | 300 mm – 330 mm |
| 18" | 330 mm – 355 mm |
| 19" | 355 mm – 380 mm |
| 20" | 380 mm – 400 mm |
| 21" | 400 mm – 420 mm |
| 22" | 420 mm – 440 mm |
Caliper Overview — Front & Rear Balance
Front Caliper (Primary Upgrade)
The front axle uses Brembo V6 / GT6 / GTS6 6-Piston Caliper Options, each paired with a 380mm front rotor: V6 is a Genuine Brembo OEM Cadillac CTS-V 6-Piston Caliper, GT6 is a Genuine Brembo GT | M6 6-Piston Caliper, and GTS6 is a Genuine Brembo GT | S6 6-Piston Caliper. A six-piston fixed caliper spreads pad pressure more evenly across the swept area than a smaller sliding-caliper layout, supporting firmer pedal response and more stable clamping under repeated stops. These are genuine Brembo caliper families, selected for proven fixed-caliper architecture and machined mounting integration with the StopFlex hat, bracket, pad, line, and hardware package.
Rear Caliper (Balance)
The rear axle uses Brembo V4 / GT4 / GTS4 4-Piston Caliper Options with 355 or 380mm carbon-ceramic rotors, chosen to keep rear torque contribution and stability aligned with the larger six-piston front package. Because the BMW i7 G70 uses a factory electronic parking brake, rear-kit engineering must account for EPB function and will be confirmed against the exact trim before production.
Front & rear, engineered together: On the i7 G70, front and rear brake torque, rotor mass, hat offset, and caliper position need to be engineered as one system because the car's weight and regenerative-braking integration make rear behavior noticeable during hard stops. StopFlex builds the front six-piston and rear four-piston package around the confirmed trim so the kit does not create a front-heavy mismatch or wheel-clearance problem.
Make It Yours — Color & Logo Customization
Every StopFlex kit-upgrade order can be finished with custom caliper colors, a custom caliper logo, and custom rotor hat colors, so the brake package matches your exact build instead of a fixed off-the-shelf look.
- Custom caliper color
- Custom caliper logo
- Custom rotor hat color
Why StopFlex CCB
Lower Unsprung Mass
StopFlex carbon-ceramic rotors are engineered to reduce rotor mass versus comparable iron discs, helping the suspension react cleaner and the steering feel more precise.
High-Temperature Stability
The carbon-silicon-carbide matrix is built for stable braking behavior at temperatures that can push iron rotors into heavy fade.
Rust-Free Rotor Surface
Carbon ceramic does not form orange flash rust after rain, washing, or storage, keeping the visible rotor face cleaner behind open wheels.
Long Street-Service Potential
In normal road use with matched pads and proper bedding, StopFlex CCB rotors are designed for far longer service life than typical iron replacement rotors.
Low Visible Dust
When paired with matched StopFlex pads, the system produces very low visible brake dust compared with conventional iron rotor and pad combinations.
Premium Ceramic-Glaze Appearance
StopFlex's proprietary coating creates a bright, high-end ceramic-glaze finish with subtle glaze texture and a more premium visual character behind open wheels.
Street-Usable Cold Bite
Street Spec and Track-Day Spec rotors are designed for normal first-stop road use, including cold-weather operation. Motorsport Spec is the competition-focused exception.
Continuous Fiber Reinforcement
Long-fiber carbon ceramic construction improves structural strength and thermal durability versus chopped-fiber approaches.
Heat Management Note
Carbon ceramic rotors tolerate extreme surface temperature, but they do not remove every heat-management requirement. During repeated hard stops, heat can still soak into pads, fluid, seals, calipers, wheels, and nearby components. For long track sessions, mountain descents, or sustained aggressive driving, brake cooling and high-temperature fluid are still recommended.
Street / Track-Day / Motorsport Rotor Options
Street Spec
Ceramic coating, cross-drilled face, and large cooling channels.
Best for daily driving and premium street builds that need clean cold bite, low dust, corrosion-free appearance, and long service life.
Track-Day Spec
Ceramic coating, blank face, and honeycomb cooling channels.
Best for fast-road and track-day use where repeated braking stability matters more than maximum visual drilling style.
Motorsport Spec
Uncoated blank face with honeycomb cooling channels.
Best for race-focused builds that run competition pads, high-temperature fluid, cooling strategy, and a proper warm-up window. Not the default street choice.
Package Scope
| Item | Details |
|---|---|
| Front calipers | Brembo V6 / GT6 / GTS6 6-Piston Caliper Options |
| Front CCB rotors | 380mm |
| Rear calipers | Brembo V4 / GT4 / GTS4 4-Piston Caliper Options |
| Rear CCB rotors | 355/380mm |
| CCB brake pads | Matched for the supplied StopFlex carbon ceramic rotors |
| Rotor hats and floating hardware | Vehicle-specific hardware package |
| Brake lines | Included for complete kit-upgrade orders |
| Color customization | Custom caliper colors, a custom caliper logo, and custom rotor hat colors are available for every kit-upgrade order. |
| Order scope | Default listing is full-car set when front and rear are specified. Front-only or rear-only orders can be arranged after confirmation. |
| Front caliper option mapping | V6 = Genuine Brembo OEM Cadillac CTS-V 6-Piston Caliper — 380 mm rotor GT6 = Genuine Brembo GT | M6 6-Piston Caliper — 380 mm rotor GTS6 = Genuine Brembo GT | S6 6-Piston Caliper — 380 mm rotor |
| Rear caliper option mapping | V4 = Genuine Brembo OEM Cadillac CTS-V 4-Piston Caliper — 355 / 380 mm rotor GT4 = Genuine Brembo GT | M4 4-Piston Caliper — 355 / 380 mm rotor GTS4 = Genuine Brembo GT | S4 4-Piston Caliper — 355 / 380 mm rotor |
EPB & Rear Caliper Options
This vehicle leaves the factory with an electronic parking brake (EPB) built into the rear brake, so the rear of the kit is built to keep that EPB working. There are two rear paths. The first is a dual-caliper rear: a main performance caliper handles braking while a dedicated EPB actuator caliper is retained alongside it, so the electronic parking brake, auto-hold, and hill-start assist all keep working; on this path the rear performance caliper can be the TTSPORT EP4 / EP4S 4-piston caliper. The second is an EPB-integrated caliper, a single rear caliper with the electromechanical parking-brake motor built in for a cleaner install with fewer parts behind the wheel; on this path the rear is the TTSPORT EP4 / EP4S 4-piston caliper with integrated EPB. Which path fits best depends on your exact trim and EPB configuration, your budget, your appearance preference, and your wheel size and spoke clearance. Confirm your car's rear-brake configuration with StopFlex before ordering so the correct EPB-compatible rear option is built for your kit.
| Rear option | What it is | Rear caliper | Best when |
|---|---|---|---|
| Dual caliper (EPB retained) | Performance caliper plus a dedicated EPB actuator caliper, both fitted on the rear, so the factory electronic parking brake keeps working. | TTSPORT EP4 / EP4S 4-Piston Caliper | You want guaranteed factory EPB, auto-hold, and hill-start behavior preserved. |
| EPB-integrated caliper | A single rear caliper with the electromechanical parking-brake motor built in, for a cleaner install with fewer parts behind the wheel. | TTSPORT EP4 / EP4S 4-Piston Caliper with integrated EPB | You want a cleaner single-caliper rear with full EPB function. |
FAQ
Will this StopFlex kit fit my exact 2023-2026+ BMW i7 G70 trim?
Fitment is confirmed per vehicle, not assumed from the G70 chassis name. StopFlex checks the exact i7 trim, factory brake package, hub and upright details, wheel size, wheel offset, and spoke clearance before specifying brackets, rotor-hat offsets, and caliper mounting.
What wheel size do I need for the 380mm front rotor?
The largest rotor in this i7 kit is 380mm, so wheels under 19 inches will not clear it. A 19-inch or larger wheel is still not an automatic approval because spoke shape and offset must clear the Brembo six-piston front caliper.
Will the electronic parking brake and Auto Hold still work?
The BMW i7 G70 uses a factory electronic parking brake, so rear kit configuration must preserve EPB compatibility where the rear caliper package is ordered. StopFlex confirms the rear hardware strategy for the exact trim before production rather than treating all G70 rear brakes as identical.
Why switch an i7 from factory brakes to carbon-ceramic?
The i7 is heavy and quiet, so brake dust, rotor mass, and heat buildup are more noticeable in daily use and repeated high-speed braking. The StopFlex carbon-ceramic package targets lower dust, improved heat stability, and reduced rotating mass while using 380mm front rotors and genuine Brembo six-piston front caliper options.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
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