2023-2026+ BMW I7 (G70) Carbon Ceramic Big Brake Kit — Brembo GT6
Official Warranty: We offer a 1-year free replacement for quality defects or coating issues under normal (non-track) use. Please note that provided specs apply strictly to brake hats and brackets; wheel fitment data is for general reference only. Wheel clearance issues are excluded from warranty coverage and data accuracy claims. If additional clearance is needed, wheel spacers must be added at the customer's discretion.
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Will This Fit My Car?
Full Upgrade CCB Big Brake Kits (With Calipers) for the 2023-2026+ BMW I7 (G70). This page's exact brake setup:
| Model Years | Front Setup | Rear Setup | Min. Wheel Size |
|---|---|---|---|
| 2023-2026+ | Brembo V6 / GT6 / GTS6 6-Piston Caliper Options / 380mm | Brembo V4 / GT4 / GTS4 4-Piston Caliper Options / 355/380mm | 19" |
This kit is built per car, not per platform. We engineer the brackets, rotor-hat offsets, and caliper mounting to your confirmed model and trim, because trims sharing a chassis name frequently differ underneath — performance variants can run different knuckles, hub geometry, and wheel ET clearance than their standard siblings. You receive calipers, pads, rotor hats, floating hardware, and brake lines as one matched, trim-specific system. Cars with modified knuckles, uprights, or non-factory suspension mounting points need review before ordering.
The 380 mm rotor sets the minimum wheel size at 19" — smaller wheels will not clear the caliper and rotor. Spoke profile and offset also affect clearance; 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 |
What's in the Box
| Item | Details |
|---|---|
| Product type | Full Upgrade CCB Big Brake Kits (With Calipers) |
| Front calipers |
Option 1: Brembo OEM Cadillac CTS-V 6-Piston Caliper — 380 mm rotor OE / Part No.: L 172-2521 · R 172-2522 Option 2: Brembo GT | M6 6-Piston Caliper — 380 mm rotor Option 3: Brembo GT | S6 6-Piston Caliper — 380 mm rotor |
| Rear calipers |
Option 1: Brembo OEM Cadillac CTS-V 4-Piston Caliper — 355 / 380 mm rotor OE / Part No.: L 172-2523 · R 172-2524 Option 2: Brembo GT | M4 4-Piston Caliper — 355 / 380 mm rotor Option 3: Brembo GT | S4 4-Piston Caliper — 355 / 380 mm rotor |
| Rotor construction | Short-Fiber Street Spec (lower price, street-only) or Long-Fiber Street / Track-Day / Motorsport Spec — chosen at order confirmation |
| CCB brake pads | Matched ceramic-compatible compound for the supplied StopFlex carbon ceramic rotors |
| Rotor hats and floating hardware | Vehicle-specific hardware package |
| Brake lines | Included for complete kit-upgrade orders |
| 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. |
Make It Yours — Color & Logo Customization
Every StopFlex kit order can be finished with custom caliper colors, a custom caliper logo, and custom rotor hat colors — the brake package matches your exact build, not a fixed off-the-shelf look.
- Custom caliper color
- Custom caliper logo
- Custom rotor hat color
Why Carbon Ceramic — and Why StopFlex
Short-Fiber or Long-Fiber — Your Call
Every StopFlex disc is true carbon-ceramic. Short-Fiber Street Spec uses a simpler chopped-fiber process for a lower price and street-only duty; the Long-Fiber line uses continuous carbon strands that carry load across the whole rotor for higher strength and thermal durability — the pick for track and race heat.
Bespoke Per-Vehicle Engineering
Every order is machined to the confirmed vehicle and trim. Brackets, hat offsets, and pad shapes are built for that exact car — never pulled from a one-size-fits-all catalog.
CCB-Specific Pad Compound
A low-metallic resin pad compound reinforced with steel, copper, and aramid fiber, made for ceramic discs: stable to about 750 °C, roughly 0.44 average friction, strong fade resistance, low rotor wear.
Lower Unsprung Mass
A like-size carbon-ceramic rotor can be materially lighter than an iron disc; the exact saving depends on rotor dimensions. Lower rotating, unsprung mass can reduce the load the suspension has to control.
High-Temperature Stability
The carbon-silicon-carbide friction material is selected for high-temperature stability and fade resistance. Overall pedal feel still depends on pad condition, fluid, caliper stiffness, cooling and operating temperature.
Rust-Free Rotor Surface
Ceramic discs cannot flash-rust. After rain, a wash, or weeks of parking, the rotor face behind your open-spoke wheels stays clean — no orange ring on a freshly detailed car.
Long Street-Service Life
In normal road use with matched pads and correct bedding, carbon-ceramic friction surfaces are designed for low wear. Actual service life depends on mileage, contamination, pad choice, heat cycles and driving use.
Low Visible Dust
Matched StopFlex pads are selected for low visible dust on the ceramic friction surface. Actual wheel dust still varies with pad choice, traffic, temperature, bedding and driving intensity.
Premium Ceramic-Glaze Finish
StopFlex's proprietary coating gives the disc a bright ceramic-glaze surface with subtle texture — the factory carbon-ceramic look, clearly visible through open wheel designs.
Winter & Cold-Weather Braking
Winter use is possible, but cold-start behavior should be treated honestly: ceramic friction can have less initial bite before temperature builds. StopFlex tunes the matched pad/coating combination for cold response; keep extra distance on the coldest first stops and select a Street Spec for severe climates.
Caliper Overview
Front Caliper
Choose from Brembo V6 / GT6 / GTS6 6-Piston Caliper Options with the supplied 380 mm front rotor. The selected V6, GT6, or GTS6 mapping is specified as part of the bespoke build.
Rear Caliper
Rear Brembo V4 / GT4 / GTS4 4-Piston Caliper Options are supplied with a 355 mm or 380 mm rear rotor, according to the selected configuration.
Choose Your Rotor: Short-Fiber Street to Long-Fiber Motorsport
Left to right is ascending duty. Short-Fiber Street Spec keeps carbon-ceramic benefits at a lower price for street use only; the Long-Fiber Street, Track-Day, and Motorsport specs add continuous-fiber strength and thermal durability for everything from daily premium builds to race weekends.
Short-Fiber Street Spec
Chopped short-fiber carbon-ceramic body, ceramic coating, cross-drilled face.
Choose this for street-only use when purchase price matters most. It keeps the carbon-ceramic friction surface and coated finish, but it is not specified for track sessions.
Long-Fiber Street Spec
Continuous long-fiber body, ceramic coating, cross-drilled face, large cooling channels.
Choose this for daily and fast-road use when you want the long-fiber construction without moving to a track-focused face and cooling specification.
Long-Fiber Track-Day Spec
Continuous long-fiber body, ceramic coating, blank face, honeycomb cooling channels.
Choose this for repeated fast-road or track-day braking where thermal duty matters more than the drilled street appearance. High-temperature fluid and appropriate cooling still matter.
Long-Fiber Motorsport Spec
Continuous long-fiber body, uncoated blank face, honeycomb cooling channels.
Choose this for competition-focused use with the corresponding pad, fluid, cooling and warm-up strategy. It is not the default recommendation for a street-driven car.
Heat Management Note
Carbon ceramic rotors tolerate extreme surface temperature, but they do not remove every heat-management requirement. During repeated hard stops, heat still soaks 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.
Get Your Fitment Confirmed
Send the exact year, model, trim, current rotor sizes, caliper type, and wheel details before ordering. StopFlex confirms the supplied configuration before production and requests VIN/build data when needed.
FAQ
Does this kit fit every 2023-2026+ BMW i7 (G70)?
This kit is for the 2023-2026+ BMW i7 (G70) only, with the final build set after exact model and trim confirmation. It is not a chassis-wide assumed fitment: bracket design, rotor-hat offset, and caliper mounting must be specified for the confirmed vehicle, even where another trim shares the G70 platform.
Will my factory wheels clear the 380 mm front setup?
The 380 mm maximum rotor configuration carries a 19-inch minimum wheel requirement in the fitment chart. Wheel diameter alone is not enough: spoke profile and offset still require physical clearance confirmation before the build is released.
Which carbon-ceramic rotor specification should I choose?
Short-Fiber Street Spec is the lower-cost, street-only choice. Long-Fiber Street, Track-Day, and Motorsport use long-fiber construction for progressively higher heat and duty requirements. Choose the rotor around intended use, then confirm the final front 380 mm and rear 355 mm or 380 mm configuration with StopFlex.
What should I expect in winter or on the first cold stops?
An untuned cold carbon-ceramic disc can have less initial bite than cold iron. StopFlex specifies a matched pad compound and disc coating to reduce that cold-start gap, but the first stops in the coldest conditions still deserve extra margin. Do not expect identical summer and winter response.
More Contact Information
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