2021-2026+ Polestar 2 Carbon Ceramic 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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Will This Fit My Car?
Full Upgrade CCB Big Brake Kits (With Calipers) for the 2021-2026+ Polestar 2. This page's exact brake setup:
| Model Years | Front Setup | Rear Setup | Min. Wheel Size |
|---|---|---|---|
| 2021-2026+ |
Option 1: Brembo OEM Cadillac CTS-V 6-Piston Caliper — 380 mm rotor Option 2: Brembo GT | M6 6-Piston Caliper — 380 mm rotor Option 3: Brembo GT | S6 6-Piston Caliper — 380 mm rotor |
Option 1: Brembo OEM Cadillac CTS-V 4-Piston Caliper — 380 mm rotor Option 2: Brembo GT | M4 4-Piston Caliper — 380 mm rotor Option 3: Brembo GT | S4 4-Piston Caliper — 380 mm rotor |
19" |
Every StopFlex kit is bespoke-engineered for your exact model and trim — brackets, rotor-hat offsets, and caliper mounting are matched to your specific car, never assumed from the platform. Trims that share a chassis name can differ mechanically: a pure performance variant often carries different knuckles, hub geometry, and wheel ET clearance than the standard models, so parts that bolt onto one are not the parts that fit the other. Calipers, pads, rotor hats, floating hardware, and brake lines ship as one matched system built to your confirmed trim. Modified knuckles, uprights, or non-factory suspension mounting points must be reviewed 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 — 380 mm rotor OE / Part No.: L 172-2523 · R 172-2524 Option 2: Brembo GT | M4 4-Piston Caliper — 380 mm rotor Option 3: Brembo GT | S4 4-Piston Caliper — 380 mm rotor |
| 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
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 carbon-ceramic rotor weighs roughly half of the equivalent iron disc. Less rotating, unsprung mass lets the suspension follow broken pavement more cleanly and makes steering response noticeably sharper.
High-Temperature Stability
The carbon-silicon-carbide friction matrix keeps working at temperatures that push iron rotors into heavy fade, so the tenth hard stop feels like the first — same pedal travel, same bite point.
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, one StopFlex CCB rotor set is engineered to outlast several sets of iron replacement rotors, recovering part of the up-front cost.
Low Visible Dust
Matched with StopFlex pads, the system sheds a fraction of the dust an iron rotor and pad combination throws. Wheels stay clean for weeks of driving instead of days.
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.
Continuous Fiber Construction
StopFlex discs are built with long continuous carbon fiber instead of chopped short fiber. Continuous strands carry load across the whole rotor body, raising strength and thermal durability under heat cycles.
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.
Winter & Cold-Weather Braking
Cold facts first: an untuned ceramic disc bites less than iron on a freezing morning — physics, not a defect. StopFlex tuned both the pad compound and the disc's ceramic coating for cold starts, so winter cold-car braking now feels very close to summer. Leave extra margin on the very coldest first stops; severe-climate daily drivers should build Street Spec.
Caliper Overview
Front Caliper
The front uses the Brembo GT6 six-piston caliper on a 380 mm carbon-ceramic rotor, and you can also choose the V6 (Brembo OEM Cadillac CTS-V six-piston) or GTS6 (Brembo GT|S6) at the same 380 mm size. All three give a firm, consistent pedal that holds up after repeated hard stops on a heavy EV.
Rear Caliper
The rear pairs with a Brembo four-piston caliper — V4 (Brembo OEM Cadillac CTS-V), GT4 (Brembo GT|M4), or GTS4 (Brembo GT|S4) — on a 380 mm rotor to add real thermal capacity at the back axle. We match the rear brackets and hats to your confirmed trim and retain the factory electronic parking brake function.
Choose Your Rotor: Street, Track-Day, or Motorsport
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.
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
Before ordering, tell us the exact vehicle, current rotor sizes, and caliper type. Nothing goes to production until the build is confirmed against your VIN-level configuration.
FAQ
How does this kit behave in winter and on the first cold stops?
A cold carbon-ceramic disc bites a little less than cold iron when it is untuned — that is basic friction physics, not a defect. StopFlex has optimized both the pad compound and the disc's ceramic coating for cold starts, so cold-car braking on your Polestar 2 now feels very close to a warm summer stop. It's still smart to leave a bit of extra following distance on the first stop or two on the coldest mornings.
Will this fit my exact Polestar 2 trim?
Yes, once we confirm your trim. Trims that share the Polestar 2 name can differ in front upright and hub geometry and wheel offset, so we build the brackets, rotor-hat offsets, and caliper mounting for your specific confirmed trim. This is bespoke per-car, not a platform-wide bolt-on assumption.
What wheels do I need to clear these brakes?
The front and rear rotors are 380 mm, so you need a minimum 19-inch wheel. Wheels under 19 inches will not clear the caliper and rotor, and spoke clearance matters too — send us your wheel specs and we'll verify fit before you order.
Does the kit keep my electronic parking brake working?
Yes. The Polestar 2 uses a factory electronic parking brake, and the rear V4/GT4/GTS4 calipers are set up to retain that EPB function so your parking brake and Auto Hold work exactly as before.
More Contact Information
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