2019-2025 Audi RS6 (C8) Carbon Ceramic Big Brake Kit — Akebono 8N Audi S 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 2019-2025 Audi RS6 (C8). This page's exact brake setup:
| Model Years | Front Setup | Rear Setup | Min. Wheel Size |
|---|---|---|---|
| 2019-2025 | Akebono OEM Audi S 6-Piston (8N) Caliper / 380mm | TTSPORT EP4 4-Piston Forged Caliper integrated with EPB / 380mm | 19" |
Fitment here is bespoke: brackets, hat offsets, and caliper mounting are engineered for your exact model and trim rather than copied across the platform. Two trims with the same chassis code can still differ in knuckles, hub geometry, and wheel ET clearance — which is why we confirm your trim first, then build the matched system of calipers, pads, rotor hats, floating hardware, and lines for it. Modified knuckles, uprights, or non-factory suspension points require 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 | Akebono OEM Audi S 6-Piston (8N) Caliper OE / Part No.: L 8W0-615-107AK · R 8W0-615-108AK |
| Front CCB rotors | 380mm |
| Rear calipers | TTSPORT EP4 4-Piston Forged Caliper integrated with EPB |
| Rear CCB rotors | 380mm |
| 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
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 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.
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 caliper is the Akebono OEM Audi S 6-Piston (8N) monoblock, the same forging Audi uses on its S/RS performance calipers. Six pistons keep clamping even and pedal pressure consistent as the 380mm front rotor loads up under repeated stops on a 2.2-ton RS6.
Rear Caliper
The rear is the TTSPORT EP4 4-Piston Forged Caliper, a two-piece forged-aluminum body built for platforms that still run an electronic parking brake. It uses four 28mm hydraulic service pistons plus one 27mm EPB actuator piston, so the RS6's factory electronic parking brake keeps working while the rear axle gains real thermal capacity; heat-insulated two-piece pistons with dust boots, about 30.4 cm² piston area and roughly 4.50 kg per caliper without pads.
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
Share your year, model, trim, wheel size, current rotor dimensions, and caliper type — every order is verified against your VIN-level configuration before it goes to production.
FAQ
Will this fit my exact RS6 C8 without guessing?
Yes. We build the kit to your confirmed RS6 (C8) trim, not to the platform. Brackets, rotor-hat offsets, and the mounting for the Akebono 8N front caliper are cut for your specific car, since the RS6 and RS6 Performance can differ in knuckle geometry and wheel ET clearance. We confirm your year, trim, and wheel details before anything ships.
Does the kit keep my electronic parking brake working?
It does. The RS6 C8 uses a factory electronic parking brake in the rear calipers, and the TTSPORT EP4 rear caliper has a dedicated 27mm EPB actuator piston alongside its four hydraulic pistons. You keep the OE electronic parking brake and auto-hold functions while gaining rear-axle thermal capacity.
How do these behave in winter and on cold morning drives?
A cold, untuned carbon-ceramic disc bites less than cold iron on the first stop or two, which is normal physics. We tune both the pad compound and the disc's ceramic coating for cold starts, so cold-car feel on the RS6 now comes very close to summer feel. On the coldest first stops, leave a little extra following distance until the system is up to temperature.
What wheels do I need to clear the 380mm rotors?
The 380mm front and rear rotors require a minimum 19-inch wheel on the RS6 C8; anything under 19 inches will not clear. Spoke design matters too, since the front runs the 6-piston Akebono caliper, so send us your wheel specs and we'll verify clearance before you buy.
More Contact Information
We’re here to help! Whether you need expert advice on brake setups, have questions about your order, or just want to share feedback, our team is ready to assist you. Reach out via your preferred channel below, or use the inquiry form.
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