2019-2025 Audi RS6 (C8) Carbon Ceramic Big Brake Kit — Akebono 9N Audi RS 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 RS 6-Piston (9N) Caliper / 400mm | TTSPORT EP4 4-Piston Forged Caliper integrated with EPB / 380mm | 20" |
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 400 mm rotor sets the minimum wheel size at 20" — 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 RS 6-Piston (9N) Caliper OE / Part No.: L 4N0-615-107BD · R 4NO-615-108BD |
| Front CCB rotors | 400mm |
| 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
Any kit order can be personalized: custom caliper colors, a custom caliper logo, and custom rotor hat colors, so the hardware behind your wheels matches the rest of the build.
- Custom caliper color
- Custom caliper logo
- Custom rotor hat color
Why Carbon Ceramic — and Why StopFlex
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.
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.
Winter & Cold-Weather Braking
Winter question, straight answer: untuned ceramic discs bite less when cold. StopFlex optimized the pad compound and the rotor's ceramic coating for cold operation, so cold-start braking in winter feels very close to warm-weather braking. Extra following distance on freezing first stops is still smart; severe-winter daily cars should run Street Spec.
Caliper Overview
Front Caliper
The front caliper is the Akebono OEM Audi RS 6-Piston (9N) unit — the same monobloc caliper Audi specifies for the C8 RS6 ceramic package, with six pistons for even pad loading and consistent pedal feel over a 400mm rotor. It's genuine OE hardware, not a copy.
Rear Caliper
The rear is the TTSPORT EP4 4-Piston Forged Caliper with integrated EPB. It runs four 28mm hydraulic service pistons plus a dedicated 27mm electronic parking-brake actuator, so your car keeps its factory EPB function while gaining real rear-axle thermal capacity on the 380mm rotor. The two-piece forged-aluminum body weighs about 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
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
Will this fit my exact RS6 C8, or is it a generic C8 kit?
It's engineered for your confirmed RS6 (C8) trim, not assumed from the platform. We match the brackets, rotor-hat offsets, and caliper mounting to your specific car's front uprights, hub geometry, and wheel ET before anything ships. The RS6 uses different front knuckle and clearance geometry than lesser C8 A6/S6 models, so we build to your VIN-confirmed spec rather than making a platform-wide bolt-on claim.
How do carbon ceramic brakes behave on a cold winter morning?
A cold, untuned carbon-ceramic disc bites less than cold iron on the first stops — that's normal physics, not a defect. We've tuned both the pad compound and the disc's ceramic coating specifically for cold starts, so cold-car braking feel now comes very close to summer feel. On the coldest first stops of the day, leave a little extra following distance until the system is up to temperature.
What wheels do I need to clear the 400mm front rotor?
The 400mm front rotor requires a minimum 20-inch wheel; anything under 20 inches will not clear the caliper and rotor. Spoke clearance also matters, so send us your wheel details during fitment confirmation. The rear TTSPORT EP4 with the 380mm rotor needs at least an 18-inch wheel.
Do I keep my factory electronic parking brake?
Yes. The RS6 C8 uses an electronic parking brake, and the rear TTSPORT EP4 caliper includes a dedicated EPB actuator piston that preserves full factory parking-brake operation. You get OE EPB convenience — auto-hold, hill-hold, and dash control all work as before — plus real rear-axle thermal capacity on the 380mm carbon-ceramic rotor.
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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