2019-2026+ Audi RS Q8 / SQ8 / Q8 (4M) Carbon Ceramic Brake Kit
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
2019-2026+ Audi RS Q8 / SQ8 / Q8 (4M) Carbon Ceramic Brake Kit — OEM-Size Replacement
The 4M Audi RS Q8, SQ8, and Q8 put SUV mass into large front brake packages, so the right carbon-ceramic replacement depends on matching the factory rotor and caliper—not just the badge. This StopFlex OEM-size kit replaces the listed 420mm or 440mm RS Q8 front setup, 400mm SQ8 front setup, or 350mm/375mm Q8 front setup with carbon-ceramic rotors, matched pads, hats, and floating hardware. The payoff is higher heat stability under repeated stops, lower brake dust on open Audi wheels, and reduced rotating unsprung mass while retaining the factory caliper architecture when the rotor size matches.
- Built only for the listed 4M brake packages: RS Q8 420mm or 440mm carbon-ceramic front with 370mm rear, SQ8 400mm front with 350mm rear, and Q8 350mm or 375mm front with 350mm rear.
- OEM-size rotor geometry is intended to work with the matching factory caliper position, hat offset, and floating hardware rather than converting the 4M chassis to a different brake diameter.
- Carbon-ceramic friction surfaces cut the iron-rotor dust that quickly coats large RS Q8, SQ8, and Q8 wheels and hold heat more consistently during repeated highway, mountain, or occasional track braking.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | Audi RS Q8 / SQ8 / Q8 (4M) |
| Model years | 2019-2026+ |
| Front rotor reference | RS Q8: 420mm, 440mm (CCB); SQ8: 400mm; Q8: 350mm, 375mm |
| Rear rotor reference | RS Q8: 370mm; SQ8: 350mm; Q8: 350mm |
| Page type | OEM-size carbon ceramic replacement |
| Minimum wheel size | 21" (for the 420 mm rotor) |
For OEM replacement orders, StopFlex builds around the factory rotor specification shown for this vehicle. Front floating-caliper setups require manual review before production. If the car uses aftermarket calipers such as Brembo, AP Racing, Alcon, or Wilwood, the order can still be built, but the exact caliper model, pad shape, and rotor dimensions must be confirmed before production.
This setup uses a 420 mm rotor, so the minimum wheel size is 21". Wheels under 21" will not clear the caliper and rotor, and spoke profile and offset affect clearance too — confirm your exact wheels before ordering.
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.
Custom Rotor Hat Color
Every StopFlex OEM replacement order can be built with a custom rotor hat color, giving the carbon ceramic rotor package a cleaner match with the wheel, body color, and overall build style.
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 |
|---|---|
| CCB rotors | Full-car set by default |
| CCB brake pads | Matched for StopFlex carbon ceramic rotors |
| 7075 aluminum floating rotor hats | Vehicle-specific fitment |
| Stainless floating hardware | Full-car hardware set |
| Rotor hat color | Custom rotor hat colors are available for every OEM replacement order. |
| Order scope | Default listing is full-car set. Front-only or rear-only orders can be arranged after confirmation. |
FAQ
Will this fit every 2019-2026+ Audi Q8, SQ8, or RS Q8?
No. Compatibility is limited to the exact 4M trim and rotor sizes listed on this page: RS Q8 420mm or 440mm front, SQ8 400mm front, and Q8 350mm or 375mm front, with the corresponding rear rotor sizes. Confirm your current rotor diameter before ordering.
Does the kit keep the factory calipers and electronic parking brake?
This is an OEM-size replacement kit, so it is designed around the matching factory calipers and rear brake layout for the listed 4M applications. When the rear rotor size matches the vehicle, the factory EPB/auto-hold functions remain tied to the original rear caliper system.
Why replace the OEM iron brakes with carbon-ceramic on an SQ8 or Q8?
The SQ8’s 400mm front iron brakes and Q8’s 350mm or 375mm front iron brakes work hard on a heavy SUV, especially in repeated high-speed stops. Carbon-ceramic rotors reduce dust, reduce rotating unsprung mass, and maintain more stable friction temperature than conventional iron rotors.
What should I confirm before placing the order?
Verify model year, trim, front and rear rotor diameters, whether the RS Q8 has 420mm iron-size or 440mm CCB-size front rotors, wheel clearance, and any previous brake conversions. A VIN and rotor measurement help prevent ordering the wrong 4M brake package.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
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