2005-2008 Audi A4 / S4 / RS4 (B7) CCB Big Brake Kit | Akebono 8N 6-Piston
Official Warranty: 1‑year free replacement for quality defects or coating issues under normal (non-track) use.
We Ship Worldwide
2005-2008 Audi A4 / S4 / RS4 (B7) CCB Big Brake Kit — Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper Front + TTSPORT EP4 4-Piston Caliper with EPB Rear Setup
B7 A4, S4, and RS4 owners usually arrive here after asking more from the factory brakes than street iron rotors and single-trim assumptions can handle: heat, dust, repeated high-speed stops, and wheel-clearance uncertainty. This StopFlex kit uses 380mm carbon-ceramic rotors with a Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper up front and TTSPORT EP4 rear calipers, giving the car higher thermal capacity, lower rotor mass, and cleaner open-wheel use. Each kit is built around the confirmed A4, S4, or RS4 trim, with brackets and hat offsets matched to that car instead of treating every B7 upright and wheel package as identical.
- 380mm front and rear carbon-ceramic rotors require 19-inch or larger wheels; spoke clearance is checked because caliper face clearance can fail even when wheel diameter is adequate.
- The front axle uses the Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper, selected for a B7 upgrade that needs six-piston load distribution over a large carbon-ceramic rotor.
- A4, S4, and RS4 share the B7 name but can differ in brake mounting, hub geometry, and wheel offset, so StopFlex builds the brackets and rotor hats for the confirmed trim.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | Audi A4 / S4 / RS4 (B7) |
| Model years | 2005-2008 |
| Front setup | Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper / 380mm |
| Rear setup | TTSPORT EP4 4-Piston Caliper with EPB / 380mm |
| Page type | Complete CCB kit upgrade |
| Minimum wheel size | 19" (for the 380 mm front rotor) |
Every StopFlex kit is bespoke-engineered for your exact model and trim — the brackets, rotor-hat offsets, and caliper mounting are matched to your specific car, not assumed from the platform. This matters because trims that share a chassis name can differ mechanically: a pure M or performance variant often carries different front knuckles/uprights, hub geometry, and wheel axial (ET) clearance than the standard models in the same family, so a bracket and hat offset that bolt onto one are not the same parts that fit the other. StopFlex supplies the calipers, pads, rotor hats, floating hardware, and brake lines as a matched system built to your confirmed trim. Cars with modified knuckles, modified uprights, or non-factory suspension mounting points must be reviewed before ordering and are not treated as direct-fit.
This setup uses a 380 mm front rotor, so the minimum wheel size is 19". Wheels under 19" will not clear the caliper and rotor, and spoke profile and offset affect clearance too — 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 |
Caliper Overview — Front & Rear Balance
Front Caliper (Primary Upgrade)
The Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper is the primary front upgrade in this kit, using six pistons to spread clamping load across the pad for firmer pedal response and more even pressure on the 380mm carbon-ceramic rotor. Its credibility comes from being a genuine OEM Audi RS-derived Akebono caliper rather than an anonymous universal racing caliper. StopFlex pairs it with vehicle-specific mounts, hats, pads, lines, and hardware for the confirmed B7 A4, S4, or RS4 trim.
Rear Caliper (Balance)
The TTSPORT EP4 4-Piston Caliper with EPB adds real rear-axle brake capacity so the 380mm rear rotor contributes to stability instead of leaving the front axle to do nearly all the thermal work. The EP4 architecture uses four hydraulic service pistons plus a dedicated EPB actuator piston, allowing the rear package to retain electronic parking-brake function where that function is part of the installed system.
Front & rear, engineered together: StopFlex engineers the front and rear rotor hats, caliper brackets, and pad package as one system so the B7 does not receive a front-heavy upgrade with rear heat capacity left behind. The TTSPORT EP4 shares the EP4S piston specification concept, including four hydraulic service pistons and a separate EPB actuator piston, while StopFlex selects the rear configuration around rotor size and wheel/spoke clearance.
Make It Yours — Color & Logo Customization
Every StopFlex kit-upgrade order can be finished with custom caliper colors, a custom caliper logo, and custom rotor hat colors, so the brake package matches your exact build instead of a fixed off-the-shelf look.
- Custom caliper color
- Custom caliper logo
- Custom rotor hat color
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.
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 |
|---|---|
| Front calipers | Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper |
| Front CCB rotors | 380mm |
| Rear calipers | TTSPORT EP4 4-Piston Caliper with EPB |
| Rear CCB rotors | 380mm |
| CCB brake pads | Matched for the supplied StopFlex carbon ceramic rotors |
| Rotor hats and floating hardware | Vehicle-specific hardware package |
| Brake lines | Included for complete kit-upgrade orders |
| Color customization | Custom caliper colors, a custom caliper logo, and custom rotor hat colors are available for every kit-upgrade order. |
| 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. |
FAQ
Will this kit fit every 2005-2008 Audi A4, S4, and RS4 B7 the same way?
No. StopFlex does not treat the B7 chassis name as a universal bolt-on fitment. A4, S4, and RS4 trims can differ in upright, hub, brake, and wheel-offset details, so the brackets, rotor-hat offsets, and caliper mounting are built for your confirmed exact trim.
What wheels are required for the 380mm carbon-ceramic rotors?
The largest rotor in this kit is 380mm, so wheels under 19 inches will not clear it. StopFlex also checks spoke clearance because the Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper can conflict with wheel faces even when barrel diameter is sufficient.
Will the electronic parking brake still work on my B7?
The 2005-2008 Audi B7 A4/S4/RS4 did not leave the factory with an electronic parking brake; it uses a manual cable handbrake. The TTSPORT EP4 rear caliper includes EPB capability for platforms that require it, but B7 parking-brake integration must be confirmed against the exact rear setup before production.
Why move this B7 from iron rotors to carbon-ceramic rotors?
Carbon-ceramic rotors reduce rotating and unsprung mass, produce far less visible brake dust, and tolerate repeated heat cycles better than conventional iron rotors in hard street or track use. On this kit, the 380mm rotor size also increases thermal capacity while the front six-piston Akebono caliper improves pad pressure distribution.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
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.
Get in Touch
Business Hours
Monday – Saturday, 9:30 AM – 6:30 PM (GMT +8)
Current Time:
Follow Us
- Choosing a selection results in a full page refresh.