2013-2020 Audi A3 / S3 / RS3 (8V) 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.
2013-2020 Audi A3 / S3 / RS3 (8V) CCB Big Brake Kit — Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper Front + TTSPORT EP4 4-Piston Caliper with EPB Rear Setup
The 8V Audi A3, S3, and RS3 owner usually shops carbon-ceramic brakes after repeated heat cycling, brake dust on open wheels, or the need to reduce rotating mass without giving up a full-size brake package. This StopFlex kit pairs a 380mm front carbon-ceramic rotor with the Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper, then matches the rear with a 380mm carbon-ceramic rotor and TTSPORT EP4 4-Piston Caliper with EPB. Each kit is built around the confirmed A3, S3, or RS3 trim so the bracket geometry, rotor-hat offset, and caliper position are not assumed from the 8V chassis name.
- 380mm front and rear carbon-ceramic rotors require 19-inch or larger wheels; spoke clearance is checked because RS3, S3, and A3 wheel offsets are not interchangeable by assumption.
- The front axle uses the Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper, giving this 8V kit an OEM-derived six-piston front architecture instead of a generic universal caliper.
- The rear axle uses the TTSPORT EP4 4-Piston Caliper with EPB so the A3 / S3 / RS3 8V retains electronic parking-brake function while adding rear carbon-ceramic thermal capacity.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | Audi A3 / S3 / RS3 (8V) |
| Model years | 2013-2020 |
| 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 front upgrade uses the exact Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper, a six-piston fixed caliper selected to spread pad pressure evenly across the 380mm carbon-ceramic rotor. Its OEM Audi RS provenance matters on an 8V A3 / S3 / RS3 build because the caliper architecture was developed for high-output Audi braking loads rather than adapted from a cosmetic universal kit. StopFlex matches the caliper mount and rotor-hat offset to the confirmed trim so pedal feel and pad contact are built around the customer’s actual front knuckle and hub geometry.
Rear Caliper (Balance)
The rear upgrade uses the TTSPORT EP4 4-Piston Caliper with EPB to add real rear-axle brake capacity while preserving the factory electronic parking brake. Its four hydraulic service pistons support rear brake stability under load, and its dedicated EPB actuator keeps OE parking-brake convenience.
Front & rear, engineered together: This kit is engineered as a front-and-rear system so the 380mm front rotor, 380mm rear rotor, six-piston front caliper, and EP4 rear caliper are matched for brake balance instead of pairing a large front conversion with an undersized rear axle. The EP4 shares the EP4S rear big-brake architecture: four hydraulic service pistons plus one dedicated EPB actuator piston, two-piece heat-insulated pistons with dust boots, a forged-aluminum body, and a design intended for modern platforms that require electronic parking-brake retention.
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. |
EPB & Rear Caliper Options
This vehicle leaves the factory with an electronic parking brake (EPB) built into the rear brake, so the rear of the kit is built to keep that EPB working. There are two rear paths. The first is a dual-caliper rear: a main performance caliper handles braking while a dedicated EPB actuator caliper is retained alongside it, so the electronic parking brake, auto-hold, and hill-start assist all keep working; on this path the rear performance caliper can be the TTSPORT EP4 / EP4S 4-piston caliper. The second is an EPB-integrated caliper, a single rear caliper with the electromechanical parking-brake motor built in for a cleaner install with fewer parts behind the wheel; on this path the rear is the TTSPORT EP4 / EP4S 4-piston caliper with integrated EPB. Which path fits best depends on your exact trim and EPB configuration, your budget, your appearance preference, and your wheel size and spoke clearance. Confirm your car's rear-brake configuration with StopFlex before ordering so the correct EPB-compatible rear option is built for your kit.
| Rear option | What it is | Rear caliper | Best when |
|---|---|---|---|
| Dual caliper (EPB retained) | Performance caliper plus a dedicated EPB actuator caliper, both fitted on the rear, so the factory electronic parking brake keeps working. | TTSPORT EP4 / EP4S 4-Piston Caliper | You want guaranteed factory EPB, auto-hold, and hill-start behavior preserved. |
| EPB-integrated caliper | A single rear caliper with the electromechanical parking-brake motor built in, for a cleaner install with fewer parts behind the wheel. | TTSPORT EP4 / EP4S 4-Piston Caliper with integrated EPB | You want a cleaner single-caliper rear with full EPB function. |
TTSPORT EP4S rear caliper specification (the EP4 shares the same engineering, slightly more compact):
| Specification | EP4S |
|---|---|
| Axle position | Rear |
| Piston count | 4 hydraulic + 1 EPB actuator |
| Piston type | Two-piece heat-insulated, dust boots + EPB actuator |
| Piston diameter | 28 mm × 4 / 27 mm × 1 |
| Total piston area | 30.4 cm² per caliper |
| Manufacturing process | Two-piece forged aluminum body |
| Net weight | 4.50 kg per caliper (no pads) |
| Surface finish | High-temperature gloss coating |
| Recommended wheel size | 18 in or larger |
FAQ
Will this StopFlex kit fit my exact A3, S3, or RS3 8V trim?
StopFlex does not treat every 8V as the same brake chassis. Before production, the confirmed model, trim, hub geometry, front knuckle/upright arrangement, rotor-hat offset, caliper bracket, and wheel package are checked so the kit is built for that specific A3, S3, or RS3, not sold as a vague platform-wide bolt-on.
What wheel size do I need for the 380mm carbon-ceramic rotors?
The minimum wheel diameter is 19 inches because this kit uses 380mm rotors. Diameter alone is not enough; inner barrel shape, spoke profile, wheel offset, and the Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper envelope must be verified before the kit is finalized.
Will the electronic parking brake still work?
Yes. The rear setup uses the TTSPORT EP4 4-Piston Caliper with EPB, which uses four hydraulic service pistons for braking and a dedicated EPB actuator piston for the parking brake, so the 8V keeps electronic parking-brake function.
Why choose carbon-ceramic instead of another iron big-brake kit?
On an Audi A3 / S3 / RS3 8V, carbon-ceramic rotors address heat capacity, brake dust, corrosion, and rotating mass in one package. The 380mm rotor size gives the system thermal headroom, while the lower dust output is useful on open 19-inch wheels commonly fitted to S3 and RS3 builds.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
More Contact Information
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