2019-2025 Audi Q3 / RS Q3 (F3) 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.
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2019-2025 Audi Q3 / RS Q3 (F3) CCB Big Brake Kit — Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper Front + TTSPORT EP4 4-Piston Caliper with EPB Rear Setup
This StopFlex kit is for F3 Audi Q3 and RS Q3 owners who have outgrown the factory brake package because of heat, dust, rotor wear, or the visual gap behind 19-inch and larger wheels. The front axle uses a Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper over a 380mm carbon-ceramic rotor, while the rear is matched with a TTSPORT EP4 4-Piston Caliper with EPB and 380mm carbon-ceramic rotor. Each kit is engineered around the customer’s exact Q3 or RS Q3 trim so the bracket geometry, rotor-hat offset, and caliper position match the car rather than assuming every F3 variant shares the same brake mounting geometry.
- 380mm front and rear carbon-ceramic rotors require 19-inch or larger wheels on the 2019-2025 Audi Q3 / RS Q3 F3; spoke clearance must be confirmed before production.
- The front upgrade is built around the exact Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper, giving the F3 Q3 platform a larger fixed-caliper front package than the factory sliding-caliper setup on standard Q3 trims.
- The rear TTSPORT EP4 4-Piston Caliper with EPB keeps electronic parking-brake functionality while adding rear-axle thermal capacity to match the 380mm front upgrade.
Fitment Hard Lines
| Field | Specification |
|---|---|
| Vehicle | Audi Q3 / RS Q3 (F3) |
| Model years | 2019-2025 |
| 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 axle uses the Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper, a six-piston fixed caliper selected for higher pad support, stronger clamping distribution, and a more consistent pedal than a smaller sliding-caliper layout. Its OEM Audi RS provenance matters because the caliper is derived from a production performance application rather than an unproven cosmetic casting. StopFlex mounts it with trim-specific brackets and rotor-hat offsets matched to the confirmed F3 Q3 or RS Q3 configuration.
Rear Caliper (Balance)
The rear axle uses the TTSPORT EP4 4-Piston Caliper with EPB, contributing real rear hydraulic braking instead of leaving the rear axle undersized behind a 380mm front upgrade. Its dedicated EPB actuator preserves the factory electronic parking-brake function while the four hydraulic service pistons support rear stability under hard braking.
Front & rear, engineered together: This kit is engineered as a front-and-rear system so the 380mm carbon-ceramic rotors, Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper, and TTSPORT EP4 rear EPB calipers work as a matched package rather than a front-only conversion that leaves rear thermal capacity behind. The EP4 uses four hydraulic service pistons plus one EPB actuator piston, with two-piece heat-insulated pistons, dust boots, a forged-aluminum body, high-temperature gloss coating, and rear-axle packaging chosen around rotor size and wheel 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. |
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 fit my exact 2019-2025 Audi Q3 or RS Q3 F3?
Fitment is confirmed per exact trim, not assumed from the F3 chassis code. StopFlex matches the brackets, 380mm rotor-hat offsets, and caliper mounting to your specific Q3 or RS Q3 because standard and performance variants can differ in upright, hub, and wheel-clearance geometry.
What wheel size do I need for the 380mm setup?
The 380mm rotors require 19-inch or larger wheels. Wheel diameter alone is not enough; inner barrel shape and spoke clearance must also clear the Genuine Akebono OEM Audi RS 6-Piston (8N) Caliper and rear TTSPORT EP4 EPB caliper.
Will the electronic parking brake still work?
Yes. This kit uses the TTSPORT EP4 4-Piston Caliper with EPB at the rear, which has hydraulic service pistons for braking and a dedicated EPB actuator so the Audi Q3 / RS Q3 F3 keeps electronic parking-brake function.
Why choose carbon-ceramic instead of another iron big-brake kit?
Carbon-ceramic rotors reduce brake dust, resist heat fade, and cut rotating unsprung mass compared with an equivalent iron rotor package. On the Q3 / RS Q3 F3, that matters when adding 380mm rotors because the goal is more thermal capacity without making the front axle feel unnecessarily heavy.
Need Fitment Confirmation?
Send the exact vehicle details, current rotor sizes, and caliper type before ordering.
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