AP Racing CP9668 Front 6-Piston Big Brake Kit
- AP Racing
- Front
- 6-piston
- Track
- Circuit Race Car
- Price on request
Tell us your car and wheels. We reply within one business day with a price, or with any questions we need answered first.
- Complete AP Racing kit — everything for one axle
- Checked against your car before it ships
- Warranty & returns
- Installation help
- Built to order — ships in about 15 business days
About this kit
A complete front big brake kit for the Audi A3 8L1, Audi A3 8P1, Audi A3 8V1 and more. It uses two AP Racing CP9668 6-piston calipers and a pair of two-piece rotors (378 mm), plus pads, braided lines and mounting hardware.
We match the mounting brackets to your car. You'll need at least 19-inch wheels with enough room for the caliper. Not sure? Send us your wheel details.
Caliper finish: Plated.
The price depends on your car and the options you pick. Request a quote and we'll email you a price. Built to order; it ships in about 15 business days.
Fits these cars
- Audi A3 8L1
- Audi A3 8P1
- Audi A3 8V1
- Audi A3 Cabriolet 8P7
- Audi A3 Cabriolet 8V7
- Audi A3 Limousine 8VS
- Audi A3 Sportback 48V 8YA
- Audi A3 Sportback 8L1
- Audi A3 Sportback 8PA
- Audi A3 Sportback 8VA
- Audi A3 Sportback 8VF
- Audi A3 Sportback 8VS
- Audi A3 Sportback 8Y
- Audi A3 Sportback e-tron 8VA
- Audi A3L Limousine 8Y
- Audi Q2L MQB
- Audi Q2L e-tron MQB
- Audi Q3 A5(8U)
- Audi Q3 MQB(F3)
- Audi Q3 Sportback MQB(F3)
- Audi S3 8L
- Audi S3 8P
- Audi S3 8VF
- Audi S3 Limousine 8VS
- Audi S3 Limousine 8Y
- Audi S3 Sportback 8Y
- Audi S4 B5(8D)
- Audi TT Coupe 8J
- Audi TT Coupe 8S
- Audi TT RS Coupe 8S
- Audi TTS Coupe 8J
- Audi TTS Coupe 8S
- BMW 225L G42
- BMW 225i Coupe G42
- BMW 320Li G28
- BMW 320i G20
- BMW 325Li G28
- BMW 325Li xDrive G28
- BMW 325i G20
- BMW 330Li G28
- BMW 330Li xDrive G28
- BMW 330i G20
- BMW 425i Convertible G23
- BMW 425i Convertible G23 LCI
- BMW 425i Coupe G22
- BMW 425i Gran Coupe G26
- BMW 430i Convertible G23
- BMW 430i Convertible G23 LCI
- BMW 430i Coupe G22
- BMW 430i Gran Coupe G26
Kits are matched to the cars listed by make, model and years. Wheels, hubs and trim levels can still differ, so check your car and wheels before you order, or ask us.
Car not listed? Ask us →Specifications
| Brand | AP Racing |
|---|---|
| Part type | Big Brake Kit |
| Axle position | Front |
| Piston count | 6 |
| Caliper mounting | Vehicle-specific bracket mount |
| Rotor Material | High-Carbon Steel |
| Rotor Size | Ø378 × 36 mm |
| Caliper Color | Plated |
| Minimum wheel size | 19" |
| Pad compound (included) | M-05 |
| Caliper material | Forged aluminum alloy |
| Caliper bracket | High carbon steel, CNC-machined |
| Rotor construction | Two-piece rotor assembly |
| Rotor hat | High-strength aluminum alloy, CNC machined |
| Rotor face pattern | Curved slot |
| Brake lines | Three-layer reinforced construction, PTFE inner liner / SUS304 stainless-steel braid / PVC protective outer sheath |
| Intended use | Track |
| Vehicle class | Circuit Race Car |
| SKU | AP-CP9668-CI-378X36-PLT |
| Lead time (approx.) | 15 business days |
Brake pad compounds
| Compound | Intended use | Rotor | Max temp | Avg μ |
|---|---|---|---|---|
| M-05 · TRACK included | Track — sprint racing, time attack and hard track days | High-Carbon Steel | 750 °C | 0.45 |
| M-05+ · RALLY | Rally and endurance — long sessions and repeated heat cycles | High-Carbon Steel | 700 °C | 0.43 |
Pad compound is matched to the rotor material you select. Iron-compatible pads must not be fitted to carbon-ceramic rotors, or the other way round.
What's in the box
- Brake calipers × 2
- Brake pads (one axle set) × 4
- Brake rotors (two-piece assembly with hats) × 2
- Stainless-steel braided brake lines × 2
- Vehicle-specific caliper mounting brackets × 2
- Mounting hardware × 1 set
About the brand
AP Racing
British brake and clutch specialist from Coventry, founded 1968, with one of the longest records in professional motorsport. CP-series calipers are the basis of its road-going big brake kits.
All AP Racing kits →Common questions
Will it fit my wheels?
Big calipers need room inside the wheel. Check the minimum wheel size in the specifications. If you're not sure, send us your wheel make and size and we'll check.
Do I need new brake lines or fluid?
Braided lines come with the kit. You'll need fresh DOT 4 fluid and a full bleed after fitting.
Can I fit it myself?
If you're used to brake work and have a torque wrench, yes. If not, have a workshop fit it. Our installation page covers the basic steps and bed-in.
Similar kits
Not sure what fits?
Send us your car and wheels. We'll tell you what fits.
Year, make, model, wheel size, and whether it's for the street or the track. We reply by email within one business day.