Alcon Front Big Brake Kit
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Upgrade the braking performance of your BMW GXX platform with the Alcon Big Brake Kit.
Engineered for high-powered street cars and weekend track machines, this kit is built to handle spirited driving, tuned builds, and demanding track use. Alcon’s motorsport-proven technology delivers maximum stopping power, reduced fade, improved pedal modulation, and superior thermal management — giving you confidence in every braking zone.
Each kit features lightweight, high-strength calipers paired with larger performance rotors. Depending on the configuration, you may choose Paragon or Alcon rotors — both known for their excellent heat dissipation and durability. This is a true bolt-on upgrade that integrates seamlessly with factory hubs and suspension geometry for hassle-free installation and reliable performance.
Features:
– Enhanced braking for street, track, and high-horsepower builds
– Lightweight aluminium calipers reduce unsprung weight and improve pedal feel
– Larger rotors improve thermal capacity and stopping power
– Includes stainless steel braided lines and high-quality hardware
– Direct bolt-on fit for BMW 3/4/5/6 Series (GXX) and M240i (G42)
Caliper Options
Alcon CAR99 – 6-Piston Caliper
Alcon’s newest billet monobloc caliper, built for maximum rigidity and motorsport-level braking performance.
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Billet aluminium monobloc construction
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Piston sizes: 30.2mm / 34.9mm / 38.1mm (ZG-spec)
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17mm pad thickness
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Dust seals included
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Radial mount
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Rotor range: 355mm–400mm
Alcon CAR70 "RC6" – 6-Piston Caliper
A forged, endurance-focused caliper designed for thermal control and consistent high-load braking.
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2-piece forged aluminium design
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Piston sizes: 27.1mm / 31.8mm / 38.1mm
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Pad area: 117.5cm²
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17mm pad thickness
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Stainless steel staggered pistons for even wear
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Pin-mounted pads for quick changes
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High-temperature motorsport-grade seals
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Rotor range: Ø380–410mm, width 34–36mm
Alcon CAR89 TA6+ – 6-Piston Caliper
Compact and reliable, the TA6+ is ideal for performance-focused front or rear applications.
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Billet aerospace-grade aluminium construction
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Piston sizes: 27.0mm / 31.8mm / 38.1mm
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18mm pad thickness
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Dust seals included
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Radial mount
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Rotor range: 355mm–390mm
Alcon CR6420 – 6-Piston Caliper
A compact, versatile motorsport-grade caliper suitable for rear or lightweight front applications.
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Billet aerospace-grade aluminium construction
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Piston sizes: 27.0mm / 31.8mm / 38.1mm
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25mm pad thickness
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Radial mount
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Rotor range: 362mm–390mm
Brake pads not included – must be purchased separately
Vehicle Compatibility:
– 2018–Present BMW 3 Series (G20 / G21)
– 2020–Present BMW 4 Series (G22 / G23 / G26)
– 2016–Present BMW 5 Series (G30 / G31)
– 2017–Present BMW 6 Series (G32)
– 2022–Present BMW 2 Series M240i (G42)
Contents
2 x Alcon Calipers (CAR99, CAR70 RC6, CAR89 TA6+, or CR6420 depending on kit)
2 x Performance Rotors (Paragon or Alcon)
2 x Rotor Hats
2 x Mounting Brackets
Stainless Steel Brake Lines
New Bolts and Hardware
Installation Instructions
No instructions available for this product.
Alcon Caliper Comparison Guide
Dive into the technical specifications. Compare piston sizing, rotor compatibility, and architectural data across Alcon's purpose-built street, dual-use, and dedicated motorsport calipers.
| Overview |
 CAR97 "MONO6" Full Specs |
 CAR70 "RC6" Full Specs |
 CAR99 Full Specs |
 CAR89 "TA6+" Full Specs |
 CAR89 Motorsport Full Specs |
 CAR89 "Billet" Full Specs |
CR6420 Full Specs |
|---|---|---|---|---|---|---|---|
| Category | Performance Street | Performance Street | Premium Street | Street / Track | Dedicated Track | GT / Touring Car | GT / Touring Car |
| Construction | Monobloc Cast | 2-Piece Forged | Monobloc Billet | Forged Aero | Billet Aero | Monobloc (1-Piece) | Billet Aero |
| Piston Sizing | 30.2 / 34.9 / 38.1mm | 27.1 / 31.8 / 38.1mm | 27.1 / 31.8 / 38.1mm | 27.1 / 31.8 / 38.1mm | 30.2 / 34.9 / 38.1mm | 27.1 / 31.8 / 38.1mm | 27.0 / 31.8 / 38.1mm |
| Overview |
 CAR69 "RC4" Full Specs |
 CAR23 Full Specs |
 CRB343 Full Specs |
 CRB332 Full Specs |
|---|---|---|---|---|
| Category | Performance Street | Dedicated Track | Dedicated Track | Dedicated Track |
| Construction | 2-Piece Forged | Billet Monobloc | Radial Mount | Radial Mount |
| Piston Sizing | 38.1 / 41.3mm | 38.1 / 41.3mm | 38.1 / 41.3mm | 38.1 / 41.3mm |
| Overview |
 CAR98 "MONO4" Full Specs |
CAR69 "RC4" Full Specs |
 CAR49 "TA4+" Full Specs |
|---|---|---|---|
| Category | Performance Street | Performance Street | Street / Track |
| Construction | Monobloc Cast | 2-Piece Forged | Forged Aero |
| Piston Sizing | 31.8 / 31.8mm | 31.8 / 31.8mm | 31.8 / 31.8mm |
| Overview |
 CRR300 Full Specs |
 CRR280 Full Specs |
|---|---|---|
| Category | Dedicated Track | Dedicated Track |
| Construction | Radial Monobloc | Radial Mount |
| Piston Sizing | 28.6 or 34.9mm | 2-Piston |
Caliper Name
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Alcon Caliper Comparison Guide
Dive into the technical specifications. Compare piston sizing, rotor compatibility, and architectural data across Alcon's purpose-built street, dual-use, and dedicated motorsport calipers.
CAR97 "MONO6"
Designed for high-performance street cars with a firm, consistent pedal feel.
CAR70 "RC6"
A versatile 6-piston caliper built for aggressive street driving and light track use.
CAR99
The pinnacle of Alcon's street range. Billet monobloc for maximum structural rigidity.
CAR89 "TA6+"
The ultimate dual-purpose weapon. Built specifically for Time Attack and heavy track sessions.
CAR89 Motorsport
Purpose-built for professional motorsport to deliver even pressure across massive pads.
CAR89 "Billet"
1-piece billet aerospace aluminium body offers massive strength and reduced weight.
CR6420
The definitive choice for endurance GT racing, accommodating ultra-thick 25mm pads.
CAR69 "RC4"
A forged 2-piece front caliper engineered for high-performance street applications.
CAR23
An ultra-lightweight billet monobloc front caliper designed for uncompromised motorsport use.
CRB343
A pure, track-focused front radial mount caliper with differential piston diameters.
CRB332
A dedicated motorsport radial mount front caliper providing incredibly stable brake bias.
CAR98 "MONO4"
A premium 4-piston rear caliper designed to perfectly complement Alcon front upgrades.
CAR69 "RC4"
Equipped with dust seals for long-term road use, ensuring balanced rear braking power.
CAR49 "TA4+"
The definitive rear caliper for dual-purpose track and street cars.
CRR300
A sub-1kg, ultra-compact rear caliper built exclusively for motorsport.
CRR280
A highly robust rear caliper tailored for Saloon and GT racing with fast-change pad wire.
Caliper Name
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