Alcon CR6420 "Motorsport" 6-Piston Front Brake Calipers (Pair)
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Alcon CR6420 "Motorsport" 6-Piston Front Brake Calipers (Pair) - 27.0/31.8/38.1mm Pistons - Universal
The Alcon CR6420 is a billet endurance caliper for GT and touring car racing. It is a 6-piston radial-mount design machined from billet aerospace-grade aluminium, with staggered 27.0 / 31.8 / 38.1mm stainless steel pistons and a thick 25mm pad for long stints. 2kg anti-knockback springs, hard stainless wear plates and a bolted pad retainer keep it stiff and consistent.
It is also offered as a caliper option in our Alcon big brake kits.
Note: Sold as a pair. Needs brackets and rotors to suit your car. Suits 355–390mm rotors, 34–36mm thick. Installation by a professional is recommended.
Features
- Billet aerospace-grade aluminium body, 6-piston radial mount
- Staggered stainless steel pistons: 27.0 / 31.8 / 38.1mm
- 2kg anti-knockback springs
- Hard stainless steel wear plates
- Bolted pad retainer (remove it to change pads)
- Alcon 4489 pad shape, 25mm thick, in 50.8mm or 54.0mm depth
- 3/8-24 UNF (-3) female fluid inlet
Need help choosing the right setup? Contact our team at sales@chicaneaustralia.com.au.
Contents
- 2 x Alcon CR6420 6-piston calipers
No instructions available for this product.
Pad Shape
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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