Alcon Calipers Rear
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The Alcon RC4 is a high-performance rear brake caliper designed for street-driven performance vehicles. Built with Alcon’s motorsport expertise and refined for road use, it delivers reliable, balanced braking with features like dust seals for long-term durability.
Constructed from a 2-piece forged aluminium body, the RC4 combines strength with low weight. It features stainless steel pistons in a 31.8mm / 31.8mm configuration to provide balanced clamping force and reduce heat transfer into the brake fluid. With high-friction pads and a generous 66.1cm² pad area, the RC4 ensures strong rear braking while helping manage temperatures and extend pad life.
Designed for fast road cars, the RC4 also includes pin-mounted pads for easy servicing and high-temperature seal materials proven in top-level motorsport.
Key Features:
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Rear caliper – built for high-performance street use
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Stainless steel pistons – 31.8mm / 31.8mm for even pressure distribution
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Dust seals included – for long-term reliability in road environments
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High-friction pads – improve stopping power and brake feel
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Large pad area (66.1cm²) – helps control heat and extend pad life
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Pin-mounted pads – allow for fast and easy pad changes
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2-piece forged aluminium design – lightweight and durable
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Motorsport-grade high-temperature seals – built for demanding conditions
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Disc compatibility: 330–360mm diameter, 28–32mm width
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Wheel fitment: Fits many 18” and larger wheels
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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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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