Alcon PRO-660 DOT 4 High Performance Brake Fluid
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Formulated for the extreme demands of racing, Pro-System PRO-660 brake fluid offers class-leading resistance to boiling and brake fade, ensuring consistent pedal feel under the highest thermal loads. With superior lubricity and stable viscosity, it maintains reliable braking performance through the harshest track conditions.
Packaged in a durable metal container to prevent moisture absorption, PRO-660 offers up to 24 months of shelf life—making it ideal for professional race teams and serious track-day enthusiasts. Fully compatible with all DOT 4 and DOT 3 brake fluids, it exceeds US FMVSS No.116 DOT 4 specifications for maximum confidence under pressure.
Key Features:
- Ultra-high performance DOT 4 brake fluid
- Minimum dry boiling point: 320°C (608°F)
- Minimum wet boiling point: 195°C (383°F)
- Exceptional thermal stability and fade resistance
- Long shelf life with metal can packaging
- Compatible with all DOT 3 and DOT 4 brake fluids
Volume: 500ml
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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