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20+ Years of Alcon Experience. FREE SHIPPING on all Brake Kits (USA) - Open M-F 8-5
20+ Years of Alcon Experience. FREE SHIPPING on all Brake Kits (USA) - Open M-F 8-5

Radi-CAL™ R4 Racing Brake Fluid 0.5 Liter

SKU CP7005
Original price $49.99 USD - Original price $49.99 USD
Original price
$49.99 USD
$49.99 USD - $49.99 USD
Current price $49.99 USD
Lead Time: Average 1-2 Days
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PRODUCT INFORMATION

AP Racing Brake Fluids have been developed specifically for use under the arduous conditions encountered at the highest levels of motorsport.

All AP Racing Brake Fluids are compatible with all hydraulic brake systems designed to conform to S.A.E. J1703 requirements. AP 551 can be used for either competition or road use.

The Radi-CAL™ R4 Fluid has been designed to perform better than any other product at the extremes of heavy duty braking performance in the top levels of racing.

With the highest dry boiling point of any racing brake fluid currently available, at 340°C (644°F), R4 stands alone.

With outstanding resistance to vapour lock / pedal fade under the most exacting conditions. A higher vapour lock point means a firmer brake pedal at the extremes of brake temperature. Enhanced lubricity, means this fluid is an even better lubricant than PRF660 itself a market leader. This helps the life of the metal moving parts of the brake system and increases system efficiency.

Note:
R4 can be mixed with DOT3 and DOT4 racing brake fluids but for maximum product performance the brake system should be
thoroughly purged with R4 fluid.

Designation:
Radi-CAL™ R4

'Typical' Boiling Points.
- New Dry 340°C.
- 'Wet' E.R. 195°C


SKU: CP7005

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Free on all brake kits to the continental USA

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Frequently asked questions on Alcon Brakes

Why buy from Alconkits.com?

Can I buy Alcon Brakes and parts somewhere else?

Yes, some general automotive retailers and online marketplaces may list Alcon brake kits or individual components. However, Alcon brake systems are engineered, vehicle-specific systems, not commodity parts.

When purchased from Alconkits.com, you are buying directly from a specialist Alcon distributor with deep application knowledge, fitment validation experience, and long-term service support. This ensures you receive the correct configuration, pad compound guidance, wheel-clearance assistance, and ongoing support throughout the life of the brakes.

Why should I buy this kit from Alconkits.com instead of a retailer like eBay or Amazon, or marketplace?

Alconkits.com specializes exclusively in Alcon brake systems. We are not a general parts reseller.

When you buy from Alconkits.com, you get:

  • Application-specific guidance for heavy trucks like the Ram TRX
  • Fitment advice on your brakes to ensure they clear your wheels with guaranteed compatibility with your vehicle.
  • Wheel-fitment and clearance validation support
  • Pad compound recommendations based on real-world use (street, off-road, towing, track)
  • Access to replacement pads, rotors, seals, and service parts long after purchase
  • Lifetime technical support from Alcon brake specialists

Most marketplaces can sell a box. We support the entire brake system lifecycle for as long as you own it.

What makes Alcon big brake kits different from other aftermarket brake options?

Alcon brake kits are engineered systems, not assembled collections of parts.

Each kit is designed with:

  • Vehicle-specific caliper piston sizing
  • High-mass rotors for thermal capacity on heavy vehicles
  • Motorsport-grade materials and manufacturing processes
  • Compatibility with factory ABS, traction control, and master cylinder

This results in more consistent pedal feel, better heat management, and superior durability compared to budget or generic big brake kits.

Are Alcon brake parts “one-size-fits-all”?

No. Alcon brake kits are application-specific.

Vehicle weight, intended use, rotor size, caliper configuration, and pad compound all matter—especially on high-performance cars and trucks. Selecting the wrong configuration or pad compound can reduce braking performance, increase noise, or accelerate wear.

This is why buying from the specialist distributor, Alconkits.com, matters.

What type of driver is Radi-CAL™ R4 Racing Brake Fluid 0.5 Liter for?

Manufactured by AP Racing, we recommend this as being suitable for the following driving styles:

  • Sporting
  • Street/Track
  • Armored/OffRoad
  • Track/Race

After purchase support questions.

What happens if I need pads, rotors, or service parts in the future?

This is THE question to ask. Alcon brake systems are fully serviceable.

When you purchase from Alconkits.com, you have long-term access to:

  • Replacement brake pads
  • Replacement rotors
  • Seal kits and service components
  • Technical guidance for maintenance and service intervals

This is a major advantage over marketplace sellers who may not support the product after the sale. We know what fits, we stock it, and we don't sell you parts you don't need.

Why does this Alcon brake kit cost more than stock brakes or some aftermarket options?

Alcon brake kits are built to deliver higher performance, durability, and consistency than OEM or budget aftermarket brakes.

The cost reflects:

  • Larger, higher-mass rotors for heat control
  • Precision-machined multi-piston calipers
  • Motorsport-grade materials and testing
  • Long-term serviceability and support

This is not a cosmetic upgrade—it is a functional braking system designed for demanding use.

Is Alconkits.com an authorized Alcon distributor?

Yes. Alconkits.com is an authorized and specialist Alcon distributor with one of the largest Alcon-focused catalogs and knowledge bases available.

Our team has extensive experience supporting Alcon brake systems across trucks, SUVs, performance cars, and specialized applications.

What kind of support is available if I have questions before or after purchase?

Alconkits.com provides lifetime technical support for Alcon brake systems purchased through us.

Our support resources include:

  • Direct access to Alcon brake experts
  • Extensive technical articles and guides
  • Fitment and configuration assistance
  • Long-term ownership and service support

Brakes are a critical system—our goal is to make sure you get it right.

How do I get support for Alcon Brakes

We make it easy - connect with us the way its convenient for you.

  • Call or Text Msg us at 630-360-2548
  • Use the Chat feature on this page.
  • Email us at sales@alconkits.com

TAGS

  • Brake Fluid
  • cp7005
  • radi
  • cal
  • r4
  • racing
  • brake
  • fluid
  • 16
  • ounce
  • bottle
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