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Brake Fluids

AP Racing R3 PRF660 Racing Brake Fluid

AP-CP4660

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Designed To Perform At The Highest Levels Of Professional Auto And Motorcycle Racing- AP PRF 608 Racing Brake Fluid Exceeds DOT 4 specifications. To ensure that the fluid stays fresh, AP brake fluids are furnished in 1/2 liter (16.9 oz), easy pour plastic bottles with double sealed caps.

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AP Racing PRF/R3 Racing Brake Fluid

DOT 4.0- Approved for highway use.

PRF 660, Re-branded as Radi-CAL™ R3 - Silver Bottle with Yellow cap. R3 developed for use in high temperature racing conditions . Conforms to and exceeds FMVSS 116 DOT 4 and SAE J1703 and J1704. There have been no formula changes, just a newer looking label and a different part number.

This was a (AP PRF 660) Blue Bottle with Yellow Cap now (AP Radi-CAL R3) Silver Bottle and Yellow Cap.

Designed to perform at the highest levels of Professional Auto and Motorcycle Racing- AP PRF 608 Racing Brake Fluid exceeds DOT 4 specifications. To ensure that the fluid stays fresh, AP brake fluids are furnished in 1/2 liter (16.9 oz), easy pour plastic bottles with double sealed caps.

AP Racing PRF is currently one of the most popular brake fluids at the highest levels of professional auto and motorcycle racing.  PRF was specifically developed for coping with extraordinary temperatures, such as those encountered when running a carbon/carbon brake system.

Although PRF isn't advertised with the absolute highest boiling point numbers on the market, independent laboratory testing and trackside data collection have confirmed that AP PRF outperforms competing products when temperatures rise.  Don't trust overinflated numbers slapped on a label, trust the product that has delivered countless victories at all levels of racing.

When switching your fluid to AP Racing PRF, DiscoveryParts recommends purging all of the old fluid from the system via a manual bleed.  Most of our customers find that three bottles of fluid are enough to completely replace their existing brake fluid, and still have enough left over for a bleed at the track to remove any remaining air bubbles.

'Typical' New Dry Boiling Point - 320°C (608°F)
'Wet' E.R. (Equilibrium Reflux) Boiling Point - 199°C (399°F)

AP PRF 608 /R3 Details:

  • Manufacturer: AP Racing
  • Manufacturer PRF660 part number: 5660
  • Manufacturer R3 part number CP4660
  • UPC: 848238040081 (this did not change)
  • DOT Rating - 4
  • Dry Boiling Point - 608°F
  • Wet Boiling Point - 399°F
  • Compatible with other fluids - No
  • Container - 16.9 fluid ounce (500ml) plastic bottle

Is the now bottled and labeled as

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