Technical documents
XR Race-Only Brake Fluid, 645°F Dry Boiling Point by Wilwood
Price range: $57.13 through $644.30
Wilwood’s XR Race-Only brake fluid is the highest performance brake fluid for every level of motorsports.
Used successfully by F1, FIA World Endurance, MotoGP, and World Rally Championships
- 645 °F Dry Boiling Point.
- 432 °F Wet Boiling Point.
- Each bottle is 500 mL or 16.9 oz.
- The best, most consistent pedal feel, from start to finish, in the most adverse high-temperature racing conditions.
- A proprietary blend of high-performance polymer electrolytes and borate esters provide the highest resistance to aeration, plus:
- Lowest compressibility available.
- Lowest moisture affinity available.
- Highest temperature resistance.
- Designed for extreme temperature and endurance racing.
- Premium packaging with an airtight safety seal ensures fresh, clean fluid upon opening.
- For off-highway use only. Not U.S. DOT approved.
- Click here to view Wilwood’s Data & Installation Instructions.
Upgrading to XR Race-Only Fluid When switching over to Wilwood XR Race-Only fluid, you should flush all the old fluid from your car’s entire system. Contamination with other fluids will significantly reduce XR’s 645° F boiling point, but there are no adverse effects from using XR to flush the old fluid out.







