Royal Purple Racing Oil 21 by Royal Purple
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Royal Purple Racing Oil 21

XPR - Extreme Performance and Racing oils are formulated for ultra-performance applications such as racing, modified engines and off-road use. XPR's high film strength make ... Read more


Royal Purple’s XPR (Extreme Performance Racing) synthetic motor oil is specifically formulated for the demands of multi-platform racing environments. XPR is popular in a variety of motorsports including: NASCAR, NHRA, World of Outlaws and Bonneville Salt Flats. XPR combines the highest quality of synthetic base oil with Royal Purple’s proprietary Synerlec® additive technology and additional performance enhancers that maximize horsepower and torque while providing the highest level of protection against motorsports-grade heat and wear. XPR synthetic motor oil provides more protection than leading synthetics and conventional lubricants including those combined with aftermarket additives. Professional engine builders and race teams cite increased horsepower and longer engine life with the use of Royal Purple. Exceptionally tough under extreme heat, Royal Purple XPR comes in a range of weights, each specific to certain motorsports applications and fuel types – such as alcohol, methanol and nitrous oxide.

Royal Purple Racing 21 works well in a variety of applications from oval track late models to bracket racing. It is extremely versatile and produces excellent horsepower while preventing wear. Very popular in Spec Miata and other small displacement classes.


  • Viscosity typical of a 5W30 oil
  • Synerlec® additive technology forms a tough, tenacious film on all metal surfaces virtually eliminating engine wear.
  • Low coefficient of friction routinely produce meaningful improvements in fuel economy.
  • Increase horsepower and torque over other oils.
  • Natural solvency clean deposits left by old oils and keep engines clean.
  • Synerlec® additive technology protects during normal and severe operation and acts as a preservative oil during shutdown.
  • Increase efficiency for maximum performance and lower temperatures.
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