Castrol POWER1 Racing 4T with 'Race Derived Technology' provides ultimate performance for extreme riding. For high performance 4-stroke sports bikes. Castrol POWER1 Racing 4T with 'Race Derived Technology' is specifically designed for bikers who love the exhilaration of riding. Using ‘Race Derived Technology’ it flows fast and stays strong, reducing internal engine friction even under the most arduous riding conditions. It has been tested and proven to deliver exceptional acceleration and power at a touch of the throttle.