For high performance 4-stroke sports bikes. Castrol POWER1 Racing 4T, is full synthetic engine oil with Race Derived Technology™ is specifically designed for bikers who love the exhilaration of riding on the limit. 'Race Derived Technology™' is based on Castrol's long and successful racing association that helps oil to flow fast and stay strong, reducing internal engine friction even under the most arduous riding condition. It has been tested and proven to deliver exceptional acceleration in race track conditions, thereby providing ultimate acceleration.