The Sparks Racing 520cc Big Block Cylinder Kit is perfect for any build where performance and reliability are a must. Our cylinder kits are designed and engineered to offer the performance you want while retaining the reliability you demand. This kit requires machining of the engine cases to be installed. The cylinder features enlarged water jackets for increased cooling capabilities, extremely thick cylinder bore walls to insure maximum reliability, and Nikasil plating. Taking a stock bore 450R to 520cc offers a substantial increase in horsepower and torque across the entire power curve. This kit is designed to run on fuel with an octane rating of 110 or better.
