The Red Circles 10 Tooth 428 Pit Bike Front Sprocket (20mm) is a fantastic upgrade for your vehicle's drivetrain. Designed for use with 428 chains, this sprockets' 20mm center spline ensures compatibility with various engine configurations. Its durable construction, enhanced for better performance, ensures a longer lifespan, reducing the need for frequent replacements. This sprockets' ability to handle check engine sizes of either 17mm or 20mm makes it a versatile and adaptive solution. With its top-notch performance and adaptability, the Red Circles 10 Tooth 428 Pit Bike Front Sprocket (20mm) is a must-have addition to your bike's gears.