Trailmaster 110 XRX 420-13T 110 Engine Sprocket Trailmaster 110 XRX 420-13T 110 Engine Sprocket Item #: 420-13T The Trailmaster 110 XRX 420-13T 110 Engine Sprocket is made to fit the Trailmaster 110 XRX go-kart perfectly. With its durable construction and improved performance, this high-quality... $14.99 Add to Cart Add to Wish list Compare