The AlveyTech 4-3/4" Long Heavy Duty Clutch Assembly is a powerhouse component engineered for superior performance in go-karts and mini bikes. Crafted with durability in mind, this clutch assembly features a sturdy #35 chain sprocket clutch, ensuring reliable power transmission and longevity. With a 1" bore shaft and 1/4" keyway slot, it provides a secure fit and efficient operation, delivering optimal torque transfer for enhanced acceleration and speed. Boasting 12 teeth, this clutch assembly optimizes performance, making it ideal for high-powered 6.5HP engines. Its easy installation and replacement design make it accessible to both enthusiasts and professionals, facilitating quick upgrades or repairs. Compatible with a wide range of go-karts and mini bikes, this clutch assembly seamlessly integrates with various models, offering versatility and reliability on the track or trails. Whether you're seeking to boost your vehicle's performance or replace worn-out parts, the AlveyTech heavy-duty clutch assembly is the ultimate choice for durability, reliability, and superior performance. Specifications: Sprocket: 12 tooth Bore size: 1" Key way slot: 1/4" Chain Compatibility: #35 chain Weight: 4.5 lbs. Overall diameter: 4-3/4"