Features 1.BROAD COMPATIBILITY: This semi automatic clutch assembly is widely applicable to 50cc, 110cc, 125cc ATVs, off road bikes, Go Kart, providing reliable and durable performance. 2.ENHANCED TRANSMISSION: With a 17 tooth design, this clutch assembly provides excellent driving performance, delivering a smoother and more efficient driving experience. 3.DURABLE MATERIALS: Crafted from wear resistant, strong, and stable metal materials, this clutch assembly ensures a longer lifespan and outstanding durability for prolonged use. 4.RELIABLE PERFORMANCE: The 4‑1/2 inch diameter and metal construction of this clutch kit guarantee reliable performance for your engine dirt bikes and ATV. 5.EASY INSTALLATION: Designed for easy and simple installation, offering superior driving power and efficiency for your semi automatic engine, saving you much hassle. Specification Item Type: Clutch AssemblyMaterial: MetalClutch Diameter:4-1/2inDrive Gear: 17 TeethFitment: For Semi Auto 50cc-125cc Engine Dirt Bikes ATV Go Kart, for Taotao Package List 1 x Set ofClutch Assembly (18PCS)