Regina Sprocket 5QUAD/104KYA003 Chain KIT Yamaha YFZ350 Economical kits come with precut chain and front and rear sprockets Regina's high-performance 520 Quad Z-ring series (8,000 ft./lb. strength) with gold outer plates and Z sealing rings, which dramatically improve performance & wear life; includes clip-type master link Sprockets are made of high-quality steel and have OEM gearing