Regina Chain OE Chain and Sprocket Kit 6ZRT/112KKA016 Economical kits come with precut chain and front and rear sprockets Chain is Reginas high-performance 520 Z-ring series with gold outer plates and Z sealing rings, which dramatically improves performance and wear life; includes clip-type masterlink Sprockets are made of high-quality steel and have OEM gearing Chain: 530ZRT Gearing: 17/42