Upgrade your Yamaha TT-R 90's performance with this 420 Sprockets and Chain Kit. Compatible with Yamaha TT-R 90 2000-2007 models, this vehicle-specific kit includes everything you need for a complete drive system refresh. The complete kit arrives as a single package with all necessary sprockets and chain components, making installation straightforward. Made with durability in mind, this sprocket and chain combination ensures smooth power transfer and consistent operation for your riding needs. Yamaha is a registered trademark of Yamaha Motor Co., Ltd. This product/website/service is not affiliated with, endorsed by, or sponsored by Yamaha Motor Co., Ltd. Any reference to Yamaha is used solely for identification and descriptive purposes.