Material: metal components Package Includes: Starter Clutch Outer Assy, Primary Driven Gear, Clutch One Way, Friction Ring, Needle Roller Bearing OEM Codes: 28125-MEY-671, 91012-PN6-701, 28115-MEY-670, 35T 28110-MEY-670 Special Features: Stronger Roller Performance Products, Hardened and Ground for Durability Improvement Applicable Models: TRX450ER 2006-2014, TRX450R 2006-2009, CRF450X 2005-2009, 2012-2017 External Testing Certification: ISO9001 Upgrade your motorcycle engine with the Starter Clutch Outer Assy Kit, designed for performance in demanding conditions.This assembly serves as a direct replacement for components, compatibility and ease of installation.Constructed from metal, the parts are hardened and ground to improve resistance to wear and extend service life.The enhanced roller design and included needle roller bearing support consistent engine function under heavy loads and extreme operating environments.This kit is engineered to fit specific models, including TRX450ER, TRX450R, and CRF450X, providing a precise match for each application.The ISO9001 certification confirms that the product meets established quality standards for manufacturing and testing.OEM reference codes accurate part matching for a confident upgrade.The kit includes all necessary components for installation: starter clutch outer assembly, primary driven gear, one-way clutch, friction ring, and needle roller bearing.Its design allows for straightforward replacement without the need for modifications, helping minimize downtime and restore functionality efficiently.