Easy to install, no Installation Instruction. * 100% Brand new starter clutch * Diameter: Approx. 107mm/4.21″ * High quality steel material, efficient and durable. * Starter Drive Clutch Assembly for GY6 125cc 150cc Engine We sell 100% brand new and high quality products. You can get what you want here at a competitive price! Don’t hesitate, just buy it! Description: – 100% Brand new starter clutch – Diameter: Approx. 107mm/4.21″ – Starter Drive Clutch Assembly for GY6 125cc 150cc Engine – High quality steel material, efficient and durable. – Easy to install, no Installation Instruction. Specification: – Material: Metal Package Includes: 1 Piece Starter Clutch Assembly