Starter Drive Clutch Assembly for GY6 150cc Scooters ATVs Go Karts Moped Quad 4 Wheeler Dune Buggy Roketa Taotao Jonway Taotao SunL JCL Coolster Kandi Starter Drive Clutch Assembly. Top Quality Guaranteed. Starter Drive Clutch Assembly for GY6 150cc Scooters, ATVs, Go Karts Inside Diameter: 23mm; Out Diameter: 120mm Best qualified product with competitive price; National standard,long lasting working life time