[Introduction]: This Assembly Clutch is heavy duty automatic clutch kit for Honda style. [Specifications]: A complete set. Clutch Outer Diameter 4.57 in, inner hole dia. 0.68 in. 17 teeth drive gear. [Fitment]: Fits Auto Engine. [Applications]: Fits most 50cc – 125cc ATVs, dirt bikes, and go karts with automatic with reverse engine. [Note]: Please check the TYPE before purchasing. You can get the most friendly customer service. Specifications Name : Automatic Clutch Outer Diameter : 4.57 in Inner Diameter : 0.68 in Tooth : 17 teeth drive gear Applications Fits Auto Engine Fits most 50cc – 125cc ATVs, dirt bikes, and go karts with semi automatic with reverse engine. Note Please check the type before placing order. Manual measurement, error 1-3mm, depending on the actual situation, please understand. You can get the most friendly customer service.