Go Kart Minibike Belt Direct Drive Fun Kart Centrifugal Clutch 3/4″ Bore 13 Tooth #428 Chain Fitment: Go-karts and Mini-bikes, clutch can mount inward or outward on crankshaft. Teeth: 13T; Bore Size: 3/4 inch; Competiable Chain Size: #428; Engagement Speed: 2000??100 RPM; Horse Power: 3.5-7HP 170F Engine Package Included: 1 x Go Kart Clutch 3/4″ Bore 13 Tooth (Inner Hole 20mm) Good service: The goods will be shipped from American warehouse directly, We providing high-quality products and first-class services at reasonable prices. If you are not satisfied with our products, you can return them back and we will make the refund for you. Feature: 13 Tooth sprocket. Fits a 428 chain. 19mm metric bore. HD 428chain clutch and sprocket set for Honda import Gokart and Buggy engines with parallel 19mm engine drive shafts. Fits the wide range of Honda import clone engines used in Gokarts and Buggies normally on 3.5-7HP 170F engine styles. Specification: Type: Centrifugal Clutch Col