Fits compatible with: Honda Z50 Z50R Z50A XR50 and many other Japan engines, Chinese Dirt Bikes and Go Carts.This carburetor works great on 49cc engines.New Carb with 1 1/4 inch OR 32MM on center mounting holes.Intake Side: 28mm (whre the airbox mounts).compatible with Honda Z50 Z 50 R 50cc Dirt Pit Bike 50R MONKEY CHINA XR PZ-10 CARBSpecification:Manual choke and TOP FUEL INLET.Intake Side: 28mm (whre the airbox mounts).Rear Opening: 14mmColour: silverMaterial: metalPackage contents:1 x CarburetorOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.