7 Tooth # 25 Sprocket Pocket Bike Transmission Clutch Drum Housing 78 mm.
This is a replacement part for some Pocket Bikes and scooters that use # 25 Chain 1/4" Pitch x 1/8" Width. You can also used the #25 HD chain.
This housing has a single bearing and is NOT a good way to drive a bike or scooter due do the tiny sprocket on the engine and a huge sprocket on the wheel or axle.
This is why you need a gearbox so you can use a larger sprocket on the engine or drive and a smaller sprocket on the wheel or axle.
Gearbox Transmission Type-2 for 47cc and 49cc Cag and Daytona style pocket bikes and pocket quads.
Made in CHINA.
