"If your 4-stroke motorized bicycle is in need of a new transmission, this Dual Chain 49cc 4 Stroke Engine Transmission will have your engine up and running in no time. This transmission will make sure your 4-stroke bike engine has what it takes to pull your bike for miles.
The freewheel behind the bevel wheel allows the drive shaft to idle, which non-dual chain transmissions don’t. Combined with dual gears to ensure the transmission chains don’t slip off while riding, these transmissions are meant to take any type of terrain you can throw at it.
Compatible with 49cc 4-stroke’s like Flying Horse 5G and Huasheng 142F motorized bicycle engine kits, this Dual Chain Transmission will get your motorized bike back on the road in minutes."
Customer ReviewsWrite a review
Way better and stronger then other brands. Really happy with it.
Yes the one i got with the 4G 4stroke dual chain transmission gave out but replacement sofar is great . Shiping was on point . Service person Christian was extremely help. Ill be getting my mags an studded tires for a Michigan winter. Im on a 94 Treck
Perfect! Far superior than belt drives. This tranny is far better than the cheap belt drive ones you will find for sale with most competitors and their kits. This dual chain is far more dependable. Also I always check to make sure there is enough grease packed in these sealed case transmissions and BikeBerry never fails to make sure I get quality parts. I build these kits for friends and the last thing I want them to do is come back for repairs. BikeBerry's quality parts take and doubt away when I do these builds for my buds.
Best chain transmission. I have used this transmission on my bike and now have a little over 4k miles without problems. (although the duplex chain has stretched some) I have replaced the clutch fly-weights once to date during the 4k miles.What I like most about this unit:Way more robust! ... Duplex chain. Larger shaft diameters (means larger bearings too) and sprag built into the larger 41 tooth sprocket. Solid clutch bell is also stronger than most.NOTE: drill 1/4 hole at top. Add 4oz oil or ATF to chain case. Seal the hole and forget about trans problems! Enjoy your ride.
good exelllent function good