Originally Posted by biknut
I don't have any experience the their 4 stroke motors, but their 2 strokes are my favorites. I've bought 3 of them. They've been better than any other kind I tried, and all 3 are still running great.
Bikeberry's 4 stroke kit uses a 49 cc Hausheng like similar kits
but the cheap pocket bike gearbox is it's Achilles heel.
Pay a few dollars more to get a much better gearbox from
Bicycle-Engines.com in this kit.