cruise around 50mph, top 60mph . the rear wheel actually is not too heavy compare to stock wheel, because is aluminum. the wheel is an ATV front wheel 10x5. cost around $70, hub i just use Kymco/SYM rear drum hub. The rest need to spend is fabricate the mount, stretch and offset it. also re clock the pipe so it will stick out to clear the wheel. also need to custom a bracket for the pipe.
riding it was very fun, very stable going straight, but a bit hard to turn, not recommend doing sharp turn, or else the kick stand or frame will scrap
2003 Yamaha R1 998cc SOLD
1997 Honda Elite S 72cc SOLD
2007 SYM DD50 72CC X2
Goped sport 29cc