I’m pretty happy with the big bore kit and exhaust on my Chinese scoot. It is just a TaoTao VIP50, but I replaced the short case with a long one from a wrecked scoot, so I could get some more wheel diameter for a better ride. I would really like to put Zuma-sized tires on it. Have any of you fitted 130/90-10 dual-sport tires on a long case 50cc GY6? I know they will clear the fork, but the CVT case and shock look a little close for comfort.
I can currently max out my tach and speedometer at the same time, but it feels like there is more in there. I don’t want any more speed on those tiny, skinny tires, but if I could get some honesty from that speedometer at 10k, that would be good enough for me. Maybe the hot cam and PWK carburetor as well at some point.
Put the back tire on. It just barely clears. I went for a ride to compare top speed before the front one changes the speedometer reading. The zippy acceleration that I had come to love is gone, and my reward is that it hits 50 indicated, so 40 at 9k instead of 10k, but it lacks the oomph to get up to 10k. The riding experience is worse. No doubt hurt by the extra rotational weight of these big tires. Even if it could run out to 10k, maybe that would get me an extra 5mph. If I can get some more power out of a cam or PWK carb, maybe this will be an improvement if the ride is better on big tires.