Top Speed & Mods to get there

I just recetnly rurchased a cagllari (mt-a1) and out of the box it did about 30-35mph. i changed only the rear sprocket from a 64 tooth to a 55 tooth. that put me up to about 41mph, but i have gotten to 45 while my friend would draft off me ( with only inches between tires). and downhill i'm just under 50. This is just because i changed the sprocket. what i don't understand is i just put a big bore head kit on, upgraded reed valve, timing key and i'm now slower then i was before. i can't even full throttle the bike now. might be something in the clutch.

X1 Pocketbike
30 Mph
Measured Speed By Riding Next To Harley On Closed Road.
Mod: Full-size Cherry Bomb Exhaust. I Doubt It Affected The Speed.

where can itake my son in georgia to race other pocket bikes

Gp MX3
150 lbs
16 yrs old
only the UFO hp air filter
28.2 mph on Schwinn Speedo, 28 flat next to a car...

can anyone tell me how fast a gp rsr can go with me on it and i weigh 110 because im interested in buying one . Also do you know where i can buy them.

I'm getting 32 on GPS, flat ground with my X7, totally stock. Best I've ever gotten was 36, and that was going down a slight hill.

Out of the box it only did about 20. Not because of a governor, but because the rear brake was dragging and the air screw was way too far in on the carb, it was running super rich. Backed that out and re-adjusted the back brake and it went much better.

Mine runs better on a leaner oil mix. The 20:1 recommended mix or whatever is way too rich, it's noticeably peppier running at the "standard" 50:1 mix. It won't harm the motor, we've run old (1950's) outboards that call for 20:1 on 50:1 for years with no ill effects.

where did you get the High RPM engagement clutch

One thing you can do to get less restriction in the driveline is to take away the original grease in the transmission lump, and then put other grease in there that doesn't restrict as much. You want to change that grease once in a while anyway, so make sure you put something good in.
I used wheel bearing grease, it "floats" much easier (not sticky as the original grease was) and it worked fine.

Then lube the chain, it will make it spin easier.

Check the tire pressure, if it's too little air in then it can be harder for the bike to roll. Try it with a bicycle if you want, let some air out and go uphill. The bicycle will roll very bad, almost like it stops when going downhill lol!

And check the brakes as the previous writer wrote.

You might also want to check/replace the wheel bearings for better ones.

my mx3's top speed is 49
50:1 K-2 racing oil
NGK bpm7a spark plug
i weigh 90
and thats it!

why is it that im one of the fastest with a stock gp mx3?

my dad bought me this small pocket bike. it will be 3 years this christmas. my brother drove my moms truck besides me in a huge lot. and the trucks speedometer read 37mph.. 2 weeks aho my dad and i were at a schol lot down my street. on the way back from the school i live on the same street uphill my moms bike read 31mph. and I am heavier now than when i got it. nothing has been touched since i got it

my dad bought me this small pocket bike. it will be 3 years this christmas. my brother drove my moms truck besides me in a huge lot. and the trucks speedometer read 37mph.. 2 weeks aho my dad and i were at a schol lot down my street. on the way back from the school i live on the same street uphill my moms bike read 31mph. and I am heavier now than when i got it. nothing has been touched since i got it, except greasing the chain and adjust