My top speed?

[ORI]

Hey fellas,
I have a '92 blaster piped out, open air filter, 15t front sproket, 40t rear. What yu think my top speed it? I weight 170lbs. Mine isnt tuned either, has stock jets.
My brother(weights 120lbs) stock '00 blaster can beet mine with a all stock drivetrain.
thanks

[Memphis]

maybe you need a rebuild if he's beating you or he's a better rider. You should be able to push 68mph if you are running a 21" rear tire.

[ORI]

Iv rebuilt the engine twice. Me and him are both same at shifting, just weight is differance. IM not sure why mines so slow.

[HellStorm]

Does it bog down at all? If it does you should jet it right. Also tire size has alot to do with it. Mine goes 55mph with 18'' rear tires and 65mph with 22'' rear tires.

[kawi]

15tooth is way to big for a stock motor.