How can you make a 1986 Fourtrax 250 2x4 go faster. It already has a cobra exhause and bigger tires. It can run about 50mph.

 

So how much faster do you want to go I have a 1985 250 with 25 on the back and 22 on the front it asume in the mudd. I don't beleive the engine will pull any bigger tires to get up to 50 I think mine goes at least 45 good luck