how fast will my dirt bike go?(i also need some help)?

  • Thread starter Thread starter Dillon G
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Dillon G

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ok its a 2002 yz 125,fmf full exasht, and wisco piston. about 70mph?? if not corecct me. ok and i want it to go about 73. what sprockets sizes(front and back)should i use but i still want a good holeshot.
 
What are you doing with this bike? There isn't a motocross track in the world that lets even the best riders achieve 73 MPH, more like 50 MPH . I just really don't understand why you choose this number. Perhaps you could edit the question and explain. No motocross bike should be geared for that kind of top speed, that's just ridiculous.
 
http://ttr125.net/ will allow you to purchase a sproket upgrade kit, go 1 tooth down on trans and up on wheel end. but why you want to do this for 3 mph is beyond me.
 
IT SHOULD DO 70-80 QUITE EASILY! DEPENDING ON THE PARTS YOU HAVE ON IT. EG RESTRICTOR, EXHAUST
 
it should run that fast with stock gearing. 70 to 75 topped out. you cant have faster top speed and still have the low end gearing to the holeshot.
 
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