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gear ratio

  1. 93 fourtrax 200 needs help

    Gear Reductions
    Hello, I'm new to this forum and this atv! When i got this quad in a trade it came with 26 in polaris tires on it and im looking for a gear reduction for a this 2wd model. Could i use parts for a 300cc model? Its chain driven so even if i cant get internal can u recommend a good sprocket set?
  2. Want more top speed

    Gear Reductions
    I have a 02 400ex not stock. If I add one tooth to front sprocket and take 3 from the rear will that change my top speed 3-5 mph?