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Rev box help on 03' XR80 ?

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Beginning to do some mild mods on the kids 03' xr80. I see a lot of these rev boxes advertized saying it will help through the entire power curve as well as raise rpm by 1k +. Anyone have any experience with these? Worth the $ or not? The only other mods so far are a uni air filter, cleaned up the welds in the pipe (like the "gordon mods" noted for the bigger XR's) and lowered the clip on the needle one slot. Goes a little better than stock - but still has an annoying bog out of the hole... Any performance insights would be appreciated. :cry:

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The collective wisdom on a revbox on a 80 and 100 is that they are a waste of money. Stock CDI reves very high. Big boost in HP can be got from a big bore 92 -95cc, cam, a XR100 carb and good pipe. A search will turn up a lot of info on modding the XR80 and whats available. :cry:

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