Jason I ride an similar elevations, Sea Level to 5,000 and it runs fine. Last year I went to Utah and at Bryce & the Paiute I had some major power issues on the higher elevation trails. I wouldn't go back without a rejet now. In fact I'm looking at putting in the dial-a-jets in our ATVs. I was on one trail that I was lucky to be going 10MPH on.
For just a 1/2 day its a tough call, but I would say get it jetted.
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Y-Guy wrote: Jason I ride an similar elevations, Sea Level to 5,000 and it runs fine. Last year I went to Utah and at Bryce & the Paiute I had some major power issues on the higher elevation trails. I wouldn't go back without a rejet now. In fact I'm looking at putting in the dial-a-jets in our ATVs. I was on one trail that I was lucky to be going 10MPH on.
For just a 1/2 day its a tough call, but I would say get it jetted.
I guess we're the opposite. We live at sea level and when we go riding in Durango and Mammoth, I never re-jet (except the 2 stroke) and have never had any issues. We ride anywhere from 6000' and have been up to 13000'. I don't notice any power loss, though I'm not saying there isn't some. Our bikes ride just fine and I've yet to foul a single plug (knock on wood).
Leaving next week to Mammoth for 6 days and won't re-jet the 4 strokes. The 2 stroke is already done.
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