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03 xr400 stage 1 hot cam install

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I have a 03 xr 400 i want to install a stage 1 hot cam do i have to rejet or can i get away with stock? I removed snorkle removed one of the baffles off the spark arrestor. Everything else is stock. Also street legal.

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I have a 03 xr 400 i want to install a stage 1 hot cam do i have to rejet or can i get away with stock? I removed snorkle removed one of the baffles off the spark arrestor. Everything else is stock. Also street legal.

I would do the cam, break it in, and try to get a feel for the bike. Then rejet the bike to match up with your opened up intake and exhaust to really feel the bang for your buck.

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Its gonna pull harder through the mid range,and on top,your gonna need to get more air/fuel through to keep up with the more aggresive cam, try it out like Sbabs said first.

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