03 xr400 stage 1 hot cam install

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 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.

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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