1999 WR 400 Improvements:

Hey guys -

I have a '99 WR 400 (stock), and I'm trying to 'beef up' - any ideas on what there is to do in a cost effective way? Exhaust? Jetting? Really just looking for some more HP's. Any ideas would be very helpful! Thanks.

yz timing, find a cheap pipe on ebay, plan to repack it though,

Grey wire, throttle stop, open the air box, and unplug the exhaust. Follow that up with cam timing and then rejet last.

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