250-500cc Jetting 2009 WR300

Hello all,

Looking to get the jetting right for trail riding in the North East. NJ area

Running stock pilot and 430 main. Any ideas out there for getting the engine to lug better in the tight trails?

Thanks Matt

what's it doing now that you don't like?

for current idaho conditions (2800-4000', 40-60 degrees), I'm at 32.5 pilot, 2nd clip on stock needle, 450 main. the bike seems to run well throughout the rpm range. I do alot of low-speed technical riding and tend to lug the engine a bit, and it's working quite well at low rpm, and pulls cleanly from very very low rpm. Hope this helps.

I would be very nervous about a 430 main if you ever get into situations where you run the bike hard. We have quite a bit of sand here in the wintertime, so i like to err on the side of richness on the main for those situations where I'm wfo for a while in the sand. I just lean out the pilot and needle to get the behavior I want (clean pull from idle, easy cold start with choke, easy hot start w/o choke, minimal or no spooge, etc...).

Hey Moto, I'm at sea level here and the dealer recommended the 430 main. and since broken in I've been running 40:1. The bike had a 460 main from the factory. Not sure what pilot is in there except that its stock. We did move that stock needle clip up one? and made a adjustment to the air screw.. I'm just looking for the engine to have the ability to lug a little lower with torgue.. Thanks Matt

Does anyone know of clamps that are off set and come back to the rider than the stock clamps and maybe a little higher?