Does the 04 450 need the BK Mod?

Just wondering if the new ones need this mod? Picking mine up this week. My 02 426 ran much better with the BK. Thanks! :)

I don't believe the WR450's (2003 OR 2004) needs the bk mod done. I haven't done mine on my '03 and it runs great. I did have to do it to my '02, though.

That would be great. Anybody else know for sure? :)

I was told by James Dean that the carb on 03-04's do not need the mod.

03-04 don't need the BK (sorry to repeat that). There is a screw to adjust the squirt. Look in your owner's manual. And I did have to change the leak jet to a #40 for best results.

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