'03 vs '04 WR450 jetting

I have noticed in different posts that the jetting between 04 and 04 is big. I looked at the exploded drawings and it looks like the 04 uses a DW? needle instead of a DU? in the 03. That means that the height and possibly diameter have changed.

The stock needle on the 03 is DUT. What is the stock needle for 04?

Ride fast - take chances


04 has a DWR needle stock, I have one in my 03, along with 162MJ, 48PJ, 70SJ....I like it better and didn't spend way too much for a jet kit! :)

dumb question, what's a DWR needle? I'm slowly learning these acronyms for the carb :)

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