Yamaha also addressed EPA an CARB regulations in their re-design. The new USFS-approved aluminum exhaust with spark arrestor is Federal noise level legal at 82dba. With the baffle out, it still registers under 96dba, meeting California regulations. The 450's newly designed air induction system also makes it green-sticker ready (a much-welcomed change for Californians tired of being shut down the instant rangers catch a glimpse of blue plastic). Expect the 250 to be green sticker-able in '06.
Look for the full test on both Yamaha WR's in the February issue of Dirt Rider Magazine.
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