WR450 Air Box Mod

What did you change your jetting to when you opened up the air box?


My jetting is in my signature below. Works great with my set up. Rode this weekend temperature in the seventies with ex NBA Pacers center Rick Smits who rides a 520EXC and the only difference he could feel was the 739's suck in the sand. He had S12's on his. I cant wait to burn these 739's into the ground.

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