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248 Posts
okay i know this is a kfx fourm but i have a buddy who keeps going on and on saying that curtis sparks makes the most power for the yfz's and that its the best pipe for a yfz, 450r, and whatever else they make em for j/w anyone got an idea what would be better for each of the 450's? cept the KFX cuz well find that out with the pipe shoot out l8r : )