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nicktrx400ex
01-30-2006, 04:27 PM
why do atvs have a big pipe and dirt bikes have smaller ones.
450r51
01-30-2006, 04:49 PM
first off are u comparing a two stroke to a fourstroke? cuz they are really different then
nicktrx400ex
01-30-2006, 04:51 PM
4 stroke.