what are some things to make my 400ex faster
#2
Just take off your airbox lid, but be careful, dont go through sand or water or mud. You could also gear the machine "UP" By putting a 16 tooth front sprocket on it and any size smaller than a 38 (i believe thoze are the numbers) on the rear. That could add maybe 5-15 mph top end for about $75.00
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