50 to 58 mph ive had one so i know
It depends on what model. But the 2004 400ex can go as fast as 70-75mph.
400ex does 60 tops.
73
My 400ex is stock and it will run about 87 mph. there is no way they may go 65 but no way 87 your crazy
0 to 50 on a good day
87 mph
54 to 58mph (in stock)
I have a modded z400 that goes 70 and i beat a 400ex(stock) by like ten lengths so probly around 60
mine is basically stock and tops out at 70 mph
not fast at all only if you jet the carb, have a intake, and big bore kit recomend a 416 not no bigger than that
65 to 70 mph stock
about 87 mph depending on the rider. i customized mine and decked it out and it clocked me at 110 mph with upgrades.