54 to 58mph (in stock)
400ex does 60 tops.
It depends on what model. But the 2004 400ex can go as fast as 70-75mph.
87 mph
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
mine is basically stock and tops out at 70 mph
I have a modded z400 that goes 70 and i beat a 400ex(stock) by like ten lengths so probly around 60
about 87 mph depending on the rider. i customized mine and decked it out and it clocked me at 110 mph with upgrades.
73
probly close to 75 miles per hour mabey even 80. Ya right my wifes trailblazer 250 will run about 50 and the honda 400ex was barely beating me, his on gps will run 60 stock
i just gon mine right out the shop for Christmas and it tops around the high 60`s
0 to 50 on a good day
There isn't a "timing" on a 400ex or any other atv. There is a timing CHAIN, and timing chain tensioner. -my400ex89 "go big or go home"