i kno this is a atv site but does any1 know the top speed of an xr400, im thinking about makeing one into a dual-sport machine and possibly take it on highways. thanks in advance

 

It depends on the sprockets. You can gear it for acceleration or top spead.

 

I talked to a guy that was doing the same thing. He went to Honda and orderd the biggest countershaft sprocket that would fit. I think it was a 17.

 

im talking about stock tho, because ill make the decision on sprockets later. but i just want an estimate to see if i even need to mess with the sprockets

 

depends on how high/long you want to rev it

75-80 is what I've seen stock (15/45)

don't think you'd get any more than 90 without engine mods, regardless of the gearing

my XR600s were great, well fun as heck around town, but just ok for short runs on the highway at 70 with 16/45 - tires and connecting rod were my worries

maybe someone else can share their experience?

 

I made my '01 XR400 street-legal. I run 14/45 and it will do about 70 max, I don't like to run it that hard. Does 55 pretty good, but mainly used on back roads. I don't think I'd want to take a long road trip on it, though.

Chad

 

I have a '98 XR400. Just last week it was clocked (by GPS) at 71 mph. The bike wasn't topped out - I just ran out of room. I was WOT in 5th, but the speed was still climbing when I had to let off.

It probably would have hit at leat 75. I'm also -1T in the front - so i'll be it's close to an 80mph bike with stock gears.

 

i beat a xr400 with my ds650 by like 10 bike lengths

 

whoopdie doo, thanx for those who responded. sounds like an xr400 can get the job done for me! thanx again