the 400ex is a really good bike for dunes and racing and trails and reliable quad, on the other hand a 450r has alot more power/torque and is good for drags, trails, dunes, and tracks
yes i just put one on my 2001 400ex the only thing you really have to do is take the intake manifold and hoen it out some the intake tube is a tite fit but it works
full exaughst(hmf,fmf,whit bros, etc...) k&n airflter(no airbox lid) sprocket setup, 416 big bore no bigger than that, 450r front shox, tires, race fuel.
how to time a 2002 400ex
400ex does 60 tops.
If you are talking about a klx 450r, then the answer is 96 mph.
The Honda TRX 450R does NOT come with reverse gear.
the stock 400ex has 29.3 at 6900 rpm
definitly
in a long distance a 450r honda will win
no there top speed is about 70 mph about the same top speed of a 400ex i would have to say a Honda 450r , Yamaha yfz450 suzuki ltr450 just because they have more cc's don't mean anything to these bikes{ excluding small bikes}
Approx. 70mph to 75mph is the max. speed of this Honda trx 450r.
a stock 2008 450r has 55 horsepower at 11,270 rpm