newer vs. older 400EX gearing?

[07RedRider400]

Ive heard the 04 and earlier 400exs have a bigger front sprocket than the 05 and newer ones, what difference does that small change make in acceleration and top speed?

[beastlywarrior]

More acceleration and less top speed neighbor

[RNL]

They changed the internal gearing as well. Old 400exs had a 15 tooth front sprocket, the new ones have a 14 tooth. The new style Ex's are suppose to accelerate a lil faster with same top speed according to dirtwheels.

[07RedRider400]

i heard people say its not as fast on top end, but you could be right, i wonder where i could check to see what the actual top speed is, i didnt know they changed the transmission gearing too tho

[RNL]

Heres a link to a shootout that talks about the changes.

"The new gear ratios on the Honda are a slight improvement. It feels like it accelerates quicker and pulls better on top end."




http://www.dirtwheelsmag.com/ME2/dirmod.asp?sid=&nm=&type=news&mod=News&mid=9A02E3B96F2A415ABC72CB5F516B4C10&tier=3&nid=14AF5783CA624BBD924EE00C9984A092