ok i don't know where everyone get that the 400 only goes 65-70 but i was clocked at 74 stock, and who ever says "what does the max speed matter are you gonna be gonna full throtho 24/7 acually i do because i race flat track so stop being an *** and give a straight answer

 

Ok, I have some advice for u. Stop SMOKING CRACK! I have a 400ex and it DOES NOT GO 70 mph. Who cares!!! What would u want to do going that fast anyway?

 

if you wanted to go faster for flattrack racing, then why dont you go a few teeth smaller on the rear sprocket? AND.... if you knew the top speed already, then why did you place this forum?