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Big W's 400
03-02-2004, 08:45 PM
Can anyone tell me the top speed of a 400ex, with a k@N airfilter, t-4 procircut pipe?
03-02-2004, 08:53 PM
74
cummingetit
03-02-2004, 08:59 PM
JUMBO- I wish your sig referred to the size of your brain so I wouldn't have to read your ridiculous posts.

around 65mph with stock tires and stock gearing.
riverex
03-02-2004, 10:54 PM
65 mine is piped and jetted and it will do closed to 75 and i weigh 240lbs.
jesshamner
03-02-2004, 11:45 PM
Mine ran 67mph stock. I have the k&n, pc t-4, and a 160 main jet now and its definitely faster than stock. I don't know if I would say its 74mph though.
ZSK
03-03-2004, 09:48 AM
2-3 mph faster than stock so around 68-70. Gearing is the way to change your top speed, the only reason I said 2-3 faster would be because these mods let the engine rev out more pulling to the rev limiter.