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z400mayhem
09-04-2009, 10:32 AM
How fast will a 2003 z400 go ? It has a yoshi pipe, k&n filter, and jet kit.
Flynbryan19
09-04-2009, 11:24 AM
Really fast!
cataway
09-04-2009, 02:58 PM
here , do the math
http://home.earthlink.net/~gellett/ltz400.htm
Pappy
09-04-2009, 03:02 PM
They are scary fast! I once saw a dude's teeth get sucked out of his mouth when he clicked 5th gear! It was awesome!


To answer the question, no faster then stock
KAWIRYDER
09-20-2009, 11:15 PM
I had about the same thing on my KFX and I would say probably 70 to 75 mph.
TRXRIDER4567
09-21-2009, 12:54 PM
why does everybody give others such a hard time when others ask how fast a bike goes?
z400mayhem
09-22-2009, 06:50 PM
ok