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View Full Version : What is the top speed of a Z400/KFX400 ???



mc1984
07-12-2004, 08:49 PM
I was just wondering what the top speed is on a stock LTZ400/KFX400? Thanks guys!

dpizz450
07-12-2004, 09:17 PM
68-71 mph

SHOCKER
07-12-2004, 09:53 PM
80 on our trailer with my dad driving my ram ;) sorry had to

nemesis
07-13-2004, 05:21 PM
I can only hit 65mph on mine

lol
07-13-2004, 08:29 PM
70-71

Billdog350
07-14-2004, 07:07 AM
Everyones numbers are right about dead on. If you put in the gearing according to the gearing/speed calculator here: http://home.earthlink.net/~gellett/ltz400.htm
It's right on. I went to a 39t rear sprocket and I top out at 67 mph on the flat and 69.5 downhill. I weigh about 180 and all I've done to the machine is dynojets, airbox lid removal, and removed the endcap.

nhyfzrider
07-18-2004, 08:28 PM
high 60's depending on mods.

kawasaki_ridah
07-19-2004, 11:18 AM
i took mine down the road last night with my friend following me in his truck and i hit 70-73

xXmarkXxX0113Xx
07-31-2004, 08:29 PM
miones got a yoshi pipe and air filter and i brought it to the drag strip and ran a 1/4 mile in 16.3 sec's @ 72 mph. (its for sale if anyone's interested)

Billdog350
08-01-2004, 09:09 PM
I threw on a set of 22" ITP Blackwaters on 8" steel rims (heavier than the stock 20's by quite a bit). After dropping one tooth on the front sprocket I'm hitting 65 on the flat and 67 on the downhill. The increased ground clearance is well worth the reduced top speed.