ATV Connection Magazine

400 sport

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Posted by: Speedwerx

The first palce I would start is with the clutching, do you know what parts are in it ? If you feel the clutching is ok I'd look at v-force reeds, reed spacer and one of our billet heads. If you still want more than I'd look at cyl porting, or possibly our 440 kit along with a 38 or 42 mm carb kit.

If you have any more ?'s please let us know.

Posted by: Speedwerx

We have a clutch kit designed for our pipe already. It depends on what elevation you ride at as well.

Posted by: badazz400

man you are geared like super low too.

a red/yellow spring with 255's mike work well with your setup

Posted by: joshk1234

What should i do about improving the middle end on my sport 400? The mods are as follows below...

Posted by: joshk1234

What springs and weights do you recommend for my clutch given the mods that are on it that are listed below?

Posted by: joshk1234

What all did you take off to shed that much weight?