what powerband does the XS run?

stillwater

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• Jun 30, 2021

• #1

Looking to do a lot of mods to my '79 XS400-2.
To go turbo, N2O, cam, etc. I need to know what powerband the bike runs in Stock form, and what powerband I may expect from a modded bike..

Suggestions?

 

stillwater

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• Jul 24, 2021

• #2

Anyone know what the powerband is for a stock '79 XS 400-2 ??
Guess I could call Crower, they're gonna grind me a midrange power Cam for it.

Was hoping someone here may know...

 

Jasonsblue81

colorado Kid

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• Jul 26, 2021

• #3

thats a shame. looks like a nice stock bike

 

stillwater

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• Jul 30, 2021

• #4

The pic is of a bike just like mine, when it was in good condition. Mine needs considerable work.
Trying to get some helpful info about what I want to do with mine.

 

X

xschris

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• Aug 1, 2021

• #5

No real numbers on a sohc xs400s' power curve but most ran (u.s.)23lbs torque max and 38hp max. or so average over all model years. A good stock setup bike will have the best overall performance. Making mods unless you have access to a dyno and real performance parts, which no one makes for these, will only hurt overall performance and reliability that these were engineered for.