Exhaust valve springs

[Thrashed22]

Hello,
I'm rebuilding a 2010 Polaris RMK 800 Dragon, and it needs new exhaust valve springs. The current springs are rusted and actually thinned out in places, but still show some pink paint on them. It looks like the factory springs were slightly stiffer orange ones. Could I get a little advice on which spring to go with these please? I really I don't know what effect the different springs have. *I'll be riding mostly around 1,500' elevation, but occasionally up into 8,000' areas.
Thank You

 

[mtnclimber19]

The pink ones are probably better for high elevation and the orange ones would work better for low elevation. But the pink will work for both, so that's what I would use.

 

[Thrashed22]

Ok, thank you!