Unknown rear suspension spring?

[stunter1]

My buddy bought a 2004 RX-1 Warrior with a M-10 suspension in it. The previous owner gave him this extra spring. My buddy thinks the owner said that the spring was the stiffer M-10 spring.

There isnt a part number on it, how can I tell what type of spring it it?

I have a 2005 RX-1 ER with the monoshock suspension and want a stiffer spring. My suspension has the click adjustable shock. Would this spring work in it?



The spring is 12" long

thanks

 

[stunter1]

will only certain springs work with the click adjustable monoshock rear suspension?

thanks