Do the Evol shocks have progressive springs like the Raptor Shocks do or no springs at all?
the evol reservoir changes the progression of the spring rate (more air = more rate progression)
The standard shock reservoir controls the ride height. (equivalent to changing position of a coil spring compression nut.)
Bear in mind, it's still an air shock, no actual coil spring, but it still acts like a spring, and has a spring rate.
I look forward to riding mine, as I just did the evol upgrade. stock, the shock is a slug on steep sidehill.