Every product line has a “best of the best” and the PSI 440 Series shocks are just that. We wrap our proven progressive rate spring around a state of the art damper and top (and bottom!) it off with machined aluminum
end caps.

A top mount threaded preload adjuster allows for fine tuning with a simple twist of the cap and the 440 Series is available in 4 finishes and multiple spring rates as well as the ideal stock or lowered length for your bike.