PROGRESSIVE SUSPENSION 440 SERIES OE REPLACEMENT SHOCK ABSORBER
I.A.S (Inertia Active System) splits wheel movement from chassis movement
High Pressure Gas Charged for consistent damping performance
Progressive Rate Springs available in Standard or Heavy Duty rates
Limited lifetime warranty on I.A.S Dampers
Every product line has a best of the best and the PSI 440 Series shocks are just that. Progressive Suspension wrap the proven progressive rate spring around a state of the art damper and top 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 obtainable in two finishes and multiple spring rates in addition to the ideal stock or lowered length for your bike.