Progressive Suspension

440-4039C

Progressive Suspension 440-4039C Chrome 13 Standard Inertia Active System Rear Suspension Shock

Body & Frame Parts

Inertia Active System separates wheel movement from chassis movement
High pressure gas charged for consistent damping performance
A top mount threaded preload adjuster allows for fine tuning with a simple twist of the cap
The Ultimate riding shock
Standard progressive rate spring

The 440 Series Inertia Active System: Ricor/Edelbrock technology refined for motorcycle use by progressive. I.A.S. (Inertia Active System) separates wheel movement from chassis movement. The proven progressive rate spring is wrapped 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 multiple spring rates as well as the ideal stock or lowered length for your bike. Chrome covers with chrome springs. High pressure gas charged for consistent damping performance. The ultimate in ride quality. Limited lifetime warranty on I.A.S. dampers. Heavy duty progressive rate spring.

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