Progressive 444-4020B PGR 444 Shocks stands-bike-stands 2001 Polaris Worker 500

2001 Polaris Worker 500

2018 Polaris RZR 900

1990-1991 Harley Davidson FLSTC Heritage Softail Classic

1987-1988 Suzuki LT80 QuadSport

Progressive 444-4020B PGR 444 Shocks stands-bike-stands 2001 Polaris Worker 500The 444 Series Shocks feature a proprietary patented Frequency Sensing Technology (FST) that has the unique ability to dynamically adjust damping as you ride; what this means is whether you're hitting the small or big bumps in the road, the shock distributes oil through ports accordingly to soak up the hit making for an ultimately comfortable ride. A top mount threaded preload adjuster allows for fine tuning with a simple twist of the cap. 444 Series