Progressive 444 Series Shocks Super Heavy Duty 13/13.5" Touring 09-21 BS90 - Adjust timing based on

- Adjust timing based on temperature or boost inputs

1985 GPZ 750 R 750cc

Installs with allenhead (socket head) set screws

clamps and fuel hose

91-92 ZXR J1 / J2 / L1 / L3 750cc

Progressive 444 Series Shocks Super Heavy Duty 13/13.5" Touring 09-21 BS90 - Adjust timing based onOur Progressive Suspension 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 youre 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