After more than a decade of ruling the roads with the road-proven shocks, Progressive Suspension unveiled another breakthrough design. Dubbed Frequency Sensing Technology (FST) for its unique ability to dynamically adjust damping as you ride. The result is superior performance no matter the road conditions. A top mount threaded preload adjuster allows for fine-tuning with a simple twist of the cap.
- Frequency Sensing Technology (FST) allows the shocks to sense the frequency of a bump and automatically adjust damping for superior ride quality
- Adjust spring pre-load by hand - no special tool needed
- Progressive-rate spring
- Deflective disc valving
- Sold as a pair
- Made in the USA
Choose your model prior to purchase.
Fits Harley-Davidson Models:
Note: Excludes Tri-Glide Models