FSD Shock Absorber

Automatically adjusts damping according to vibration frequency for greater comfort.
The FSD damper can automatically adjust the damping through the vibration frequency of driving conditions; Hongjin has developed the FSD Shock absorber with the single-frequency(FRD）valve independently. The dual-frequency valve damper developed by Hongjin is suitable for shock absorber cylinder diameter above 55, which is in line with commercial vehicles.

1. Core advantages
(1) Adaptive road condition switching
Low-frequency vibration (e.g. flat highway)
➤ Valve maintains high damping force, enhances suspension support, reduces body roll, and improves handling stability.
High frequency vibration (e.g. bumpy gravel road)
➤ The valve automatically switches to a low damping mode to quickly absorb high-frequency shocks, avoiding the transmission of vibrations to the body and improving comfort.

(2) Solve the contradiction of traditional shock absorbers
➤ Traditional shock absorbers need to compromise between "soft" (comfort) and "hard" (handling), while dual-frequency valves can take care of both needs through dynamic adjustment.

2. Actual application effect
Comfort Improvement
➤ Reduced "bumpiness" when crossing speed bumps, smoother ride on urban roads.
Optimization of handling
➤ Enhanced damping when cornering at high speeds, reducing body roll.This not only enhances stability but also gives drivers clearer feedback, making tight turns or sudden swerves more controlled and predictable.​
Durability Improvement
➤ By avoiding prolonged operation of the valve body at a single frequency, the shock absorber reduces mechanical fatigue. This balanced workload significantly extends the lifespan of internal components, ensuring long-term reliability and reducing the need for frequent replacements..
Hongjin has made a large investment in the frequency adaptive damper project, which involves precision turning and milling equipment, valve body testing equipment and valve body automated production line equipment development.More investment leads to higher quality。Reach out if you'd like to learn more.