Hydraulic preload device - for shocks from the 456 series - YSS

Hydraulic preload adjuster from manufacturer YSS for shock absorbers in the 456 series.

Product description:
- hydraulic preload adjuster from YSS;
- for adjusting the spring preload on shock absorbers in the 456 series;
- can also be used for upgrades;
- no additional parts are required;
- it is possible to install a shorter spring as well.