YSS shock absorber MZ456-370H1RL-12-88 for BMW R Nine T 17-22. Length 370mm. The YSS suspension MZ456 series is a Nitro gas supported shock absorber. The offered shock is specifically developed for your motorcycle model. Hydraulically adjustable preload with knob on a hose, rebound and length +-5mm. The shocks are approved on safety and use by the German T�V KBA ABE. YSS offers a 2 year full factory warranty. This shock absorber is fully serviceable.