YSS shock absorber MZ456-320H1RL-47-88 for Harley Davidson Softail Fatboy 1745 18-22. This shock absorber has the standard length of 320mm. The YSS suspension MZ456 Topline series is a Nitro gas supported shock absorber. The offered shock is specifically developed for your motorcycle model. Hydraulically adjustable on spring-preload with a knob on a hose, rebound damping and ride height. The shock is approved by the German T�V for German and Swiss KBA-ABE. For model specific ABE approvals please check www.suspension-store.com/ABE_downloads. YSS offers a 2 year full factory warranty.