Cane Creek Cloud 9 Shock: Ultralight air sprung, air damped rear shock with speed sensitive valving. CNC machined aluminum body, preload adjusts via schrader air valve. External rebound and compression with indexed damper dials. Rapid Compression Adjuster (RCA) for on-the-fly anti-bob setting. Delrin glide rings and Nitrile seals are easily serviced in minutes. Weight: 207-259g (half the weight of most coil shocks)