Amortisseur Tout Suspendu Vtt X-Fusion O2 Pro RL 190x51mm Rear Air Shock, YB2750 Air Spring Réglage Hydraulique New air sleeve provides a lower air-spring compression ratio for a more linear. New compression and rebound tunes for better small bump sensitivity and maximum efficiency. - OEM package (This item is exactly as pictured and does not include retail package) FEATURESNew seal designs and materials optimize performance and increase durability. Additional Volume (AV) air-sleeve option provides a more linear air-spring to match certain frame designs. Pick between models that feature multiple stage compression adjustment, on the fly lockout, or even a handlebar remote lock out. Optional 7-Piece mounting hardware system offers superior strength, reduced drag, and ensures longer bushing life.