High Surface Finished Spherical Plain Bearing (Fish-eyes Bearing) It Maybe Used On Other Motorcyles, Please Check Measurements Before The Order. Aluminum Alloy Spring is Adjustable,Adjustable rebound F (fast) and S (slow) at the bottom of the shock Quantity: 1 pcs Eye center to center Option : 250mm Spring Thickness 11mm Spring Diameter 65mm Mounting hole diameter: 10mm Mounting hole thickness: 20mm Travel : around 45-55mm Rate(lbs/in) 980lbs This product contains hydraulic oil. Package included: 1pcs Shock Absorber