Single chamber front monoshock absorber for scooters, compensated by presurized gas (Nitrogen), with oil/gas piston separator. Calibrated specifically for each type of scooter. Technical features: Shock absorber body in shighly resistant steel alloy, with new anti-oxidant and anti-wear treatments, head in aluminium alloy made from a single block by CNC machine. Adjustment: - spring preload, with micrometric alluminium ring. N.B: The product displayed is generic for WZB. Some characteristics (eg. Mountings) may vary for each model applications Compatible with: - Aprilia: SR 125/150_S