Scooter rear gas shock absorbers for Piaggio Vespa 125-150 4T 3V Iget Sprint-Primavera YSS OB220-360P-02-5-X with adjustable preload spring to replace the original part. Gas-emulsion shock absorbers absorb stresses better than the original hydraulic models thanks to the use of gas in combination with oil. They guarantee a more linear, precise and constant operation in all conditions. Wheelbase 360 mm, M10 upper pivot attachment and lower eyelet 10x30mm connection.