The Lambretta Li TV Series 1/2 Adjustable Load Rear Shock is a high-performance modification part designed for the scooter enthusiasts.This suspension component offers enhanced handling and control for a smoother ride,this shock absorber is a reliable choice for those looking to upgrade their Lambretta's suspension. Filled with Castrol shock oil and fully repairable,not a throwaway like others for sale. (10mm Spring ideal for pillion passengers) 310 to 320mm eye to eye.