Pack of 2 units of black shock absorber, with a hole distance of 120mm. For installation on Smartgyro Speedway/Rockway/Crossover models, the length of the original shock absorber should be taken into account, which is 110mm. By having a longer length, the damping travel increases, making the suspension softer and improving shock absorption. However, it is necessary to replace the original kickstand with a slightly longer one, as the original one is too short and the scooter loses stability. Please find the result in HTML below: <p>Pack of 2 units of black shock absorber, with a hole distance of 120mm. For installation on Smartgyro Speedway/Rockway/Crossover models, the length of the original shock absorber should be taken into account, which is 110mm. By having a longer length, the damping travel increases, making the suspension softer and improving shock absorption. However, it is necessary to replace the original kickstand with a slightly longer one, as the original one is too short and the scooter loses stability.</p>