There is no need to install the front spring, just install the rear spring to solve the problem that the seat barrel cover cannot -up Easy to install, installation instruction not included The spring is made of Metal Increased convenience for car owners, greatly solving the problem that the seat cushion cover cannot be popped up Fitment: For Xmax125 For Xmax250 For Xmax300 For Xmax400 Colour:black+silver Material:Metal Package Contents: 1 set x Buffer Spring of Cushion Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.