Does this product replace a specific part or function? Yes
Product major function & usage: Reduce the friction and absorb the pressure during driving so that the vehicle can balance better.
Is this part adjustable? If yes ¡¦ how and why/purpose? How: Adjust the top spring retainer and red screw at the bottom of negative pressure oil cylinder. Purpose: To adjust the hardness of the spring damper.
Major advantages of upgrading to this product: (1) The coil is thickened from 1.8mm to 2mm to provide more power (origianl spring can also fit if a less hard spring is needed). (2) Damper shaft is thickened from 3.5mm to 5mm in order to be more sturdy and prevent bending. (3) Aluminum 6061-T6 body with shock-absorb cap to seal tightly and avoid leaking. (4) L shape piggy back with built-in piston spring can adjust the rebound force, so the pressure load effect is better.