First, check whether the product provides 2-3 inches of increase requirements, some products only provide 2 inches of rise, barely use up to 3 inches, it is easy to pull the limit in the off-road to cause damage.
Second, whether the diameter of the telescopic rod of the center of the damper can reach more than 16 mm, which is a basic indicator of strength.
Third, whether the upper and lower connecting sleeves of the damper are high-strength polyurethane sleeves, which is also an important basis for ensuring long-term high-strength use, because ordinary rubber is difficult to use for a long time under high strength.
The shock absorber is mainly used to suppress the shock when the spring rebounds after shock absorption and the impact from the road surface. While passing through an uneven road surface, although the shock absorbing spring can filter the vibration of the road surface, the spring itself has a reciprocating motion, and the shock absorber is used to suppress the spring jump. The shock absorber is too soft, the body will jump up and down, and the shock absorber is too hard, which will bring too much resistance and prevent the spring from working normally.
In the modification process of the suspension system, the hard shock absorber should be matched with the hard spring, and the hardness of the spring is closely related to the weight of the vehicle. Therefore, the heavier vehicle generally adopts a hard shock absorber. Constant modifications are required during retrofitting to design the best combination of shock absorber and spring. Professional refit shops can generally find the best match for the owner.