1 Installation problems
It might be caused by looseness of the locknut and the bolt on the upper part.
2 Wrong installation sequence
If it is not installed following the installation numbers, it will cause abnormal sounds.
1 Tighten the locknut according to the torque mentioned in the Installation Instruction Manual and the installation status (installation sequence, directions, falloff, etc.) of each component and looseness of the lockcnut. (Tightened in 1G state)
2 If there are any damage of the outer tube or any sign of contact with vehicle body, it might be the installation sequence problem. Install the product by following the correct installation sequence.
Even the installation is correct, the abnormal sound might happen caused by the contact between the product and the vehicle body due to the wrong stock and dimension size of the product.
Even if there is no abnormal sound at the initial stage of installation, the looseness of the mounting portion after a certain time of running might cause abnormal sound. Moreover, incomplete installation (the some parts are missing, incorrect installation etc.) of the bracket components might cause abnormal sound.
The upper bracket, coil spring, and the shock absorber altogether determine the mounting direction. Please unify the directions of these parts. In particular, please pay attention not to cause a deviation between the front end of the spiral portion of the original coil spring and the hole of the coil spring washer.