Just put it in the front fork!
There are three kinds in one bag.

You can easily change the tension of the spring.
The car height and the stroke quantity are kept intact. only the parts exchange. the spring rate is changed
You can do it.
By using in combination with O-ring recommended by the manufacturer more corner feeling
You can experience the difference.

Ideal for rattling of the front fork.
Front flapping by backlash can be eliminated. and smooth switching can be done.
In addition. the stability of the front improves the rising response.