How do I adjust the preload using the Shock Absorber Adjustment Ring?

To adjust preload on the YIKONG YK4061 Shock Absorber Adjustment Ring (26033) , turn the threaded ring clockwise to compress the spring (stiffer) or counterclockwise to release tension (softer). A key precaution is to adjust both front shocks equally and both rear shocks equally to maintain balanced handling on the 5.9kg crawler.