The 3Racing F109 Aluminium Main Damper, model number F109-04/LB, is manufactured to support competitive setup work on the F109 chassis. The aluminium body reduces deformation under load and improves the consistency of shock action, aiding drivers who tune suspension geometry and damping settings for race conditions.
Using an aluminium main damper lowers compliance at the shock mount and yields clearer feedback when changing oil viscosities or spring rates. That stability helps with repeatable lap times and predictable mid corner behaviour when optimising front to rear balance.