HPI Racing SAVAGE XL FLUX Front C Hub and Rear Knuckle King Pin Screws SAVF004S by GPM  [SAVF004S]

Steadier steering with stainless king pins

This 4pcs set of stainless steel king pin screws is made for the HPI Racing SAVAGE XL FLUX platform to lock the front C hubs and rear knuckles together. These fasteners reduce play between the C hub and knuckle arm, producing a firmer steering feel and more consistent steering angle when the model is under load.

Installation notes: the screws use M4 thread and are driven with a 2.5mm hex driver. The king pin shaft is unthreaded where it passes through the body with a diameter of 3.98mm and a total length of 21mm, matching the physical form factor required for the C hub and knuckle mounting points. Use correct thread engagement and a standard RC threadlock if your setup needs it.

Tuning role: replacing the original hardware with these stainless pins reduces flex and gap at the hub joint, which helps when you are dialing in steering response or running firmer suspension settings. These parts are intended only for model use on the specified chassis.