HPI Racing SAVAGE XL FLUX Stainless Steel King Pin Screws For Front C Hub And Rear Knuckles-4pc set - GPM SAVF004S  [SAVF004S]

Stabilize the C hubs and knuckles, improve the steering angle of the knuckles.
Minimize the gap of the C hubs and knuckle arms to achieve better stability and more smooth.

M4 thread - 2.5mm Hex, King pin no thread body 3.98mm, Total Length 21mm