The GPM MAN022 rear knuckle arms are produced from 6061T6 aluminium to provide a stiffer, more consistent mounting point than stock plastic arms on the ARRMA NERO 6S BLX. The geometry reduces lateral movement and helps maintain accurate toe and steering angles during hard use. Delrin collars are included to lower bearing pressure and preserve controlled compliance in the suspension links, improving part longevity and predictable handling.