RPM recommends thread tapping (tap not included) the hole for 3-4 threads

Powerhobby Hardened Steel 38T Mod1 5mm Pinion Gear with 2 Grub Screws

consistent suspension performance

Measurements: 4-1/2x3-7/8x3-3/8" 11

Arrma ARA330558 Steering Knuckles (1 Pair) Kraton 4X4 8S Outcast 8S Mojave 6S Parts RPM recommends thread tapping (tapArrma ARA330558 Steering Knuckles (1 Pair) Kraton 4X4 8S Description Genuine ARRMA composite steering knuckle set designed as a direct replacement for select ARRMA 1 5 scale 8S vehicles. The tough composite construction provides increased crash resistance, while molded in metal reinforcement adds strength around the pivot ball cups. Precision pivot ball housings help provide smooth suspension and steering operation in demanding conditions. Features