Upgrade your Arrma 6S RC car's differential housing with this CNC-machined aluminum version. It fits 1/8 scale models like the Typhon, Kraton, Notorious, Outcast, and Talion, as well as 1/7 scale Mojave, Infraction, Felony, and Limitless. Replaces part numbers AR310427 and AR310854. The metal housing is stronger than plastic, reducing flex and improving gear alignment for smoother performance and less wear. Comes with bearings and screws for easy installation. You'll need one for the front and one for the rear, so order two if you're doing both. A popular upgrade for bashers who want more durability without breaking the bank.