Upgrade the rear axle of your 1/18 Traxxas TRX-4M with this Treal Hobby one-piece aluminum rear axle housing and differential cover. CNC-machined from aluminum, the solid one-piece construction provides a rigid foundation designed to reduce flex while maintaining precise fitment. The red anodized differential cover adds a distinctive aftermarket look, with black and silver anodized options also available. Included ball bearings support smooth operation within the axle assembly. This upgraded housing combines durable construction with a clean custom appearance for your TRX-4M.