Steel Helical Diff Ring Pinion Overdrive for Traxxas TRX-4 (HRATRXF9312)

The Steel Helical Diff Ring and Pinion Overdrive for Traxxas TRX‑4 is an aftermarket drivetrain upgrade designed to fit the Traxxas TRX‑4 crawler. It replaces the stock differential ring and pinion with a steel, helical gear set to deliver an overdrive that optimizes power transfer to the wheels.

Constructed from steel with a helical gear design, this upgrade emphasizes durability and smooth engagement for demanding crawling. It is designed for Traxxas TRX‑4 models, offering a practical way for RC enthusiasts to boost traction and control on rugged terrain.