Tamiya 53321 Boy's 4WD Lightweight Propeller Shaft Upgrade  [53321]

Lightweight Prop Shaft Upgrade for Boy's 4WD

For RC owners aiming for sharper on-track performance, the Tamiya 53321 lightweight propeller shaft reduces rotating weight on your Boy's 4WD to improve throttle response and balance through corners.

Why lower rotational mass helps

Reducing rotating mass lets the drivetrain accelerate faster, delivering crisper acceleration and more responsive handling on tight circuits. This Tamiya hop-up improves efficiency without requiring major changes to the build.

Fitment and straightforward installation

Installing the Tamiya 53321 is a simple task with basic hobby tools and common mechanical skills. It fits multiple Boy's 4WD variants and integrates into the stock drivetrain with minimal adjustment.