Precision tuning pack - Tamiya 53379 3mm Lightweight Differential Ball Set for RC Cars OP-379  [53379]

Fine tune handling with the Tamiya 53379 3mm diff ball set

The Tamiya 53379 3mm Lightweight Differential Ball Set for RC Cars OP-379 delivers a simple weight-saving upgrade that can improve how your car reacts under acceleration and steering inputs. These smaller, lighter balls reduce rotational inertia inside the differential, helping to make gear engagement feel smoother and more predictable. Ideal for racers and track-focused hobbyists seeking tighter control.

Model fit and performance impact

Designed to suit many Tamiya gear differentials, this set works across a variety of models to lower the internal mass of the diff. The reduced inertia often translates into crisper acceleration, cleaner coast braking and more consistent power transfer during quick direction changes. Combine with the correct diff oil to tune slip and lock behavior.

Quick installation pointers

Swapping in the Tamiya 53379 balls is a straightforward job with basic tools. Remove the diff ring, replace the existing balls with these 3mm lightweight units, and reassemble while checking for smooth rotation. Inspect and re-grease or replace any worn shims or gears during the job to maintain long life.