Tamiya 15355 JR PRO High-Speed Gear Set - 4:1 MS Chassis Performance Upgrade  [15355]

Tamiya 15355 JR PRO 4:1 Gear Set Overview

The Tamiya 15355 JR PRO High Speed Gear Set is made for Mini 4WD builders who want sharper acceleration on MS chassis cars. With a 4:1 gear ratio, this set helps maintain pace through tight sequences and parts of the circuit where quick response matters most.

MS Chassis Compatibility and On-Track Effect

Designed for the Mini 4WD PRO line, this gear set fits the MS chassis only. Racers that find the standard 3.5:1 ratio sluggish on technical layouts will notice a livelier acceleration when using this 4:1 set. Pairing it with a high-rev motor such as the REV-Tuned yields the most responsive performance gains.

What Comes in the Kit and Practical Use

The package includes two G19 (blue) counter gears and two G20 (orange) spur gears. These parts are handy as direct replacements for worn components and let you test alternative gear ratios without changing the whole car. It is a cost-effective upgrade for racers experimenting with speed and response.