Race-ready upgrade Tamiya 53900 Spur Gear Set 93T/104T for F103GT OP-900  [53900]

Fine-tune your F103GT with precise spur gears

The Tamiya 53900 - 04 Spur Gear set, offering 93T and 104T sizes, is a direct upgrade for F103GT builds. These gears use a finer tooth profile than standard 0.6 module gears, letting you dial in gear ratios more accurately for improved acceleration and on-track efficiency.

Smoother running thanks to molybdenum

The spur gears include molybdenum for reduced friction between teeth. That lower friction helps the drivetrain spin more freely and can translate to steadier throttle response and better component longevity when fitted correctly.

Pinion match and chassis fit

Designed to mesh with 0.4 module pinion gears such as the 53101, the 93T and 104T options fit F103 and related C Car chassis. That compatibility makes them suitable for racers who swap pinions to fine tune top speed versus acceleration.