Track-tuned Tamiya 53900 Spur Gear Set 93T/104T for F103GT OP-900  [53900]

Track-focused spur gear upgrade for F103GT

The Tamiya 53900 - 04 Spur Gear set includes 93T and 104T choices that upgrade the F103GT drivetrain. With a finer tooth pitch than the common 0.6 module gears, these options let you refine overall gearing for better starts and lap-to-lap consistency.

Benefits of molybdenum-treated teeth

Molybdenum is used in these spur gears to lower friction across gear faces. That results in smoother gear engagement and can improve drivetrain efficiency under sustained running.

Compatibility notes

These spurs are cut for 0.4 module pinions, such as part 53101, making them compatible with F103 series and C Car chassis types. They are a practical choice for anyone swapping pinions to tune acceleration or top speed.