04 Spur Gear 93T/104T, RC gear set, 0.4 module

The 04 Spur Gear 93T/104T set is a drivetrain tuning part for RC chassis that use 0.4 module gearing. With 93T and 104T spur gears in one pack, it supports finer ratio selection than the standard 0.6 module gear and opens up smaller adjustment steps when acceleration and running efficiency need closer control. Each gear uses a fine tooth profile that changes how the spur and pinion mesh, making this set useful when a standard ratio jump is too broad for the setup. Molybdenum in the gear material is specified to reduce friction resistance at the contact point, which supports smoother power transfer through the drivetrain. The set is intended for F103 and C Car chassis and is used together with 0.4 pinion gear #53101. That compatibility matters when preparing a chassis for different track layouts, motor characteristics or rolling conditions where a small gearing change can alter response. On a bench setup, the 2 tooth counts make back-to-back comparison straightforward because the gearing can be changed with a direct spur swap. On the track, that means a setup can be tuned toward sharper pull out of slower sections or toward a more efficient running balance across a full session.