Tamiya T3-01 Drivetrain Internal Ratio Set by Factory Pro O-AP0004  [FP-O-AP0004]

Internal ratio option for precise tuning

The Factory Pro O-AP0004 kit is an RC internal gear ratio option intended for use on the Tamiya T3-01 platform. It adjusts the internal gearing relationship inside the gearbox so drivers can fine tune throttle response and low end acceleration without changing external gear sizes.

Installation follows the usual T3-01 gearbox routine: split the transmission case, remove the stock internals, fit the supplied gear set, check gear mesh and axial play, then reassemble while paying attention to bearings and shims. This set is meant for subtle drivetrain tuning rather than replacing external transmission components.

Compatible Chassis

• Tamiya T3-01

Builders seeking drivetrain-level adjustments for the T3-01 will find the Factory Pro O-AP0004 set an easy path to tweak internal ratio characteristics; always confirm fit and check bearing condition during the job.