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

Factory Pro FP-O-AP0004 Faster Internal Gear Ratio Gear Set (for Tamiya T3-01)
Price:
£24.41
Brand:
Factory Pro
Model:
FP-O-AP0004
Condition:
Brand New
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Aftermarket internal ratio upgrade

The Factory Pro O-AP0004 kit is an internal gear ratio upgrade intended for the Tamiya T3-01 platform. It alters internal gear relationships inside the gearbox so operators can refine throttle behaviour and enhance low speed acceleration without altering external pinion or spur sizes.

Installation mirrors standard T3-01 gearbox maintenance: separate the transmission case, extract the stock internal gears, install the supplied gear set, verify correct gear mesh and endplay, and reassemble while checking bearings and shims. The kit is a tuning component rather than an external transmission replacement.

Specifications

  • Item: Internal gear ratio gear set
  • Material: Not specified
  • Model Number: O-AP0004
  • Compatibility: Tamiya T3-01

Supported Chassis

  • Tamiya T3-01

For those seeking a drivetrain-level tuning option for the T3-01, the Factory Pro O-AP0004 set provides a straightforward internal swap to change ratio characteristics; always confirm fit and bearing condition for reliable performance.

Is this compatible with all T3-01 spec variants?

It is designed for the standard Tamiya T3-01 internal gearbox layout. If your model has non standard internals check clearances prior to fitting.

Will I notice a change without changing the motor?

Yes, the internal ratio change alters throttle response and low speed traction often without the need for a different motor.

Should bearings be replaced when installing?

Inspect existing bearings; if they show wear or play it is prudent to replace them to ensure correct mesh and long service life.

How do I check endplay correctly?

With the gearbox half assembled, rotate the gear train while gauging axial movement and adjust shims until recommended endplay and gear mesh are achieved.

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