Tamiya 84380 - F104 Carbon Integrated Diff Housing and Shaft Race Upgrade  [84380]

Track-Focused Carbon Diff for Smooth Rotation

The Tamiya 84380 - F104 Carbon Integrated Diff Housing and Shaft is a precision upgrade that replaces the standard rear shaft and diff housing in F104 chassis. The lightweight carbon rear shaft paired with an integrated housing reduces rotating mass and improves rotational consistency. By allowing the spur gear to sit closer to the joint, the unit produces noticeably sharper throttle response on technical circuits.

Design Details for Racing Durability

The integrated assembly takes cues from 1/12 pan car and TRF101 F1 layouts, moving away from set screw assemblies to a cleaner, more robust joint. Installation gives a tight fit and enhanced durability for high speed running and frequent direction changes.