Tamiya 95311 - Precision 13mm Guide Roller Ball Bearings II (6 pieces) for Mini 4WD  [95311]

Dial in smoother lap times with precision 13mm rollers

For racers wanting a measurable upgrade, the Tamiya 95311 13mm Diameter Guide Roller Ball Bearings II replace basic plastic rollers with precision steel-cased bearings to improve smoothness and stability on the track.

Fitment and performance details

This kit contains six ball bearing rollers with an outer diameter of 13mm, inner diameter of 5mm, and thickness of 3mm. Those exact dimensions give a precise fit and enable freer rotation, which helps maintain speed and control. The steel casings add strength for regular track use.

These rollers work with Mini 4WD and Mini 4WD PRO cars and suit common chassis types such as MS, MA, and AR, so you can use them across multiple builds.

Simple swap for better handling

The package ships with spacers and screws needed for mounting, making installation straightforward. Swapping plastic rollers for these bearings often yields noticeable improvements in cornering and momentum retention.