Tamiya M03/M03L/M04M/FF02 Racing Bearing Set (2RS) M04M-05 by 3Racing  [M04M-05]

Performance bearing brief

Designed for on-road setups, this bearing set replaces stock units in hubs, differentials and drive shafts on Tamiya M03, M03L, M04M and FF02 platforms. The 2RS sealed construction preserves lubricant and limits ingress of debris, aiding consistent rotational performance under load.

Use the kit to lower parasitic drag and stabilise rolling behaviour when chasing tighter lap times or refining traction balance. Improved bearing condition reduces variable resistance that can mask suspension and tyre changes during tuning sessions.

Technical fitment notes: press bearings squarely into their bores using an appropriate driver or arbor press to avoid seal distortion. Verify axial float and radial freedom after install, and ensure housings are free of burrs that could damage the seal lip.

Service guidance: sealed bearings are supplied pre-lubricated and require less field attention, however inspect for roughness, axial play or lubricant leakage after heavy runs. Replacing degraded bearings is an efficient way to restore drivetrain efficiency without altering gear ratios or compliance settings.