Serious modders can swap in the Tamiya 42376 - 1260 sealed ball bearings to tighten up rotation and reduce unwanted drag. They are a straightforward way to refine rolling performance without major chassis work.
The 1260 sealed bearings fit a number of Tamiya chassis, notably the TG10-Mk.2 and TA02. Common installation points include the front and rear uprights where lower friction benefits steering precision and acceleration.
Blue rubber seals make these bearings easier to service than metal-sealed designs. Keep them clear of grit, use a light oil for lubrication, and inspect after impacts to avoid premature wear.
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