For hobbyists chasing lower drag and steady drivetrain behaviour, the XRAY 940613 high-speed ball bearings are a practical upgrade. Each pack contains two 6x13x5 mm bearings designed to smooth rolling components.
The rubber-sealed construction helps keep contaminants away from the ball set and retains the factory lube. Pre-filled with AeroShell Fluid 12 oil, these bearings feature a higher count of larger balls in the cage to better resist loads and wear.
The removable side covers let you service the bearings easily, so cleaning and re-oiling is straightforward. Regular maintenance after heavy use will keep performance consistent.
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