Tamiya Mini 4WD Tune-Up Sets: All Four Compared
Tamiya sells four Mini 4WD Tune-Up Sets: one universal, three chassis-specific (AR, MA, VZ). What each contains, and when a bundle beats buying parts alone.
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Browse available alternativesA pair of 17mm-diameter aluminum rollers with a tapered, inverted-cone profile that helps a car slide back down onto the track if it rides up onto a course fence, rather than staying hung up on it. Each roller has a 520 bearing pressed in for smooth, low-friction rotation. The set includes the mounting screws and spacers needed to fit them.
Despite the 17mm outer diameter, each roller stands only 5mm tall and weighs about 1.3g, keeping the added rotating mass modest compared with a similarly sized roller that lacks the tapered cutaway. Tamiya's own parts-pairing suggestions pitch it alongside the 17mm Plastic-Ring Aluminum Ball-Race Roller (Dished, Red) and the HG Carbon Rear Wide Stay (1.5mm). As a standard HG (High Grade) roller in Tamiya's ongoing catalogue rather than a tournament-exclusive item, it stays in production rather than being a one-off release.
Tamiya sells four Mini 4WD Tune-Up Sets: one universal, three chassis-specific (AR, MA, VZ). What each contains, and when a bundle beats buying parts alone.
Eight real Mini 4WD case and storage SKUs, each built for something different: motors, batteries, small parts, or a full pit day. Match one to your fleet size.
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