These are 11mm bowl-shaped (cup-style) aluminum bearing rollers.
By mounting them under the bumper or rear stay, they help the machine recover more easily if it rides up onto the track fence. They are especially effective when used in combination with a carbon-reinforced rear double roller stay.
[Basic Specifications]
Set includes two 11mm bowl-shaped aluminum bearing rollers and mounting screws
[Compatible Machines]
Mini 4WD PRO series
All Mini 4WD cars
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