That is a re-issue regarding the hefty wheels which were originally released in 2013. They'll then add fat towards Mini 4WD machine, for less center of gravity and possibly more competition completions.
• HG Heavy Aluminum Wheels x2
• Wheel Bushings x4
• A set of two tires is just about 12 grams more substantial than standard equivalents.
• Try fitting the wheels on front side or rear (or one part) just, to have different effects on your own car’s performance regarding the track.
• Compatible with Mini 4WD and Mini 4WD PRO automobiles create to be used with low-profile tires.