These are Double Aluminum Rollers that are used for Mini 4WD racing machines. They are used to tune the Mini 4WD chassis to achieve better stability and higher cornering speeds. This particular version is a limited-edition variant which is lightweight compared to the previous releases.
• Around 10% lighter than standard equivalents (Item 15403)
• Lightweight Double Aluminum Rollers x2
• 520 Ball Bearings x4
• 2x20mm Screws x2
• Brass collars and small parts for attachment included.
• Compatible with Mini 4WD and Mini 4WD PRO cars