Tapered 13mm, 17mm and 19mm rollers are popular sizes to use on racing set ups. This new 11mm option further expands set up possibilities! They will improve your car’s chances of finishing the race by helping it regain the course if it gets up onto the lane wall.• 11mm Aluminum Ball-Race Rollers x2• Small parts for attachment are included.• The bowl design acts like a tapered roller, helping the car slide back down if it gets up and onto the lane wall.• Recommended for use with Item 15412 Carbon Reinforced Rear Double Roller Stay (3 Attachment Points), which lets you install them in a wide position just inside the Mini 4WD regulation limits.• Some advanced racers also use these on top of 13mm rollers as a type of rotating stabilizer.• Compatible with Mini 4WD and Mini 4WD PRO cars. NOTE: Some bodies may require modification.
