These lightweight 13mm Aluminum Ball-Race Rollers feature superb durability and are equipped with 520 ball bearings to offer smooth rotation. In addition, these rollers have less friction against the course walls and can be used for both front and rear roller setups. This particular version uses parts that have a weight reduction of around 30% thanks to their shape and newly-bored holes. 13mm Aluminum Ball-Race Roller x2 Attachment screws included. Compatible with all Mini 4WD and Mini 4WD PRO chassis machines. Some chassis and bodies may require modification.
