Type-X economy (XSG, XSO) ball bearings are specially made for competition models. They are all ready to race but still require maintenance.
XSG - 1/8 nitro off road.
XSO - 1/12 ~ 1/8 on road, 1/10 electric off road.
Low profile XSG ball bearings such as models R1212, 6702 etc... will not feel smooth when new due to the amount of grease inside but will smooth out once the bearings have been used.
Type : XSG
Ring Material : Bearing steel
ABEC Grade : 3
Balls : Grade 5 steel balls
Cage : Stainless steel 304
Shield Type : 2 x medium grey rubber shields
Lubrication : Grease
Includes 1pc of ball bearing per quantity, using aftermarket parts is always at your own risk.