The ASR hollow bar can be used only with the ASR hollow swaybar subframe brace kit.
.095 Hollow Swaybar (Bumpy Track/Hi-Speed Course)
.120 Hollow Swaybar (Longer wheel base vehicle, Short Technical Course)
.188 Hollow Swaybar (Autocross/Mid-Speed Course)
.250 Hollow Swaybar (Autocross/Low-Speed Course)
Select application and wall thickness above.