Related Clues:
- Support shaft
- Device for rotating one's tires?
- Assembly line add-on, perhaps
- Highway toll unit
- It may have a linchpin
- Wheel connection
- Drivetrain connection
- Wheel supporter
- Revolutionary car part?
- A semi lacks a front one
- It's rigid on trailer trucks
- Shaft under the floorboard
- Drivetrain component
- Bar between Pirellis
- Linchpin's setting