These are typically free back upright elements the TRF420 racing automobile framework.
• TRF420 E Parts x1
• Components are molded in carbon fiber-reinforced plastic for superior rigidity.
• Bearing roles are precisely aligned for optimum efficiency.
• to be used with 3mm diameter shafts (available in Item 51637).
• ideal for cars utilizing Item 51639 TRF420 D elements (suspension system hands).