Gear Head Pop Quiz. Name the part in this photograph.

The ink pen is placed in the following photographs to give an indication of size. Write your answer in the comment box below and check back often to see the winning answer.

Click on any image to enlarge.

DSC_0137 DSC_0143 DSC_0141 DSC_0145


  1. Looks like a torsion bar, vs. valve spring, for supplying closing force to valves.

  2. Well done Chuck,
    It was used on the 1969 Honda 450


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