For use with these items:
This unit is just under 4 inches long and not quite 3 inches in diameter. It is constructed of polished stainless steel.
If you have our Zega aluminum panniers and have not removed the inner baffle from your muffler, you do NOT need this part.
If you have Zega panniers and the inner baffle has been removed from your muffler, then you do need this part to protect the turn signal.
If you have BMW plastic panniers, you NEED this part. You also need the BMW heat insulation for your plastic cases. This is BMW Part Number: 46542316611