This item is to extend a Thule WanderWay bike carrier to allow it to carry a 4th bike on a VW Transporter T6. Thule WanderWay 4th Bike Adapter - YouTube. Thule 911700 4th Bike Adapter. PA20-80, PH8-250, PL10-35, PO30-41, SY7-25, TD1-15, TR1-27, ZE1-3.
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