BMW Motorrad. BMW Motorrad Parts. Drive Shaft. BMW Motorrad Potentiometer with wire, L = 300mm, for gearbox. R 1200 GS 04. R 1200 GS 08. R 1200 GS. We may withhold reimbursement until we have received the goods back or you have supplied evidence of having sent back the goods, whichever is the earliest.