BMW OEM Drive Belt made by Continental
Don't be fooled by the marketing!
Continental being the official supplier of BMW, motorcycles are fitted with these same belts and if you need to buy a new one from a BMW dealer, you will have the exact same belt, but in a BMW box.
Same manufacturer, same quality, much lower price.
Your main dealer would charge you £386 for this belt.
OEM part number: 27727719371
34 mm wide