The Product Information Bulletin lists the following;
BMW Motorrad special accessories can be installed by authorized BMW Motorrad dealers or by customers themselves.
Special accessories.
• Tank Bag with attachment system.
• Rear bag with attachment system.
• Kneepads for tank sides.
• Aluminum tail cover with padded backrest.
• Custom rider’s seat with R nineT logo.
• Comfort rear seat.
• HP Carbon cover for engine block.
• HP Carbon front fender.
• Titanium Akrapović exhaust system.
• Connector pipe, long, with bracket and cover for Akrapović silencer/muffler, high-mounted.
• Connector pipe, short, for Akrapović silencer/muffler, low-mounted.
• Mount for standard Akrapović silencer or accessory rear silencer/muffler (low-mounted), if pillion seat removed.
• Anti-theft alarm system.
• Heated grips.
• LED turn signals.
• Mounting cradle for BMW Navigator, with connection to electrical system.
I thought I also read somewhere in the factory info that Anti-theft alarm system is strangely the only possible factory option.