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The backrest lower frame attaches between the optional BMW clamping unit (middle of pic with keylock) and flat rack (top rack in pic). The unit assembly is quickly removeable by key. See below.
Backrest requires BMW's luggage rack (#71 60 2 337 056), hard-bag mounts (#46 54 2 337 241), luggage plate (clamping unit) and plate (flat rack) (kit #71 60 2 337 149). For safety and security, you should also purchase the optional keylock. Note: the ...056 rack (lower silver rack in pic) may have been an OEM rack on your bike when new.
Your passenger can lean back with confidence with any of our sturdy backrests. They all include a useful zippered pouch for small items. Marine vinyl is used for the pad and pouch for maximum weather resistance. All parts are manufactured from aircraft quality 6061 aluminum alloy and are black powder-coated with some parts black anodized. Fasteners are black-zinc plated to resist corrosion. There are no holes to drill. Each backrest includes all necessary hardware, brackets and installation directions.