The BMW R1150GS and R1150GS Adventure are motorcycles that were manufactured by BMW Motorrad from 1999 through 2004. There was a limited run of 2006 model year R1150GSA models as well. The R1150GS models are part of the BMW GS family of dual-sport or adventure motorcycles that have been produced from 1981 to the present date. The R1150GS Adventure had a number of differences over the standard bike to make it more suitable for overland and adventure travel. These included an optional 30-litre fuel tank, larger screen, single-piece seat, 20 millimeters taller suspension front and rear, lower first gear and a conventional sixth gear in place of the standard model’s overdrive gear. An anti-knock sensor adjustment change allowed the adventure version to run on lower quality gasoline as well. Common options on both models were heated handgrips and ABS brakes.