In 2010, BMW Motorrad used two basic engines for their single-cylinder G series. The smaller engine, used on the G450X, is a 450cc four-stroke that produces 41 horsepower, and 31.6 ft. lbs. of torque at 6,500 rpm. The larger engine, a 652cc four-stroke that generates around 53 horsepower and 44 ft-lbs. of torque at 5,250 rpm, is used on the G650GS and the G650X bikes. These numbers are not as impressive on paper compared to bikes like the BMW S1000RR, but considering how light these enduro bikes are, and that they will mostly be ridden across challenging off-road conditions, these single-cylinder engines provide plenty of power for their intended use.