The APRILIA SL is a sport-touring motorcycle produced by the Italian motorcycle manufacturer Aprilia. It is a high-end bike featuring a liquid-cooled V-twin engine and a four-valve cylinder head. The SL comes with a wide range of features including a six-speed transmission, traction control, traction mapping, ride-by-wire throttle, Brembo brakes, and a full fairing. It is available in various models and trim levels.