A sport touring motorcycle (sometime a "sports-tourer") is a type of motorcycle that combines the performance of a sport bike with the long-distance capabilities and comfort of a touring motorcycle.
The first sport-tourer is said to be the fully faired 1977 BMW R100RS. Journalist Peter Egan defines the sport-tourer as a "café racer that doesn't hurt your wrists and a touring bike that doesn't feel like a tank," and identified the R100RS as the first example he owned.
When designing a sport-tourer, some manufacturers make economies by using an existing engine, technology and tooling from their recent sport bikes, rather than creating a dedicated engine design from scratch. Sport-tourer engines could be detuned versions of its sport bike sibling, the emphasis becoming mid-range torque rather than peak horsepower. For example, the Triumph Sprint motorcycle shared its engine with the Daytona, Speed Triple, and Tiger models; and Ducati's ST4 sport-tourer used the 916's motor. The sport-tourer Aprilia SL1000 Falco used a detuned version from the Aprilia RSV Mille sport bike. As consumer expectations changed, some sportbikes were redefined (for marketing purposes) as sport touring bikes: the 2000 Kawasaki ZX-6R sportbike became the 2004 ZZR600 with just a change to a fairing bracket.
A touring motorcycle is a type of motorcycle designed for touring. Although any motorcycle can be used for this purpose, manufacturers have developed specific models designed to address the particular needs of these riders. Touring motorcycles commonly have large displacement fairings and windshields that offer a high degree of weather and wind protection, large-capacity fuel tanks for long ranges between fill-ups, engines with a great deal of low-end horsepower, and a more relaxed, upright seating position than sport bikes. Bagger, full bagger, full dresser, full dress tourer, or dresser are various names for touring motorcycles, sometimes used disparagingly or jocularly, and originally referring to a Harley-Davidsons or other cruisers with full sets of saddlebags, panniers and other luggage. Now these terms can refer to any touring motorcycle.
Full-dress touring motorcycles are generally characterized by extremely large fairings and ample bodywork compared to other types of tourers. Hard luggage, e.g. panniers and a top box, are integrated into the design of the motorcycle which usually has a very large displacement, torquey engine with a very upright, comfortable riding position.