The ST4S bristles with our best race-derived components combined with all-day riding comfort. Start with the awesome Superbike 996 cc Desmoquattro engine, liquid-cooling, computer-controlled fuel injection, 11,5:1 compression, 50 mm throttle bodies and a six-speed transmission. Include the latest Showa forks, exclusive Öhlins rear shock and CAN line electronics. The result is a bike that excels on the street and the racetrack. The ST4S offers fully-adjustable Showa upside-down 43 mm forks with TiN treatment, as seen on the most exotic race bikes, lowering suspension friction to ensure accurate and responsive action. And for quick "situation tuning", the Öhlins rear shock features a remote spring pre-load adjustment system that allows you to easily adapt the rear spring to load weight. So whether riding solo or two-up with saddlebags full or empty, you are promised a smooth ride.