The Stryker has an all-new steel frame that has ""open neck space"" to enhance that aggressive chopper look. The rigid mounting system improves the engine balance for better handling, less vibration and a better overall look. The frame houses a liquid cooled, 1304cc V-Twin beast of an engine. The liquid-cooling system has been artfully hidden in between the frames front downtubes. The liquid-cooling system keeps engine operating temperatures low and helps reduce engine noise for a more reliable and quieter engine. The new upgrades to this engine have increased fuel efficiency, durability and horsepower. The specially designed roller rocker system gives more valve lift without the added camshaft wear and tear. In addition, ceramic composite-plated cylinders provide uniform heat dispersion and reduce other sources of engine friction and weight. A Mikuni dual bore, 1.57 inch throttle body fuel injection system with a Throttle Position Sensor (TPS) and Idle Speed Control (ISC) use a highly efficient closed-loop system that measures the levels of spent exhaust and feeds back acquired information to the ECU to adjust the fuel/air ratio. This not only saves fuel but increases horse power and engine performance. The smooth shifting, five-speed transmission connects the new carbon-reinforced final belt drive and a wide 210/40-18 rear tire, delivering the loads of horsepower and torque this modernized V-Twin has to offer.