Advanced Crossplane Crankshaft Concept Engine The XSR900 features a thrilling 847cc liquid-cooled inline 3-cylinder, DOHC, 4-valve-per-cylinder Crossplane Crankshaft Concept engine based on the FZ-09. With a 78mm x 59.1mm bore and stroke and 11.5:1 compression ratio, the compact motor produces a torquey and quick-revving engine character.
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Advanced Ride-by-Wire Throttle with D-MODE The XSR900 is equipped with Yamaha’s Chip Controlled Throttle (YCC-T) for precise throttle control, as well as Yamaha’s selectable D-MODE, which allows the rider to adjust engine character on the fly. STD Mode is set to accommodate a wide range of riding conditions, A Mode gives the rider a sportier throttle response in the low-to mid-rpm range, and B Mode lets the rider enjoy a softer throttle response.
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Adjustable Traction Control The XSR900’s Traction Control System lets the rider get on the gas with more confidence, by regulating ignition timing, fuel injection and throttle valve opening based on wheel speeds. Three modes are available: Mode “1” is for minimal intervention, Mode “2” is for maximum intervention, and “OFF” switches the system off entirely.
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Vibration Reducing Counterbalancer To reduce vibration and provide a smooth, modern engine character, the motor uses a geared counterbalancer that revolves in the opposite direction as the crankshaft.
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Fracture-Split Connecting Rods Just like Yamaha’s racetrack-developed supersport models, the XSR900 makes use of fracture-split connecting rods for the ultimate in precision and performance. The fracture-split method splits the big-end ring of a connecting rod in two by applying a sharp impact, to create a perfectly matching surface when it is bolted around the crankshaft.
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Unique Staggered Intake Funnels To create the XSR900’s potent mid-range torque and unique intake sound, the engine’s intake funnels have been designed with three uneven lengths. Combined with the YCC-T system, the XSR900 gives its rider the ‘right-now’ thrust ideal for street riding.
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Compact 6-Speed Transmission The XSR900’s 6-speed transmission takes full advantage of the low-to-mid-range torque and excellent response of the inline triple, while further enhancing the narrow 3-cylinder design.
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Assist-and-Slipper Clutch The XSR900 includes an advanced assist-and-slipper clutch unit that provides both greater clamping force and back-torque reduction. This allows for the use of lighter clutch springs - reducing clutch lever effort by 20% - as well as minimizing rear-wheel hop under aggressive deceleration.
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