2018 Yamaha YZF-R1S, 2018 Yamaha YZF-R1S R WORLD - YOUR STREETS The R1S was designed to compete but built for the street. Engine Cutting-Edge Crossplane Crankshaft Engine The R1S’ 998cc in-line 4-cylinder, crossplane crankshaft engine features steel fracture-split connecting rods and lightweight forged pistons. This race-derived engine delivers high horsepower and a strong pulse of linear torque. Compact Stacked Transmission A 6-speed transmission is built to match the engine’s delivery and character for excellent response. The transmission "stacks" the input/output shafts to centralize mass and to keep the overall engine size shorter front to back, which optimizes engine placement in the frame for outstanding weight balance. Electronics MotoGP®-Level Controllability Inertial Measurement Unit (IMU) uses six axes of measurement: It consists of a gyro sensor that measures pitch, roll, and yaw, as well as an accelerometer, or G-sensor, that measures acceleration in the fore-aft, up-down, and right-left directions… all at a rate of 125 calculations per second. The IMU communicates with the ECU, which activates the technologies in Yamaha Ride Control (YRC). YRC includes Power Mode, Traction Control System, Slide Control System, Lift Control System and Launch Control System. All these systems are adjustable and can be saved within four presets in the YRC system. PWR Mode Power Delivery Mode (PWR), similar to the earlier “D-Mode” system, lets the rider choose from four settings of throttle-valve opening rate in relation to the degree of throttle-grip opening to best match their riding conditions. Chassis/Suspension Full Color Instruments The R1S features a brilliant full-color, thin-film transistor LCD meter, including front brake pressure and fore/aft G-force readouts, giving the rider even more feedback from the machine. It features both street mode and a track mode that focuses on performance information, such as YRC settings, a zoomed-in view of the tachometer in the upper rpm range, a lap timer with best lap and last lap feature, gear position indicator and speed. Deltabox® Frame The aluminum Deltabox® frame and magnesium subframe contribute to a light weight and compact chassis design. The aluminum frame is both strong and flexible, and uses the engine as a stressed member of the frame for optimal rigidity balance and fantastic cornering performance. Additional MotoGP® Styling Dynamic “M1” inspired styling that creates a more compact profile with improved aerodynamics. Compact LED Headlights LED headlights are both lightweight and compact allowing for a more streamlined design and layout of the front face.