2018 Yamaha YZF-R1S, 2018 Yamaha YZF-R1S R WORLD - YOUR STREETS The R1S was designed to compete but built for the street. Features may include: Cutting-edge MotoGP®-Derived Crossplane Crankshaft Engine The YZF-R1S® features a lightweight and compact crossplane-crankshaft, inline-four-cylinder, 998cc high output engine, producing excellent power and a strong pulse of linear torque for stunning performance. Class-leading Electronics Package The YZF-R1S features an advanced MotoGP®-inspired electronics package: a suite of inter-related technologies, powered by Yamaha s six-axis Inertial Measurement Unit (IMU), that enable the rider to enjoy the fullest range of performance with great comfort, control, and ease of operation. Informed Systems The IMU 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. By calculating each signal, the IMU finds the precise vehicle position and movement, and communicates it to the ECU, enabling it to control the bike s systems. Digital Rider Aids The YZF-R1S is equipped with banking-sensitive Traction Control, as well as Slide Control, Wheel Lift Control, Launch Control, ABS, a Unified Braking System, and more. This gives R1S riders an amazing level of rider-adaptive performance. Deltabox® Frame The advanced aluminum Deltabox® frame uses the engine as a stressed member of the chassis and is designed to provide optimum longitudinal, lateral and torsional rigidity. Compact Exhaust System A midship exhaust system features a titanium muffler and is positioned low, in the middle of the chassis, for improved mass centralization. MotoGP® Styling The styling on the R1S is shared with the YZF-R1M® and YZF-R1® and inspired by the YZR-M1®, purposely sculpted for maximum aerodynamic efficiency.