Featuring the 4-cylinder Genesis 4-stroke engine, industry-first Electric Power Steering (EPS) and Yamaha's unique EXUP exhaust system. The 150HP-class Genesis 150FI engine delivers mind-bending performance. When you let off the throttle, the EBRS helps you coast smoothly to a stop, rather than decelerating under engine braking. The radical Yamaha EPS system is the first ever found on a snowmobile and delivers easy, precise steering, enabling you to ride harder, faster, and longer while minimizing fatigue. An entirely adjustable suspension aboard the Apex provides a comfortable, personalized ride. The Apex is packed with Yamaha advantages for top mileage performance.