The RS Vector has been about the most reliable snowmobile ever built, not to mention one of the best handling sleds on the snow! For 2010 our goal was to improve the RS Vector every single aspect. To start there is a new version of the Genesis 120 FI (Fuel Injected) engine... a 3 Cylinder, 1050cc, 4-Stroke based on the Nytro. However… like the Venture GT, this engine is tuned specifically for trail riding, so it's super smooth with a lot of low-rpm torque. It has more power and torque throughout the entire power curve. Power delivery and clutch engagement are so smooth, this engine feels almost electric. Of course with fuel injection, cold starting is a breeze. You just turn the key. There's no choke to worry about. And this engine actually gets about 5% better fuel economy than the carbureted Vector! It also has Yamaha's exclusive E.B.R.S., or Engine Braking Reduction System. This system allows a small amount of air to pass through the fuel injection system when you let off the throttle, allowing the sled to coast a little. You still get the advantage of some engine braking, but on/off throttle transitions are much smoother making the sled even easier to ride.