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Genesis® 80FI 4-stroke engine The Phazer RTX uses a 2-cylinder, 500cc engine for its performance. The engine package is based on the YZ250F™ engine. It’s actually two of them engineered together to become a potent, compact snowmobile engine. The Genesis 80FI is fuel injected, with a 5-valve head and makes its peak power at over 11,000 rpm. Advanced fuel injection The Genesis 80FI uses an advanced fuel injection system to control fuel flow to the engine. Consumers will enjoy the engine’s spot-on performance and throttle response as a result of the advanced electronic fuel injection system. Lightweight, counterbalanced crankshaft The Genesis 80FI engine’s crankshaft is designed to be light weight, responsive and durable. The lightweight, counterbalanced crankshaft delivers super-crisp throttle response and quick acceleration. It also helps mitigate the vibration inherent in a 2-cylinder engine. Lightweight, rear-exiting exhaust The exhaust from the Genesis 80FI is routed out the rear of the sled, similar to the other Genesis 4-stroke engine packages. The rear exiting exhaust design serves three purposes. First, it keeps the exhaust heat out of the engine bay to allow a super-compact design. Second, it allows the engine to breathe more efficiently and through a cooled exhaust pipe. Finally, it helps to balance the overall sled package, giving the Phazer its amazingly nimble handling. 14x121x1 inch Camoplast® Rip Saw™ track The Phazer RTX a new 14-inch wide Camoplast® Rip Saw™ track with 1-inch lugs. The track design is lighter than a traditional 15-inch design for improved performance and handling. It also allows the tunnel to be narrower to contribute to the sled’s ergonomics. Radiator and front extrusion In order to generate consistently-strong engine performance, all Genesis 80FI sleds feature a small radiator on the right hand side of the engine cab and a front extrusion. The use of a small radiator improves the sled’s cooling system function, which means greater engine durability. It also enhances the sled’s handling by relocating the mass of a rear heat exchanger up to the central portion of the sled.  Handling Ultra light, ultra rigid FX™ chassis The Phazer RTX is built on the FX chassis. It features lightweight, rigid CF diecast member and chromoly tube construction. The FX chassis was engineered specifically to house the Genesis® 80FI engine and incorporates that engine package in its overall balance dynamic. The FX chassis is also the backbone for the sport rider-forward position on the Phazer RTX. Sport rider-forward position The Phazer RTX takes many of its cues from other off-road motorsports, including its sport rider-forward positioning. It has a tall, narrow seat and tall, forward handlebars like the popular YZ® dirtbike. It puts the rider in a pure sport posture, without being overly aggressive. The sport rider-forward position also locates the mass of the rider right at the balance point for the sled, aiding its incredible handling. Double wishbone front suspension The FX chassis uses a specifically engineered front suspension package to accommodate its unique weight distribution and handling needs. Because of the Phazer RTX’s naked front end design, the A-arms need to be longer than even the second generation design found on the Deltabox™ II chassis models. The Phazer RTX also features lightweight extruded aluminum spindles. Wide, hooked handlebars To match the tall and forward position, a single-piece, dual-hooked handlebar is standard fare on the Phazer RTX. The hooks have the same grip material as the main bar section, for consistent control, regardless of hand position on the grip. Integrated chaincase with magnesium cover The FX chassis has the chaincase cast right into the frame member, and has a magnesium cover plate that forms the seal to keep the oil in. This trick piece of technology is a highlight of the goal to simplify the sled and eliminate weight. Riders will appreciate the low overall weight on the Phazer RTX and its amazingly nimble handling as a result. CF diecast construction Yamaha’s Controlled Flow casting technique is used for many of the structural pieces on the chassis. The CF process draws the molten metal into the mold under a vacuum, reducing the formation of air bubbles in the material. As a result, pieces can be made much thinner and still deliver the strength characteristics of a conventionally-cast, thicker piece.  Comfort Dual Shock™ CK rear suspension The Phazer RTX uses a Dual Shock CK rear suspension with an HPG clicker shock. The FX chassis uses a narrow track and the skidframe is accordingly narrower. The suspension offers a number of unique features, in addition to the narrowness. The carrier wheels on the rear upper cross shaft are oversized to improve their efficiency and reduce friction as compared to a small wheel design. The rear mount is built with a cantilever system to allow the track tension to remain consistent through the compression travel. The rear arm has coupling blocks. The front lower shock mount is on a cam to increase the shock rate through its travel. Fox™ FLOAT™ shocks Fox™ FLOAT™ shocks use an air spring designed to force the piston to rebound. This eliminates the need for steel coil springs. They cut three pounds off the sled’s overall weight, as compared to traditional coil over springs. They are individually tunable by using a pocket-sized air pump, which comes with the sled. Tall, narrow YZ-style seat The tall, narrow seat is an integral element in the sport rider-forward position on the Phazer RTX. It helps put the rider in the best possible location for aggressive or casual riding. The narrowness of the seat enhances the Phazer RTX’s overall lightweight feel on the trail. Standard electric start and push-button Electric Shift reverse Yamaha’s electric starter system allows consumers to fire up their Phazer RTX with a turn of the key. The engine’s decompression system lightens the load required to turn the engine over, allowing a small, light battery to be used. Yamaha’s Electric Shift reverse system lets users to shift the sled into, and out of, reverse with the touch of a button on the digital gauge. Digital gauge The digital gauge displays key information at a glance. Vehicle speed is displayed on a large LCD readout either in miles or kilometers per hour. In addition, the rider can select tachometer, odometer or tripmeter data to appear on secondary readout. The gauge also displays system warning lights, fuel level, warmer intensity. The right hand side of the gauge has the push button for the electric shift reverse system. To-the-end grip warmers The single-piece handlebar features hand warmer heating elements which extend from the throttle block or brake cylinder block all the way to the ends of the hooks. This gives consumers a wide grip area with ample warmth. The hooks have the same grip material as the main bar section, for consistent control, regardless of hand position on the grip. Snow panels The Phazer RTX features new snow panels to close off the space between the bottom of the seat and the top of the tunnel. These pieces enhance the look of the sled, giving it a refined and finished appearance.