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Genesis® 80FI 4-stroke engine
The Phazer 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 uses a 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.
Ultra light, ultra rigid FX™ chassis
The Phazer is built on the FX chassis. It features lightweight, rigid CF diecast member and chromoly tube construction. The FX chassis was engi-neered 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.
Sport rider-forward position
The Phazer 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’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 also features lightweight extruded aluminum spindles.
To match the tall and forward position, a single-piece unhooked handlebar is standard on the Phazer. The grips have 10-position adjustable warmers.
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 minimize weight. Riders will appreciate the reduced overall weight on the Phazer and its amazingly nimble handling as a result.
CF die cast 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.
Rear tunnel closure
The rear hole on the Phazer tunnel is closed off for 2009 and the snow panels are eliminated. This will reduce the snow and ice buildup on the tunnel and runningboards. The front manifold hole will remain to cool the exhaust pipe. A heat shield will be installed to protect the seat and rear tail plastic.
Dual Shock™ rear suspension
The Phazer uses a Dual Shock rear suspension with a pair of KYB® gas cell shocks. The FX chassis uses a narrow track and the skidframe is accord-ingly 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.
KYB® gas cell shocks
The KYB® gas cell shocks on the Phazer’s double wishbone front suspension geometry deliver consistent performance with good fade resistance. They give the Phazer its nice, plush ride quality.
Tall, narrow YZ-style seat
The tall, narrow seat is an integral element in the sport rider-forward position position on the Phazer. It helps put the rider in the best possible location for aggressive or casual riding. The narrowness of the seat enhances the Phazer’s overall lightweight feel on the trail.
Standard electric start
Yamaha’s electric starter system allows consumers to fire up their Phazer 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.
The digital gauge displays key information at a glance. Vehicle speed is displayed on a large LCD. 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.
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.
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