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- Genesis® 150FI 4-stroke engine
The Genesis 150FI 4-cylinder engine is designed to build high horsepower and keep weight low. It cranks out 150hp-class performance. The engine’s high-tech fuel injection system delivers quick, crisp throttle response and as a bonus it runs significantly cleaner than many snowmobile engines on the market today. - Advanced fuel injection system
The high tech, low-pressure fuel injection system uses an injector and butterfly valve throttle body on each cylinder to aid in delivering outrageously crisp throttle response, 150 horsepower production and excellent fuel economy. - Lightweight rear-exiting titanium exhaust
The exhaust pipes coming out of the Genesis 150FI engine are configured in a 4-2-1-2 design. The exhaust, featuring titanium head pipes, adds to the engine’s higher output and also reduces weight. The patented rear exit design serves many performance-enhancing functions. First, it cools the pipe by running it down the tunnel, where it can be snow-cooled. Second, it reduces the amount of under-hood heat produced. Third, the rear-exiting design distributes weight for a finely balanced sled. - Lightweight forged crankshaft
The forged crankshaft in the Genesis 150FI is 2.2 pounds lighter than the original crankshaft design in the Genesis Extreme. This is a large contributing factor in the Apex RTX’s razor-sharp throttle response. - 15x121x1.25-inch Camoplast® Rip Saw™ track
The Camoplast Rip Saw track is a standard feature on the Apex RTX. It has been widely acclaimed in the industry as the best all around OEM track for acceleration, cornering bite and everyday trail usage. The Rip Saw track is the result of a collaborative effort between Yamaha and Camoplast.
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- Deltabox™ II with comfortable rider-forward position
The primary design objective of the Deltabox II chassis was to create a comfortable rider-forward posture. The ergonomic treatment is achieved by moving the handlebars forward by 6 inches and raising them by 4 inches. The seat is also roughly 2.5 inches taller and the seated position is 8.375 inches forward of previous models. With this positioning, the rider can go from sitting to standing and back again easily and comfortably. It also further centralizes the combined mass of sled and driver, for razor-sharp handling. - Second generation front suspension geometry
The geometry of the second generation front suspension features short spindles and long A-arms. The suspension was engineered to deliver excellent cornering stability and consistent turning effort throughout its travel stroke. It delivers 9 inches of vertical travel and sets the skis at 42 inches. Steering is consistent, because the spindle caster is maintained at a constant 23 degrees. - Tall, wide, hooked handlebars
To match the tall and forward position, a single-piece, dual-hooked handlebar is standard fare on the Apex RTX. The hooks have the same grip material as the main bar section, for consistent control, regardless of hand position on the grip.
- Integrated airbox/small hood
The design on the Apex RTX is very efficient, often integrating many functions into one component. One such example is the use of the airbox as a part of the hood design. The upper element, closest to the headlight, is comprised of the silencer cover for the airbox. This design feature allows for a significantly smaller hood piece, which reduces weight. - Magnesium chaincase
The Apex RTX features a lightweight magnesium chaincase. The exotic material cuts a pound from the previously used aluminum chaincase on other models. - Saddleless plastic skis
The saddleless plastic ski offers low unsprung weight and its aggressive keel design provides strong bite to help the Apex RTX corner.
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- ProActive™ CK torsion spring rear suspension
The Apex RTX model uses the ProActive CK torsion spring rear suspension. After extensive testing and competing in the USCC circuit, the ProActive suspension delivers the best performance for ripping it up through the moguls. Riders can preload the suspension at the base of road approaches or moguls and pop over them with a little squirt of throttle. The Apex RTX’s ProActive skid is designated CK for its clicker-adjustable remote reservoir shock in the rear. Owners will have 20 clicks of compression damping adjustment to tune the best ride for themselves. The ProActive CK offers 11.5 inches of vertical 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, lightweight seat
The Apex RTX’s lightweight seat features a roomy cargo space. The height of the trail seat makes it even easier to go from sitting to standing, while the firm foam provides extra comfort. It features a color band to match the sled’s lines and graphics. - Wide runningboards with star-punched traction
The Apex RTX’s wide runningboards feature star-punched traction throughout their entire length. The boards also have an outer traction roll for additional sure footing. As an added benefit, the traction holes help evacuate snow and slush from the runningboard, delivering additional confi-dence and comfort. - Digital gauge with extensive data features
The Apex RTX features a digital gauge array that displays a wide variety of data. Readouts include barometric measurements, dual trip meters and a clock. In addition to the functions, the gauge has been styled to match the aggressive lines of the bodywork and console area. - Standard electric start
Yamaha’s electric starter system allows consumers to fire up their Apex RTX with the turn of a key. There is no pulling on a nylon cord to get this high-tech engine growling! Electric start is a standard feature on all of Yamaha’s 4-stroke machines.
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