- 2012 Yamaha APEX XTX
2012 Yamaha APEX XTX
- Top Performance 4-cylinder Genesis 4-Stroke engine
The physical casting of the engine remains the same, but the valve timing, intake and exhaust tracts, airbox and exhaust pipes are all recalibrated for optimum midrange torque output as well as an overall top end gain.
The intake tracts on the Apex XTX have been lengthened by 11mm, as compared to the previous model. The engine utilizes the pressure waves in the longer intake tubes and in the airbox to boost airflow and maximize high RPM performance.
The distance between the throttle valve and intake valve has been designed for optimum fuel delivery. In addition, the 4-hole injector on the throttle body creates a spray of finely atomized fuel, with droplets of just tenths of a micron in size. The spray is aimed directly at the intake valve skirt for maximum efficiency and performance. The result? Simply unmatched throttle response.
- EXUP and new exhaust pipe
Yamaha-exclusive EXUP valve technology controls the exhaust pressure waves for optimum intake and exhaust efficiency, delivering unmatched overall performance with more midrange torque. Additionally, the exhaust pipes have been enlarged to 38mm from 35mm for added exhaust pressure wave efficiency.
- 15 x 144 x 1.25-inch Rip Saw™ track
The Camoplast Rip Saw track is a standard feature on the Apex XTX. It has been widely acclaimed in the industry as the best all-around OEM track for acceleration, cornering bite and everyday trail usage.
- Engine Braking Reduction System
The Top Performance Genesis 4-Stroke engine features the unique Engine Braking Reduction System. The system allows a small amount of air to pass through the fuel injection system when the throttle is released, giving riders more of a “coast” feeling.
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