2018 Yamaha Sidewinder R-TX SE CONQUER SNOW Tried-and-trail-true, the 129" track length found on the Sidewinder R-TX SE offers the type of precision and ride experience that the hardcore snowmobiler craves. The Ripsaw II track allows for greater acceleration and is complemented by Tuner III skis that provide unmatched cornering. Throw in a Genesis 998 Turbo engine and the Sidewinder R-TX SE is something you will find yourself coming back to time and time again. 998 YAMAHA GENESIS TURBO ENGINE Industry's highest horsepower Designed around a premium turbo unit to produce uncompromised performance and reliability Yamaha engineered for no turbo lag DUAL SHOCK SR 129 REAR SUSPENSION Utilizes "free-acting" front arm that effectively couples to the rear arm under torque load while letting front arm float Keeps skis firmly planted Offers best of both uncoupled small bump compliance with optimum coupled weight transfer SE SHOCK PACKAGE Premium FOX® Zero RC front shock Pre-load adjustable coil springs Skid frame front arm features aluminum 1.5 HPG gas shock with a beefier aluminum 2.0 HPG to handle rear duties Features may include: PERFORMANCE High Tech Turbo The Nickel alloy turbine body is extremely strong and precise, able to withstand highly elevated temperatures. Supported by premium, ceramic ball bearings, the Inconel turbine blade assembly is very light and strong. This yields a low moment of inertia for lightning quick response to exhaust gas input. Triple throttle bodies are used exclusively to further enhance the quick delivery of compressed air from the impeller to intake valves. Mitsubishi Electronic Control Unit The Yamaha-developed Mitsubishi ECU uses a series of 9 sensors to gather running condition data which it computes using a predetermined memory 'map'. It then adjusts ignition timing, fuel delivery, manifold air-pressure and turbo boost pressure to produce maximum performance under any condition - reliably. Triple Throttle Body Induction Yamaha wanted an engine that's exceptionally quick to respond with little or no 'lag' as found in a conventional turbo. One of the ways they achieved their goal was to develop an intake system using three separate throttle bodies positioned very close to the intake valves. Instead of just one feeding long intake tubes - something that is not seen in any other production turbo on the planet. And another first for Yamaha with the Genesis turbo. HANDLING Centralized Mass Design The SRV chassis layout was engineered with the goal of centralizing mass. Approximately 60 percent of the sled's weight is tightly centered within the main triangulation. The result is a quick-handling, well balanced sled, that's fun to throw around in a wide variety of conditions.