The new Sidewinder S-TX GT produces the most power ever offered in a Yamaha 2-up machine. It absolutely blurs the line between a sporty trail touring package and all out lake-racer. Powered by the mighty Yamaha Genesis 998 turbo, this fully featured flag-ship cruiser stands above all other passenger capable snowmobiles. Extended fuel range, storage capacity for two, plus all the comfort and warmth you'd expect from a luxury sled are a given. Rocket past your buddy's racy big twin with turbo-charged authority.

• 146 Dual Load Rear Suspension
• The Dual Shock SR 146 offers a long profile version of our acclaimed trail comfort suspension. This lightweight suspension offers premium bump compliance with excellent resistance to bottoming. The Dual Shock SR 146 is a "coupled" skid-frame that utilizes a unique "sliding" front arm mount with half an inch of movement at the front arm "slot". This active arm design delivers controlled (reduced) ski-lift during acceleration while retaining a good measure of independent front arm tracking. The addition of passenger 'overload' springs help compensate for the extra weight of a passenger to reduce bottoming and maintain balance.
• Deluxe 2-Piece Heated King Queen Seat
• A plush 2-up heated seat provides the ultimate in warmth and comfort on even the coldest of winter days. A simple flip of the dash-mounted switch allows you to choose from two settings of warmth and your passenger has their own controls. The passenger also gets a fully adjustable backrest.
• Tether Switch
• An integrated switch automatically shuts-down the engine when ever the driver is not on-board.
• Rear Hard Case with Auxiliary Fuel Tank
• You wont be caught short on a long ride with the convenient, moisture proof, hard storage case and 4 gallon auxiliary fuel tank. Total fuel capacity is bumped up to 11 gallons or 42 liters, which goes a long ways on the trail (and your peace of mind).
• 998 Genesis Turbo Engine
• The turbo boosted, one liter triple is unmatched when it comes to delivering incredible power with the refinement and quality you have come to expect from a Yamaha. Designed around a premium turbo unit, every engine component from intake to exhaust, is dedicated to producing uncompromised performance. The Yamaha turbo has earned the respect and reputation befitting the industry's highest achiever. Truly this is the potent venom of a Sidewinders bite.

• 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.
• 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.
• Lightweight, Rigid SRV Chassis
• The SRV chassis combines a load-bearing triangulated structure with lightweight aluminum construction to create a neutrally balanced sled that's centered on the rider. The pyramidal upper frame creates chassis strength without excessive weight.

• EBRS Engine Braking Control
  The effect of 4-stroke 'engine braking' when the throttle valves are closed has a significant impact on handling and ride character. Yamaha developed a special system which employs the ISC (idle speed control) circuit and ECU map using throttle valve movement and RPM information to reduce negative intake pressure during deceleration.
• 146 x 1.25 in RipSaw ^TM Track
  The second generation RipSaw ^TM track is known for its excellent cornering grip and all around handling prowess on groomed trails. The aggressive 1.25" lugs will bite into hard-pack keeping side slip at bay and still generate plenty of forward propulsion when things get soft.
• HPG Shock Package
  The Sidewinder S-TX GT receives a full compliment of proven, aluminum body HPG ( High Pressure Gas) shocks with beefy 1.5" shafts front and rear offering fade free performance to handle all the challenges the trail can dish out.
• YSRC High Performance Clutch System
  The YSRC primary and roller secondary clutches are calibrated for durable, cool operation. They harness and transfer the massive torque produced by the Genesis Turbo efficiently to the track while minimizing drive belt wear. The primary shifts out aggressively to use all the power on tap while the roller secondary is quick to back-shift and provides additional ratio through its oversize sheaves. The result is continuous acceleration after others have signed off.