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2021 Yamaha Sidewinder S-TX GT
2021 Yamaha Sidewinder S-TX GT

Specs

General Information

Manufacturer
Yamaha
Yamaha
Model Year
2021
2021
Model
Sidewinder S-TX GT
Sidewinder S-TX GT
Model Code
SW1NSGMB
SW1NSGMB
Color
Black / Regal Gold
Black / Regal Gold

Engine & Drivetrain

Engine

Turbo 4-Stroke

Class - Ultra Performance

Turbo 4-Stroke

Class - Ultra Performance

Displacement
998 cc
998 cc
Fuel System
Electronic Fuel Injection
Electronic Fuel Injection
Starting
Electric
Electric
Clutch
YSRC
YSRC
Reverse
Standard
Standard
Fuel Capacity

8.9 gal. (33.6 l)

4 gal. reserve fuel tank (14.1 I)

8.9 gal. (33.6 l)

4 gal. reserve fuel tank (14.1 I)

Operational

Seating or Rider capacity
Heated Seat
Heated Seat
Skis
Yamaha Stryke Single Keel
Yamaha Stryke Single Keel
Ski Stance
Center to center - 42 in. (1,067 mm) adjustable
Center to center - 42 in. (1,067 mm) adjustable
Track Type
Camso Ripsaw I
Camso Ripsaw I
Track LxWxH
146 x 15 x 1.25 in.
146 x 15 x 1.25 in.

Other

Includes
Automotive & RCA DC Output
Automotive & RCA DC Output
Safety Features
LED headlight
LED headlight

Suspension

Shocks

Front - Fox 1.5 Zero QS3

Center / Rear - Monotube Alum-HP Gas 1.5

Front - Fox 1.5 Zero QS3

Center / Rear - Monotube Alum-HP Gas 1.5

Front Suspension

Independent Double Wishbone

Travel - 10 in. (254 mm)

Independent Double Wishbone

Travel - 10 in. (254 mm)

Rear Suspension

Dual Load 146

Travel - 14.5 in. (368 mm)

Dual Load 146

Travel - 14.5 in. (368 mm)

Features

Comfort

  • MULTIPLE ACCESSORY POWER PLUGS: Both driver and passenger are provided with convenient RCA DC outlets for heated helmet visors plus a console-located socket type outlet to power-up other 12V accessories.
  • FRONT/REAR ADJUSTABLE HAND WARMERS: The driver and passenger stay warm with independently-controlled hand warmers. Functional wind deflectors are also added to the padded rear grab bars to keep the elements away from the passenger's hands.
  • PROTECTIVE WINDSHIELD: The medium-smoked polycarbonate windshield shields the high-mileage rider from the coldest days. Incorporating a small lip at the top, the windshield deflects wind and snow up and over the rider at speed while the flared edges provide added protection and warmth for your hands. Thicker than standard windshields, this windshield reduces mirror vibration at speed and features pre-marked indents for easy installation of the optional mirrors.
  • STEALTH CONTROL SYSTEM: The handlebar controls feature a left-sided switch cluster for “on-the-fly” access to the multi-step hand and thumb warm adjusters, the push button reverse gear shift and the multi-function gauge that can be easily select information with a convenient toggle. On the right side, a clean bar hosts an ergonomically-shaped throttle lever and a simple, stand-alone emergency stop switch. The Hayes 'Stealth' brake cylinder is equipped with a composite brake lever that, coupled with a lightweight caliper, offers better feel and powerful stopping performance.

Handling

  • 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, so Yamaha developed a special system which employs the ISC (idle speed control) circuit and ECU map that uses throttle valve movement and RPM information to reduce negative intake pressure during deceleration.
  • 146" X 1.25" RIPSAW™ TRACK: Regarded as the best high-performance terrain track available, the 146" x 1.25" lug design of the RipSaw delivers incredible acceleration, braking control and handling in a wide variety of trail conditions.
  • HPG SHOCK PACKAGE: The Sidewinder S-TX GT sports front Fox QS3 adjustable shocks up front and aluminum body HPG ( High Pressure Gas) shocks in the rear for fade free performance to handle any challenge the trail dishes out.
  • YSRC HIGH PERFORMANCE CLUTCH SYSTEM: The YSRC primary and roller secondary clutches are calibrated for durable, cool operation. They efficiently harness and transfer the massive torque produced by the Genesis Turbo to the track, all while minimizing drive belt wear. The primary shifts out aggressively to use all of the power while the roller secondary is quick to back-shift and provides additional ratio through its oversized sheaves for continuous acceleration.

Performance

  • TRIPLE THROTTLE BODY INDUCTION: The Yamaha Genesis turbo engine's intake system uses three separate throttle bodies that are positioned very close to the intake valves to create a quick engine response with little to no lag. This is something not see in any other production turbo on the planet.
  • HIGH TECH TURBO: Able to withstand highly elevated temperatures, the Nickel alloy turbine body is extremely strong and precise. Supported by premium ceramic ball bearings, the Inconel turbine blade assembly is very light and strong which yields a low moment of inertia for a lightning quick response to the exhaust gas input. Triple throttle bodies are used exclusively to further enhance the quick delivery of compressed air from the impeller to the intake valves.
  • MITSUBISHI ELECTRONIC CONTROL UNIT: The Yamaha-developed Mitsubishi ECU uses a series of 9 sensors to gather running condition data to compute a predetermined memory map which will adjusts ignition timing, fuel delivery, manifold air-pressure and turbo boost pressure to produce maximum performance under any condition.
  • 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 builds chassis strength without excessive weight.

Top Features

  • 146 DUAL 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 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 days. A simple flip of the dash-mounted switch allows you and your passenger to each choose from two settings of warmth. The passenger seat also has a fully adjustable backrest.
  • SRV FRONT SUSPENSION: The SRV front suspension geometry manages spindle camber which minimizes bump-steer and maximizes cornering bite, giving rider confidence in any trail condition. The A-arms are mounted at a 30-degree angle from the sled's centerline to efficiently dissipate the impact force throughout the entire chassis. The front shocks mount directly to the leading spar so that trail forces are routed to the strongest part of the chassis. Wide a-arm spacing minimizes flex and stress in the front suspension system, meaning consistent and confident corner handling.
  • REAR HARD CASE WITH AUXILIARY FUEL TANK: The moisture-proof, hard storage case with the auxiliary fuel tank holds 4 gallons, bumping the total fuel capacity to 13 gallons.
  • 998 GENESIS TURBO ENGINE: The 998 Genesis Turbo Engine is unmatched when it comes to delivering incredible power. Every engine component from intake to exhaust is dedicated to producing uncompromised performance, earning the respect and reputation as the industry's highest achiever.

Comfort

  • MULTIPLE ACCESSORY POWER PLUGS: Both driver and passenger are provided with convenient RCA DC outlets for heated helmet visors plus a console-located socket type outlet to power-up other 12V accessories.
  • FRONT/REAR ADJUSTABLE HAND WARMERS: The driver and passenger stay warm with independently-controlled hand warmers. Functional wind deflectors are also added to the padded rear grab bars to keep the elements away from the passenger's hands.
  • PROTECTIVE WINDSHIELD: The medium-smoked polycarbonate windshield shields the high-mileage rider from the coldest days. Incorporating a small lip at the top, the windshield deflects wind and snow up and over the rider at speed while the flared edges provide added protection and warmth for your hands. Thicker than standard windshields, this windshield reduces mirror vibration at speed and features pre-marked indents for easy installation of the optional mirrors.
  • STEALTH CONTROL SYSTEM: The handlebar controls feature a left-sided switch cluster for “on-the-fly” access to the multi-step hand and thumb warm adjusters, the push button reverse gear shift and the multi-function gauge that can be easily select information with a convenient toggle. On the right side, a clean bar hosts an ergonomically-shaped throttle lever and a simple, stand-alone emergency stop switch. The Hayes 'Stealth' brake cylinder is equipped with a composite brake lever that, coupled with a lightweight caliper, offers better feel and powerful stopping performance.

Handling

  • 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, so Yamaha developed a special system which employs the ISC (idle speed control) circuit and ECU map that uses throttle valve movement and RPM information to reduce negative intake pressure during deceleration.
  • 146" X 1.25" RIPSAW™ TRACK: Regarded as the best high-performance terrain track available, the 146" x 1.25" lug design of the RipSaw delivers incredible acceleration, braking control and handling in a wide variety of trail conditions.
  • HPG SHOCK PACKAGE: The Sidewinder S-TX GT sports front Fox QS3 adjustable shocks up front and aluminum body HPG ( High Pressure Gas) shocks in the rear for fade free performance to handle any challenge the trail dishes out.
  • YSRC HIGH PERFORMANCE CLUTCH SYSTEM: The YSRC primary and roller secondary clutches are calibrated for durable, cool operation. They efficiently harness and transfer the massive torque produced by the Genesis Turbo to the track, all while minimizing drive belt wear. The primary shifts out aggressively to use all of the power while the roller secondary is quick to back-shift and provides additional ratio through its oversized sheaves for continuous acceleration.

Performance

  • TRIPLE THROTTLE BODY INDUCTION: The Yamaha Genesis turbo engine's intake system uses three separate throttle bodies that are positioned very close to the intake valves to create a quick engine response with little to no lag. This is something not see in any other production turbo on the planet.
  • HIGH TECH TURBO: Able to withstand highly elevated temperatures, the Nickel alloy turbine body is extremely strong and precise. Supported by premium ceramic ball bearings, the Inconel turbine blade assembly is very light and strong which yields a low moment of inertia for a lightning quick response to the exhaust gas input. Triple throttle bodies are used exclusively to further enhance the quick delivery of compressed air from the impeller to the intake valves.
  • MITSUBISHI ELECTRONIC CONTROL UNIT: The Yamaha-developed Mitsubishi ECU uses a series of 9 sensors to gather running condition data to compute a predetermined memory map which will adjusts ignition timing, fuel delivery, manifold air-pressure and turbo boost pressure to produce maximum performance under any condition.
  • 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 builds chassis strength without excessive weight.

Top Features

  • 146 DUAL 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 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 days. A simple flip of the dash-mounted switch allows you and your passenger to each choose from two settings of warmth. The passenger seat also has a fully adjustable backrest.
  • SRV FRONT SUSPENSION: The SRV front suspension geometry manages spindle camber which minimizes bump-steer and maximizes cornering bite, giving rider confidence in any trail condition. The A-arms are mounted at a 30-degree angle from the sled's centerline to efficiently dissipate the impact force throughout the entire chassis. The front shocks mount directly to the leading spar so that trail forces are routed to the strongest part of the chassis. Wide a-arm spacing minimizes flex and stress in the front suspension system, meaning consistent and confident corner handling.
  • REAR HARD CASE WITH AUXILIARY FUEL TANK: The moisture-proof, hard storage case with the auxiliary fuel tank holds 4 gallons, bumping the total fuel capacity to 13 gallons.
  • 998 GENESIS TURBO ENGINE: The 998 Genesis Turbo Engine is unmatched when it comes to delivering incredible power. Every engine component from intake to exhaust is dedicated to producing uncompromised performance, earning the respect and reputation as the industry's highest achiever.