2018 Yamaha Sidewinder S-TX DX 146
2018 Yamaha Sidewinder S-TX DX 146

Specs

General Information

Manufacturer
Yamaha
Yamaha
Model Year
2018
2018
Model
Sidewinder S-TX DX 146
Sidewinder S-TX DX 146
Model Code
SIDEWINDERSTXDX146
SIDEWINDERSTXDX146
Color
Black
Black

Dimensions

Length
127 in. (3,226mm)
127 in. (3,226mm)
Width
48 in. (1,219mm)
48 in. (1,219mm)

Engine & Drivetrain

Shocks
Front / Rear - Monotube Alum-HP GAS-1.5
Front / 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 shock SR 146

Travel - 14.5 in. (368 mm)

Dual shock SR 146

Travel - 14.5 in. (368 mm)

Engine
Turbocharged, Liquid Cooled 4 Stroke, 3 cylinder
Turbocharged, Liquid Cooled 4 Stroke, 3 cylinder
Displacement
998 cc
998 cc
Bore x Stroke
80 x 66.2 mm
80 x 66.2 mm
Fuel Capacity
10.7 gal. (40.5 l)
10.7 gal. (40.5 l)
Clutch
YSRC
YSRC
Brakes
Hydraulic disc
Hydraulic disc
Fuel System
Electronic Fuel Injection
Electronic Fuel Injection

Operational

Skis
Tuner III
Tuner III
Ski Stance
Adjustable - 42 in. (1067 mm)
Adjustable - 42 in. (1067 mm)
Track LxWxH
146 x 15 x 1.25 in. (381 x 3708 x 31.8 mm) Camoplast® Ripsaw™ II
146 x 15 x 1.25 in. (381 x 3708 x 31.8 mm) Camoplast® Ripsaw™ II

Other

Additional Colors
Black
Black
Safety Features
Headlights - LED
Headlights - LED

Features

Comfort

  • HPG REAR SHOCKS: Premium high pressure gas shocks are found at both the front and rear arms of the rear suspension - tuned for premium control and comfort with incredible fade resistance. The shocks are also serviceable, allowing your authorized Yamaha dealer to recharge and refresh them for consistent performance season after season.
  • DIGITAL GAUGE PACKAGE: The deluxe gauge package touts large, easy to read black on white digits, making it easy to keep track of vehicle and engine diagnostics even when navigating a drifted ditch-line or mogul littered trail. The easy to operate, technology packed display includes coolant temperature, exhaust temperature, intake air temperature, voltage, along with speed, rpm, altimeter, clock, fuel level, trip meters, and much more.
  • MID-HEIGHT WINDSHIELD: The Deluxe's windshield was designed to be as functional as it is stylish. It features a mid-height with precisely engineered curvatures providing maximum protection from wind and swirl-in, with minimum aerodynamic drag.
  • PUSH BUTTON REVERSE: Standard push button reverse actuates a servo-controlled reverse gear providing both comfort and convenience.

Handling

  • LIGHTWEIGHT SRV FRONT SUSPENSION: The over-structure design of the SRV chassis creates a rigid mounting point for the unique 30-degree swept design of the SRV front suspension. The “angled” mounting design directs impacts back to the strongest points of the chassis, creating a more stable and predictable ride. Tall, lightweight forged spindles help to deliver an incredibly strong front suspension with controlled camber geometry for stability and light steering effort.
  • HPG COIL-OVER FRONT SHOCKS: High pressure gas (HPG) shocks with strong 40 mm bodies are calibrated to deliver consistent performance and comfort with excellent fade resistance. Plus the shocks are rebuildable, ensuring you season after season of consistent performance with proper maintenance.
  • SRV CHASSIS: Sophisticated aluminum extrusions are joined with precision castings to create an incredibly strong, lightweight and rider intuitive chassis. The over-structure design provides rigidity and is designed to disperse severe impacts throughout the chassis making it exceptionally resilient.
  • CONJOINED REAR WHEEL-SET: A composite rear axle hub assembly is conjoined into a single hub design, making it both lighter and stronger than two separate wheels, resulting in less un-sprung weight for a more responsive rear suspension.

Performance

  • MITSUBISHI ECU: The Yamaha-developed Mitsubishi ECU uses a series of nine sensors to gather running condition data and computes using its predetermined memory ‘map’. It then adjusts ignition timing, fuel delivery, manifold air-pressure and turbo boost pressure to produce maximum performance - reliably.
  • TRIPLE THROTTLE BODIES: Yamaha engineers wanted to develop a turbo so smooth and so quick to respond that it doesn’t feel like a conventional turbo. One of the ways they achieved their goal was to develop the intake system using three separate throttle bodies instead of just one - something that is not seen in any other production turbo on the planet. And another first for Yamaha with the Genesis turbo.
  • CONNECTING ROD: Special, light weight, hardened carburized steel connecting rod design has the optimum strength required to produce maximum power. This turbo-specific rod design uses nutted studs to join the close-tolerance, machined-faced big end. The rods are also treated with a special Defric coating for cold start protection, to ensure long life and maximum reliability.
  • 1.6-INCH COBRA TRACK: Blending the best of on-trail bite and off-trail flotation and traction, the 1.6-inch lug Cobra track is a key contributor to the Sidewinder S-TX 137 DX versatile make-up.
  • HAYES PERFORMANCE BRAKES: A dual-piston brake caliper applies braking forces directly to the drive shaft and is mated to an oversized, lightweight drilled rotor. The unique radial brake master cylinder helps to deliver consistent “feel” in a wide variety of conditions while the oversized lever delivers greater braking force and feel with reduced effort.
  • HIGH FLOW INTAKE AND EXHAUST: The forward facing design of the air-box and engine intake system on the Genesis 1,049 cc engine results in maximum airflow to the engine and no starvation. This ensures maximum power and throttle response. In addition, a high-flow, stainless steel exhaust header is cooled by snow for optimum performance without excessive heat and noise.
  • 998 CC GENESIS TURBO ENGINE: The Genesis 998 Turbo 3-cylinder engine delivers 800-class dominating performance in a compact package. The high tech engine system carries a full suite of features to ensure you have a great day on the snow and a fun night when you reach your destination. We use our advanced nine-sensor engine management system to control fuel flow for maximum performance, but it also incorporates a knock sensor to adjust ignition timing and even manifold pressure if the need should arise.

Top Features

  • 998 CC GENESIS TURBO ENGINE: The Genesis 998 Turbo 3-cylinder engine delivers 800-class dominating performance in a compact package. The high tech engine system carries a full suite of features to ensure you have a great day on the snow and a fun night when you reach your destination. We use our advanced nine-sensor engine management system to control fuel flow for maximum performance, but it also incorporates a knock sensor to adjust ignition timing and even manifold pressure if the need should arise.
  • 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.
  • YSRC CLUTCHING: Yamaha has well over a decade of experience in harnessing the unique power delivery of a high performance four-stroke engine. For the hyper performance Sidewinder L-TX LE, we have developed a YSRC roller secondary system to deliver aggressive upshifting while also backshifting quickly to keep you in the power. In addition, we slightly upsized the secondary to overshift and let the Sidewinder L-TX LE stretch its legs on a long lake run.
  • MODULAR REAR BUMPER: The integrated eight-pocket design of the wrap-around bumper easily accommodates and wide assortment of accessories and securely holds a host of genuine Yamaha accessories including a two-up seat, rack, or luggage.
  • SEMI-RIGID SADDLEBAGS: Semi-Ridge Saddlebags come standard and offer extensive storage solutions with weatherproof, easy access zippers. The bags feature a semi-rigid design giving them a sleek and integrated looks that blends flawlessly with the snowmobile.
  • HEATED TRAIL SEAT: A standard 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 allowing you to explore what lies beyond that next curve from sun-up to sundown in complete comfort.
  • DUAL SHOCK SR 137 REAR SUSPENSION: The drop-link style dual shock SR 137 rear suspension is the cumulative result of years of punishment and development in snocross and cross-country competition. This “crossover” suspension offers premium bump compliance and control on trail, additional bump bridging capabilities thanks to its stretched length, and additional flotation and traction for occasional off-trail use. The SR 137 is a “coupled” suspension that utilizes a unique “sliding” front arm mount. With up to half-inch of movement at the front arm “slot”, the system allows the SR 137 to deliver controlled (reduced) ski-lift during acceleration while still retaining front arm bump compliance.

Comfort

  • HPG REAR SHOCKS: Premium high pressure gas shocks are found at both the front and rear arms of the rear suspension - tuned for premium control and comfort with incredible fade resistance. The shocks are also serviceable, allowing your authorized Yamaha dealer to recharge and refresh them for consistent performance season after season.
  • DIGITAL GAUGE PACKAGE: The deluxe gauge package touts large, easy to read black on white digits, making it easy to keep track of vehicle and engine diagnostics even when navigating a drifted ditch-line or mogul littered trail. The easy to operate, technology packed display includes coolant temperature, exhaust temperature, intake air temperature, voltage, along with speed, rpm, altimeter, clock, fuel level, trip meters, and much more.
  • MID-HEIGHT WINDSHIELD: The Deluxe's windshield was designed to be as functional as it is stylish. It features a mid-height with precisely engineered curvatures providing maximum protection from wind and swirl-in, with minimum aerodynamic drag.
  • PUSH BUTTON REVERSE: Standard push button reverse actuates a servo-controlled reverse gear providing both comfort and convenience.

Handling

  • LIGHTWEIGHT SRV FRONT SUSPENSION: The over-structure design of the SRV chassis creates a rigid mounting point for the unique 30-degree swept design of the SRV front suspension. The “angled” mounting design directs impacts back to the strongest points of the chassis, creating a more stable and predictable ride. Tall, lightweight forged spindles help to deliver an incredibly strong front suspension with controlled camber geometry for stability and light steering effort.
  • HPG COIL-OVER FRONT SHOCKS: High pressure gas (HPG) shocks with strong 40 mm bodies are calibrated to deliver consistent performance and comfort with excellent fade resistance. Plus the shocks are rebuildable, ensuring you season after season of consistent performance with proper maintenance.
  • SRV CHASSIS: Sophisticated aluminum extrusions are joined with precision castings to create an incredibly strong, lightweight and rider intuitive chassis. The over-structure design provides rigidity and is designed to disperse severe impacts throughout the chassis making it exceptionally resilient.
  • CONJOINED REAR WHEEL-SET: A composite rear axle hub assembly is conjoined into a single hub design, making it both lighter and stronger than two separate wheels, resulting in less un-sprung weight for a more responsive rear suspension.

Performance

  • MITSUBISHI ECU: The Yamaha-developed Mitsubishi ECU uses a series of nine sensors to gather running condition data and computes using its predetermined memory ‘map’. It then adjusts ignition timing, fuel delivery, manifold air-pressure and turbo boost pressure to produce maximum performance - reliably.
  • TRIPLE THROTTLE BODIES: Yamaha engineers wanted to develop a turbo so smooth and so quick to respond that it doesn’t feel like a conventional turbo. One of the ways they achieved their goal was to develop the intake system using three separate throttle bodies instead of just one - something that is not seen in any other production turbo on the planet. And another first for Yamaha with the Genesis turbo.
  • CONNECTING ROD: Special, light weight, hardened carburized steel connecting rod design has the optimum strength required to produce maximum power. This turbo-specific rod design uses nutted studs to join the close-tolerance, machined-faced big end. The rods are also treated with a special Defric coating for cold start protection, to ensure long life and maximum reliability.
  • 1.6-INCH COBRA TRACK: Blending the best of on-trail bite and off-trail flotation and traction, the 1.6-inch lug Cobra track is a key contributor to the Sidewinder S-TX 137 DX versatile make-up.
  • HAYES PERFORMANCE BRAKES: A dual-piston brake caliper applies braking forces directly to the drive shaft and is mated to an oversized, lightweight drilled rotor. The unique radial brake master cylinder helps to deliver consistent “feel” in a wide variety of conditions while the oversized lever delivers greater braking force and feel with reduced effort.
  • HIGH FLOW INTAKE AND EXHAUST: The forward facing design of the air-box and engine intake system on the Genesis 1,049 cc engine results in maximum airflow to the engine and no starvation. This ensures maximum power and throttle response. In addition, a high-flow, stainless steel exhaust header is cooled by snow for optimum performance without excessive heat and noise.
  • 998 CC GENESIS TURBO ENGINE: The Genesis 998 Turbo 3-cylinder engine delivers 800-class dominating performance in a compact package. The high tech engine system carries a full suite of features to ensure you have a great day on the snow and a fun night when you reach your destination. We use our advanced nine-sensor engine management system to control fuel flow for maximum performance, but it also incorporates a knock sensor to adjust ignition timing and even manifold pressure if the need should arise.

Top Features

  • 998 CC GENESIS TURBO ENGINE: The Genesis 998 Turbo 3-cylinder engine delivers 800-class dominating performance in a compact package. The high tech engine system carries a full suite of features to ensure you have a great day on the snow and a fun night when you reach your destination. We use our advanced nine-sensor engine management system to control fuel flow for maximum performance, but it also incorporates a knock sensor to adjust ignition timing and even manifold pressure if the need should arise.
  • 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.
  • YSRC CLUTCHING: Yamaha has well over a decade of experience in harnessing the unique power delivery of a high performance four-stroke engine. For the hyper performance Sidewinder L-TX LE, we have developed a YSRC roller secondary system to deliver aggressive upshifting while also backshifting quickly to keep you in the power. In addition, we slightly upsized the secondary to overshift and let the Sidewinder L-TX LE stretch its legs on a long lake run.
  • MODULAR REAR BUMPER: The integrated eight-pocket design of the wrap-around bumper easily accommodates and wide assortment of accessories and securely holds a host of genuine Yamaha accessories including a two-up seat, rack, or luggage.
  • SEMI-RIGID SADDLEBAGS: Semi-Ridge Saddlebags come standard and offer extensive storage solutions with weatherproof, easy access zippers. The bags feature a semi-rigid design giving them a sleek and integrated looks that blends flawlessly with the snowmobile.
  • HEATED TRAIL SEAT: A standard 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 allowing you to explore what lies beyond that next curve from sun-up to sundown in complete comfort.
  • DUAL SHOCK SR 137 REAR SUSPENSION: The drop-link style dual shock SR 137 rear suspension is the cumulative result of years of punishment and development in snocross and cross-country competition. This “crossover” suspension offers premium bump compliance and control on trail, additional bump bridging capabilities thanks to its stretched length, and additional flotation and traction for occasional off-trail use. The SR 137 is a “coupled” suspension that utilizes a unique “sliding” front arm mount. With up to half-inch of movement at the front arm “slot”, the system allows the SR 137 to deliver controlled (reduced) ski-lift during acceleration while still retaining front arm bump compliance.