Sidewinder X-TX SE 137
Yamaha - Snowmobiles - Sidewinder X-TX SE 137

Sidewinder X-TX SE 137

2018 Snowmobiles

Yet another exciting partner for track and trail

Get out and explore with the aggressive-looking – and performing – Sidewinder X-TX SE 137. This turbo-powered, trail-blazing adventure machine will tempt you to go further – and faster!

A coupled suspension version of the Sidewinder X-TX, the SE 137 features our awesome, turbo-powered, fuel-injected 998cc Genesis® 180 engine, delivering pulse-raising power and torque at any altitude. With its 1.75″/44mm Camoplast® Back Country track, adjustable suspension and high-performance FOX® shocks, it also offers unbeatable comfort and control.

You’ll enjoy many other features too, like J-hook bars, sport windshield, electric start, reverse gear and hand/thumb warmers.


•  Genesis® 180 4-stroke 998cc 3-cylinder engine
•  Yamaha’s unique and impressive turbo system
•  Extreme colour scheme and striking SE graphics
•  Massive low end torque for control in deep snow
•  Extrovert drive sprockets for secure grip on track
•  Yamaha Tuner Gen 3 skis – for great precision
•  Sharp front suspension – FOX 1.5 ZERO QS3 shocks
•  Rear – FOX® Alu HP Gas and 2.0 ZERO QS3 shocks
•  J-hook handlebar and riser for confident control
•  Dual-switch grip control for hand & thumb warmers
•  Convenient electric start and push-button reverse
•  Dual digital gauges and sleek, low windshield


Yamaha - Snowmobiles - Sidewinder X-TX SE 137

998cc Genesis Turbo 4-stroke engine

The most advanced and powerful engine ever to hit the snowmobile industry, this smooth, flexible 3-cylinder unit breathes easily at any altitude - in any conditions. Massive torque and pulling power are assured across the rev band, with instant throttle response and no 'turbo lag'. A genuine power revolution in the 'real' 180HP class.

Yamaha - Snowmobiles - Sidewinder X-TX SE 137

Asymetric double wishbone front suspension

A special characteristic of this exciting machine is its unique front suspension geometry, with widely spaced lower and upper A-arms mounted asymetrically to the chassis bulkhead. FOX 1.5 ZERO QS3 shocks deliver ultra-reponsive handling - yet are strong enough to take plenty of punishment on trails and tracks in the back country.

Yamaha - Snowmobiles - Sidewinder X-TX SE 137

Dual Shock SR 137 rear suspension

The Sidewinder X-TX SE offers an impressive range of easily adjustable tuning options, thanks to its FOX® shock and torsion spring set-up. Soften it up for fresh powder riding - or stiffen it for fast trail blazing. Setting it anywhere in between is fine too - just experiment a little then match it to your own personal riding style.

Yamaha - Snowmobiles - Sidewinder X-TX SE 137

High-performance Camoplast® Back Country track

A powerful performer in all conditions, the Camoplast® Back Country track, specially chosen for this Sidewinder, features 1.75"/44mm lugs. Driven by extrovert drive sprockets meshing precisely with holes in the track, it acts like a gear mechanism, to deliver outstanding levels of grip and propulsion in all snow conditions.

Yamaha - Snowmobiles - Sidewinder X-TX SE 137

J-hook handlebar and tall riser

A tall, lightweight aluminum riser sets the handlebar at the right height for maximum control in fresh powder. This pivot-adjustable riser allows you to choose the optimum angle for your own riding position. The straight J-hooked handlebar also makes control easier and gives precise feedback from the front suspension.

Yamaha - Snowmobiles - Sidewinder X-TX SE 137

Deluxe instrument panel with dual digital displays

Multiple sensors ride on board with you, continously monitoring engine data to provide essential rider information. In addition to speed, rpm, fuel, oil temperature and pressure, a wide range of trip-related data can be selected. Like a clock with hour-meter, 'Distance Travelled' information - and even an altimeter!

Yamaha - Snowmobiles - Sidewinder X-TX SE 137

Yamaha YSRC clutch system

Our YSRC clutch is designed to cope with the massive torque and high power output of the Yamaha 998cc Genesis® Turbo triple. Shifting is extremely efficient with a fast backshift response to match. The high strength castings, efficient cooling and finely tuned settings combine to ensure excellent V-belt durability and low maintenance.

Yamaha - Snowmobiles - Sidewinder X-TX SE 137

Luxury and comfort all the way

The SE versions of our Sidewinder make off-trail riding a real pleasure, with luxuries like the mountain seat, comfortable hand/thumb warmers, convenient electric start, reverse gear and a neatly designed super-short windscreen. There are spacious stow-away facilities too, including goggle and belt bags and a tunnel storage bag.

Technical specifications


Type / Displacement
4 Stroke / 998cc
Bore x stroke
80.0 mm x 66.2 mm
Turbo boosted 41 mm Mikuni x 3, Fuel Injection, Liquid Heated
Intake design
Ignition system
Digital T.C.I. w/T.P.S.
2-valves, Rear Exhaust
Clutch / transmission
YSRC, Variable Ratio, Electronic Shift Reverse, Magnesium Chaincase & Cover
Disc brake system
Radial Master Cylinder Hydraulic Brake / Light Weight Disc on Drive Shaft


Front suspension system
Front shocks
Front travel
254 mm
Rear suspension system
Dual Shock SR 137 Torsion
Rear shocks
Alu. HP Gas 1.5 / FOX 2.0 ZERO QS3
Rear Travel
343 mm

Measures / Dimensions

Overall height
1,280 mm
Overall length
3,175 mm
Overall width
1,219 mm
Track W x L x H
15 inch x 137 inch x 1.75 inch, 381 mm x 3,480 mm x 44 mm
Track Type
Camoplast Backcountry 1.75″
Ski stance (ctr. to ctr.)
1,067 – 1,092 mm adjustable
Fuel tank capacity
33.6 L


Electric start
Hand & thumb warmers
Headlight watts, type


Yamaha - Snowmobiles - Sidewinder X-TX SE 137 - Frozen Titanium

Frozen Titanium