Experience exceptional riding with Yamaha snowmobiles available at Desjardins Marine Sainte-Adèle. Their thoughtfully designed ergonomics provide unparalleled comfort, allowing you to fully enjoy your snowy adventures. With advanced suspension technology, you benefit from optimal stability and manoeuvrability, even on the most rugged terrains. Not to mention the renowned Japanese reliability that characterizes Yamaha snowmobiles, giving you peace of mind during your rides. 

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ID # 39148894

2026 Arctic Cat EXT Special 858 ATAC

  • 2026 Arctic Cat EXT Special 858 ATAC
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Overview

         The Past Returns

The reimagined EXT Special delivers responsive handling, solid power and everything you need for a full day of trail domination. Exclusive to Arctic Cat, the EXT Special is the only 2-stroke snowmobile equipped with electronic power steering. Coupled with C&A Pro XPT skis and 6” Woody’s Dooly runners, this sled was made for going into every corner with confidence and coming out the other side without fatigue.

2026 Arctic Cat EXT Special 858 ATAC EXT Special 858 ATAC

This Cat is Proud of its Spots

  • 858 C-TEC2 Engine
  • Electronic Power Steering
  • Ice Ripper XL Track  
  • C&A Pro XPT Skis w/Woody’s Dooly 6” 
Specifications
Model
EXT Special
Category Name
Snowmobiles
Year
2026
Sale Type
New
Manufacturer
Arctic Cat
engine
Exhaust
APV IV w/ Full Stainless Steel Exhaust & EGT Sensors
Ignition
Digitally Controlled CDI
Cylinders
2
Engine Type
858, 2-Stroke
Lubrication
Electronic Injection
Displacement
858cc
Bore X Stroke
85 x 75.6 mm
Fuel Capacity
10.4 gal
Fuel Delivery
Next Gen. C-TEC2
Minimum Octane
91
Oil System Capacity
3.0 qt
Engine Stator Output
270W @ 3000 RPM
Coolant System Capacity
5.4 qt
powertrain
Brakes
Stealth Hydraulic Master Cylinder
Gearing
30/58
Reverse
Push-Button Engine
Chain Pitch
Belt
Drive Clutch
ADAPT
Drive System
AC Trail Belt Drive
Driven Clutch
ADAPT
Clutch Calibration
0-5,000 ft
Track Drive Sprocket
9 Tooth, 2.86 Pitch, Involute
suspension
Sway Bar
Standard
Ski Shocks
FOX 1.5 iQS
Rear Travel
13.5 in
Front Travel
8.2 in
Rear Suspension
SLIDE-ACTION with 3 Wheel Rear Axle Assembly, Coupling Blocks, Torque-Sensing Link Rear Arm & Adjustable Torsion Springs w/ ATAC System
Front Suspension
AWS 42
Rear Track Shock
FOX 2.0 ZERO iQS
Front Track Shock
FOX 1.5 iQS
dimension
Lug
1.25 in
Pitch
2.86 in
Ski Stance
41.5-42.5 in - Adjustable
Track Type
Ice Ripper XT
Runner Type
Woody's Dooly 6"
Track Width
15 in
Track Length
137 in
Ski Type/Width
C&A Pro XPT
Overall Chassis Width
48-49 in
Overall Chassis Height
47 in
Overall Chassis Length
126 in
instrumentation
Oil
Digital
Fuel
Digital
Clock
Digital
Hours
Digital
Coolant
LCD Icon
Odometer
Digital
Altimeter
Digital
Tachometer
Digital
Speedometer
Digital
Type Of Gauge
Arctic Cat G8 (CAN w/o GRR)
Battery Voltage
Digital
features
Color
Quicksilver/Pinnacle Purple
Seating
Trail
Starter
Push-Button Electric Start
Lighting
LED
Handlebars
Hooked
Windshield
11 in Mid Height
Heat Exchanger
Front/Long Tunnel
Standard Accessories
12V Outlet, Electronic Power Steering, Sport Front Bumper, Integrated Goggle Holder, ATACH mounting, Hand & Thumb Warmers, Standard Brake Disc, Ratio Steering, Tether Switch, Tunnel Flares, Visor Plug-In
main features

2026 Arctic Cat EXT Special 858 ATAC PEAK PERFORMANCE UNLOCKED

CATALYST CHASSIS

The revolutionary CATALYST platform has been built from the ground up to optimize every aspect of your ride, so much so that you’ll feel at one with the sled. With enhanced ergonomics, a lower center of gravity, our exclusive laydown engine design, specially calibrated suspension and more, this changes everything.

2026 Arctic Cat EXT Special 858 ATAC BREED OF POWER

858 ENGINE

The all-new 858 two-stroke engine is designed for seamless integration into the new CATALYST platform. With an 8% increase in displacement, this engine houses an 11% increase in output over the C-TEC2 800 and weighs 4% less. It features an optimized air intake system, a new exhaust valve design for more consistent power and cleaner emissions, and an all-new crankcase for increased stroke and integrated engine mounts.

2026 Arctic Cat EXT Special 858 ATAC CONFIDENCE-INSPIRING HANDLING

AWS 42 FRONT SUSPENSION WITH PROGRESSIVE RATIO STEERING

The AWS 42 Front Suspension is engineered specifically to compliment the EXT Special. With ratio steering to reduce rider effort, you'll experience more control.

2026 Arctic Cat EXT Special 858 ATAC NO ROUGH RIDES

SLIDE-ACTION™ REAR SUSPENSION

Rough rides are a thing of the past. With this industry-exclusive design that keeps the front arm engaged while the rear arm compresses, you'll hardly feel a bump in the trail.

2026 Arctic Cat EXT Special 858 ATAC NAVIGATION AT YOUR FINGERTIPS

ARCTIC CAT G8 DIGITAL DISPLAY

The all new Arctic Cat G8 digital display, powered by Garmin, offers seamless integration with your sled. A built in GPS with preloaded trail maps, customizable data fields and phone connectivity are just some of the features that make G8 essential for every ride. Plus, the group ride functionality utilizes satellite or celluar data, dependent on region, to share the ride with up to 15 people.

2026 Arctic Cat EXT Special 858 ATAC INCREASED DURABILITY

ARCTIC CAT TRAIL BELT DRIVE

The CATALYST platform utilizes Arctic Cat's belt drive system rather than a chain drive. This allows for enhanced durability and fewer parts in the system. The adjustable center distance allows for multiple ratio options and makes servicing simple.

2026 Arctic Cat EXT Special 858 ATAC QUICKLY CONNECT

ATACH LATCHING SYSTEM

Adding accessories to your sled is a snap with this 4-point latching system. You can install and remove accessories in seconds, so no matter where you are, you can customize your sled with ease.

2026 Arctic Cat EXT Special 858 ATAC Intuitive Handling

Power Steering

As an Arctic Cat exclusive, Electronic Power Steering (EPS) on a 2-stroke snowmobile is a next-level experience. Unmatched control, easier turns, and intuitive handling will upgrade your ride more than you could imagine.

2026 Arctic Cat EXT Special 858 ATAC SMOOTH POWER DELIVERY

ADAPT CVT SYSTEM

With its lightweight, narrow design that increases performance and belt life, as well as the industry’s only self-adjusting clutch, the ADAPT™ CVT system provides better throttle response, smoother power delivery and a ride like no other.

2026 Arctic Cat EXT Special 858 ATAC VERSATILE SUSPENSION

ATAC® ADJUSTABLE ON-THE-FLY SUSPENSION

The ATAC Adjustable On-the-Fly Suspension immediately adjusts the FOX® ZERO iQS shocks with the push of a button to navigate changing snow conditions. Choose between two rider profiles, three firmness settings and engage lockout mode to ride your way.