RIOT 858 WITH ATAC

$23,159

STARTING CAD*
Plus destination charge and set-up.**

**Does not include destination charge or dealer set-up fee. Taxes, levies, duties, and other government-imposed fees not included. Prices and charges are subject to change. Price shown is for base model. Accessories, kits, and configurations are extra. Additional fees and charges may apply. Dealer prices may vary. Actual selling prices and terms are set by dealers. See dealer for details.


MAXIMUM ADAPTABILITY

NEW FOR 2025

  • All New 858 C-TEC2™ Engine
  • FOX® iQS Shocks with ATAC
  • Cobra™ or Hurricane™ Track
  • Arctic Cat G8 Digital Display

Description

RIOT 858 WITH ATAC

Built to Handle It All

Why choose between the thrills of on-trail riding and the adventure of venturing into the deep snow when you can have both? Riot blends trail and backcountry performance seamlessly for the ultimate adaptable ride.

 

2 AVAILABLE SLEDS
146″/1.35″
146″/1.75″
Cobra
Hurricane
Push Button Electric AWS Sunset Orange
Woody’s Orange
Track/Lug Track Type Starter Suspension Color

 

 

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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 like you’re one with your sled. With enhanced ergonomics, a lower center of gravity, our exclusive laydown engine design, specially calibrated suspension and more, this changes everything.

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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.

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SMOOTH POWER DELIVERY

ADAPT™ CVT

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.

WATCH VIDEO

 

CONFIDENCE-INSPIRING HANDLING

AWS 39 FRONT SUSPENSION WITH PROGRESSIVE RATIO STEERING

The AWS 39 Front Suspension is engineered specifically to compliment the Riot 858. With ratio steering to reduce rider effort, you’ll experience more control.

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PLAYFUL COMFORT

CROSS-ACTION Rear Suspension

The uncoupled CROSS-ACTION rear suspension provides unparalleled agility from powder to hardpack. The design enables the front and rear halves of the suspension to move independently, so riders enjoy excellent cornering and bump absorption on the trail, as well as off-trail weight transfer.

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A NEW BREED OF POWER

ALL NEW 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.

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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.

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INCREASED DURABILITY

ARCTIC CAT TRAIL BELT DRIVE

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

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.

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BRIGHTEN ANY RIDE

ASYMMETRICAL LED HEADLIGHT

A premium LED headlight is crucial to optimize your visibility. Equipped with both high and low beams, this headlight casts an LED light pattern with great range and width. Plus, with it’s unique asymmetrical design, everyone will know that you’re on an Arctic Cat.

 

VEHICLE SPECS
ENGINE
RIOT 858 WITH ATAC
Engine Type 858, 2-Stroke
Displacement (cc) 858cc
Cooling Liquid
Cylinders 2
Bore x Stroke (mm) 85 x 75.6 mm
Lubrication Electronic Injection
Ignition Digitally Controlled CDI
Engine Starter Output 270 W @ 3000 RPM
Fuel Delivery Next Gen. C-TEC2
Exhaust APV IV w/ Full Stainless Steel Exhaust & EGT Sensors
Fuel Capacity 10.4 gal
Oil System Capacity 3.0 qt.
Coolant System Capacity 5.4 qt.
Minimum Octane 91
POWERTRAIN
RIOT 858 WITH ATAC
Drive Clutch ADAPT
Driven Clutch ADAPT
Drive System AC Trail Belt Drive
Brakes Stealth Hydraulic Master Cylinder
Clutch Calibration 0-5,000 ft.
Gearing 27/60
Chain Pitch Belt
Track Drive Sprocket 9 Tooth, 2.86 Pitch, Exvolute
Reverse Push-Button Engine
SUSPENSION
RIOT 858 WITH ATAC
Front Suspension Arctic Wishbone Suspension 39
Ski Shocks FOX 1.5 iQS
Sway Bar Standard
Front Travel 7.5 in.
Rear Suspension CROSS-ACTION w/ 3 Wheel Rear Axle Assembly, Torque-Sensing Link Rear Arm & Adjustable Torsion Springs w/ ATAC System
Front Track Shock Arctic Cat IFP 1.5
Rear Track Shock FOX 2.0 ZERO iQS
Rear Travel 13.5 in.
DIMENSIONS
RIOT 858 WITH ATAC
Overall Chassis Length 130.5 in.
Overall Chassis Width 48-49 in.
Overall Chassis Height 49 in.
Track Type Cobra or Hurricane
Track Width 15 in.
Track Length 146 in.
Lug 1.35 in or 1.75 in
Pitch 2.86 in.
Ski Stance 38-40 in. Adjustable
Ski Type/Width G2 ProClimb- 7 in.
Runner Type Single Runner w/ Carbide
INSTRUMENTATION
RIOT 858 WITH ATAC
Type of Gauge Arctic Cat G8 (CAN w/o GRR)
Speedometer Digital
Tachometer Digital
Odometer Digital
Fuel Digital
Oil LCD Icon
Coolant Digital
Clock Digital
Battery Voltage Digital
Altimeter Digital
Hours Digital
FEATURES
RIOT 858 WITH ATAC
Color Sunset Orange/Woody’s Orange
Heat Exchanger Front/Long Tunnel
Starter Push-Button Electric Start
Handlebars Hooked
Lighting LED
Seating Trail
Standard Accessories 12V Outlet, Sport Front Bumper, Integrated Goggle Holder, Hand & Thumb Warmers, Ice Scratchers, Standard Brake Disc, Ratio Steering, ATACH Rear Storage, Tether Switch, Visor Plug-Ins
Windshield 5.5 in Low Height

*Vehicle specifications are subject to change.

 

*Price includes a one year warranty. Price does not include freight or set-up fees and is subject to change.

WARNING: Arctic Cat snowmobiles can be hazardous to operate. For your safety, all riders should read and understand their owner’s manual and safety instructions. Always wear an approved helmet and other safety apparel. Be aware of natural hazards you may encounter and don’t drink and ride. All scenes depicted or described were performed by professional riders under carefully controlled conditions. Never attempt to duplicate these maneuvers or encourage others to do so. Arctic Cat recommends that all operators take a safety training course. For safety and training information, please see your local dealer.