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2025 Arctic Cat Riot 858 ATAC 1.75 ES
2025 Arctic Cat Riot 858 ATAC 1.75 ES

Specs

General Information

Manufacturer
Arctic Cat
Arctic Cat
Model Year
2025
2025
Model
Riot 858 ATAC 1.75 ES
Riot 858 ATAC 1.75 ES
Model Code
S2025COJRTUSO
S2025COJRTUSO
Color
Sunset Orange / Woody's Orange
Sunset Orange / Woody's Orange

Dimensions

Length
Overall chassis - 130.5 in.
Overall chassis - 130.5 in.
Height
Overall chassis - 49 in.
Overall chassis - 49 in.
Width
Overall chassis - 48 - 49 in.
Overall chassis - 48 - 49 in.

Engine & Drivetrain

Engine
858 C-TEC2™, 2-Stroke
858 C-TEC2™, 2-Stroke
Cylinders
2
2
Cooling

Liquid

Coolant system capacity - 5.4 qt.

Heat exchanger - Front / long tunnel

Liquid

Coolant system capacity - 5.4 qt.

Heat exchanger - Front / long tunnel

Displacement
858 cc
858 cc
Bore x Stroke
3.3 x 3.0 in. (85 x 75.6 mm)
3.3 x 3.0 in. (85 x 75.6 mm)
Fuel System
Next Gen. C-TEC2
Next Gen. C-TEC2
Starting
Push-button electric
Push-button electric
Ignition

Digitally controlled CDI

Engine stator output - 270W @ 3,000 rpm

Digitally controlled CDI

Engine stator output - 270W @ 3,000 rpm

Lubrication
Electronic injection
Electronic injection
Drive System
AC Trail Belt Drive
AC Trail Belt Drive
Drive Clutch
ADAPT
ADAPT
Driven Clutch
ADAPT
ADAPT
Drive Sprocket
9 tooth, Exvolute
9 tooth, Exvolute
Clutch Calibration
0 - 5,000 ft.
0 - 5,000 ft.
Reverse
Push-button engine
Push-button engine
Transmission

Gearing - 27/60

Chain pitch - Belt

Gearing - 27/60

Chain pitch - Belt

Exhaust
APV IV with full stainless steel exhaust and EGT sensors
APV IV with full stainless steel exhaust and EGT sensors
Brakes

Stealth hydraulic master cylinder

Disc

Stealth hydraulic master cylinder

Disc

Fuel Type
Minimum octane - 91
Minimum octane - 91
Fuel Capacity
10.4 gal.
10.4 gal.
Oil Capacity
3.0 qt.
3.0 qt.

Operational

Handlebar
Hooked
Hooked
Instrumentation

Arctic Cat G8 digital display

Speedometer, tachometer, odometer, fuel, oil, clock, battery voltage, altimeter, hours - Digital

Coolant - LCD icon

Arctic Cat G8 digital display

Speedometer, tachometer, odometer, fuel, oil, clock, battery voltage, altimeter, hours - Digital

Coolant - LCD icon

Seating or Rider capacity
Trail
Trail
Skis

Type - G2 ProClimb

Width - 7 in.

Type - G2 ProClimb

Width - 7 in.

Ski Stance
38 - 40 in. adjustable
38 - 40 in. adjustable
Carbide
Runner type - Single runner with carbide
Runner type - Single runner with carbide
Track Type
Hurricane
Hurricane
Track LxWxH
146 x 15 x 1.75 in.
146 x 15 x 1.75 in.
Pitch
2.86 in.
2.86 in.

Other

Includes

Windshield - 5.5 in. low height

12V outlet, goggle holder, hand and thumb warmers, ice scratchers, ratio steering, ATACH rear storage, tether switch, visor plug-ins

Windshield - 5.5 in. low height

12V outlet, goggle holder, hand and thumb warmers, ice scratchers, ratio steering, ATACH rear storage, tether switch, visor plug-ins

Safety Features

Lighting - LED

Sport front bumper

Lighting - LED

Sport front bumper

Warranty
Factory - 12 months (In-season), 24 months (Pre-order)
Factory - 12 months (In-season), 24 months (Pre-order)

Suspension

Shocks

Ski - FOX 1.5 iQS

Front track - Arctic Cat IFP 1.5

Rear track - FOX 2.0 ZERO iQS

Ski - FOX 1.5 iQS

Front track - Arctic Cat IFP 1.5

Rear track - FOX 2.0 ZERO iQS

Front Suspension

AWS 39

Travel - 7.5 in.

Sway bar

AWS 39

Travel - 7.5 in.

Sway bar

Rear Suspension

Cross-action with 3 wheel rear axle assembly, torque-sensing link rear arm and adjustable torsion springs with ATAC System

Travel - 13.5 in.

Cross-action with 3 wheel rear axle assembly, torque-sensing link rear arm and adjustable torsion springs with ATAC System

Travel - 13.5 in.

Features

Features

  • A BREED OF POWER - 858 ENGINE: The 858 two-stroke engine is designed for seamless integration into the 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 exhaust valve design for more consistent power and cleaner emissions, and a crankcase for increased stroke and integrated engine mounts.
  • 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.
  • NAVIGATION AT YOUR FINGERTIPS - ARCTIC CAT G8 DIGITAL DISPLAY: The 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 cellular data, dependent on region, to share the ride with up to 15 people.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 its unique asymmetrical design, everyone will know that you're on an Arctic Cat.
  • 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.

Features

  • A BREED OF POWER - 858 ENGINE: The 858 two-stroke engine is designed for seamless integration into the 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 exhaust valve design for more consistent power and cleaner emissions, and a crankcase for increased stroke and integrated engine mounts.
  • 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.
  • NAVIGATION AT YOUR FINGERTIPS - ARCTIC CAT G8 DIGITAL DISPLAY: The 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 cellular data, dependent on region, to share the ride with up to 15 people.
  • 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.
  • 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.
  • 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.
  • 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.
  • 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 its unique asymmetrical design, everyone will know that you're on an Arctic Cat.
  • 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.