2026 Arctic Cat HCR 858

MSRP: $17,999.00

info specifications

Powerful and Responsive
400-Series EFI Engine
A 397cc single-cylinder 2-stroke engine with 65-class horsepower and electronic fuel injection (EFI) offers quicker, more responsive power that gives you a smoother take off every time.

Single-Cylinder 2-Stroke EFI Engine
With an industry-first design that’s compact and lightweight, this EFI engine brings 65-hp and 397cc performance to every ride, all while remaining under 50 lbs. A 3-stage exhaust valve system takes this power to the next level, delivering improved throttle response and better overall engine performance. As a liquid cooled engine, a counter balance shaft eliminates most engine vibration. The result—a lightweight-but-mighty power source that fuels a ride like no other.

Eliminates Bumpy Rides
Slide-Rail Rear Suspension
This responsive rear suspension uses a full 12.5 inches of travel to absorb any bumps on the trail. With support like this, every ride will be so stable and smooth, you won't even notice the rough snow.

Enhanced Maneuverability
Mid-Size Chassis
There's nothing better than a snowmobile that's easy to handle. With its lightweight, mid-sized chassis, the Riot 400 gives you more control over your ride, on- or off-trail.

Smooth Power Delivery
Arctic Drive System
The durable Arctic Drive System has a CVTech Trailbloc drive clutch and CVTech Invance driven clutch to deliver power to the snow. It also provides more low-end power and throttle control.

Proven Suspension
Arctic Mountain Suspension
The Arctic Mountain Suspension (AMS) is built specifically to navigate through deep snow. With lightweight spindles and precision engineered suspension geometry designed with mountain riding in mind, AMS optimizes your performance in deep snow.

Arctic Mountain Suspension
AMS is our proven, lightweight rear suspension system utilized on all of our full-size mountain sleds. This system keeps the sled nimble in the varying snow conditions of the backcountry and provides optimal off-trail cornering, as well as more predictable counter steering when side-hilling. Paired with front and back hydraulic twin tube shocks, AMS provides excellent bump absorption. Plus, the lightweight, forged-aluminum spindles sit at a 27 degree spindle caster angle, providing optimal ski camber for off-trail cornering and more predictable counter-steering when side-hilling. They’re built to reduce drag, while the durable dual-phase alloy-steel A-arms are tailor-made to maneuver in deep snow.

Better Powder Performance
Cobra Track
With a unique lug shape and pattern, this 146-in track with 1.6-in lugs delivers the optimal balance of traction and float in loose snow. This gives you enhanced powder performance while reducing track noise.

Ready To Go
Turn-Key Electric Start
The Riot 400 comes with a convenient turn-key electric start and magnetic tether switch, offering a quick start and additional safety.

Easily Access Information
Powersport Gauge
Everything you need to know is now in one place. Be fully aware of everything going on with your vehicle with this easy-to-read, digital display.

Features
400-Series EFI Engine
Hydraulic Twin Tube Shocks
Cobra™ Track
Powersport Gauge

Arctic Cat Riot 400 - Built to Break Limits.

Specifications

Engine

Engine Type	400, 2-Stroke
Displacement	397cc
Cooling	Liquid
Cylinders	1
Bore x Stroke	85 x 70 mm
Lubrication	Electronic Injection
Ignition	Digitally Controlled CDI
Engine Stator Output	270W @ 3000 RPM
Fuel Delivery	Electronic Fuel Injected (EFI)
Exhaust	APV w/ Tuned Pipe, Pipe Sensor, Manifold & Stainless Steel Muffler
Fuel Capacity	11.7 gal
Oil System Capacity	3.25 qt
Coolant System Capacity	5.0 qt
Minimum Octane	91

powertrain

Drive Clutch	CVTech Trailbloc
Driven Clutch	CV Tech Invance
Drive System	Arctic Drive System
Brakes	Stealth Hydraulic Master Cylinder
Clutch Calibration	0-5,000 ft
Gearing	19/50
Chain Pitch	90
Track Drive Sprocket	8 Tooth, 2.86 Pitch, Involute
Reverse	Push-Button Engine

Suspensions

Front Suspension	Arctic Mountain Suspension (AMS)
Ski Shocks	Hydraulic Twin Tube
Sway Bar	N/A
Front Travel	7.2 in
Rear Suspension	Slide-Rail, Dual Shock & Adjustable Torsion Springs
Front Track Shock	Hydraulic Twin Tube
Rear Track Shock	Hydraulic Twin Tube
Rear Travel	12.5 in

Dimensions

Overall Chassis Length	128 in
Overall Chassis Width	44-45 in
Overall Chassis Height	45 in
Track Type	Cobra
Track Width	15 in
Track Length	146 in
Lug	1.60 in
Pitch	2.86 in
Ski Stance	37.5-38.5 in - Adjustable
Ski Type/Width	Trail - 6 in
Runner Type	Single Runner

Instrumentation

Type of Gauge	Powersport
Speedometer	Digital
Tachometer	Digital
Odometer	Digital
Fuel	Digital
Oil	Indicator Light
Coolant	Indicator Light
Clock	N/A
Battery Voltage	N/A
Altimeter	N/A
Hours	Digital

Features

Color	Black/Orange Sorbet
Heat Exchanger	Front/Long Tunnel
Starter	Turnkey Electric Start
Handlebars	Hooked
Lighting	Halogen 1-Bulb
Seating	Mountain
Standard Accessories	Hand & Thumb Warmers, Standard Brake Disc, Standard Steering, Tether Switch
Windshield	4 in Low Height

Certain features may require an additional add-on package that may not be included in the retail or sale price. Please contact the dealership for full details.

WINTER HOURS STARTING DECEMBER 1, 2025 MONDAY - FRIDAY 9:00 AM TO 5:00 PM, SATURDAY BY APPOINTMENT ONLY, CLOSED SUNDAY

2026 Arctic Cat Riot 400

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2026 Arctic Cat HCR 858

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WINTER HOURS STARTING DECEMBER 1, 2025 MONDAY - FRIDAY 9:00 AM TO 5:00 PM, SATURDAY BY APPOINTMENT ONLY, CLOSED SUNDAY

2026 Arctic Cat Riot 400

Highlights

RECENTLY VIEWED

2026 Arctic Cat HCR 858

Specifications

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