2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES

Medium Green / BlackNew Snowmobiles

MSRP

$18,299

2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 1
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 2
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 3
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 4
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 5
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 6
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2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 1
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 2
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 3
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 4
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 5
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 6
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MOUNTAIN RIDING REINVENTED
Mountain riding just got a lot more interesting. The Arctic Cat M ALPHA ONE will revolutionize how you explore the backcountry with the groundbreaking CATALYST platform.
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2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES

Condition
New
Category
Snowmobiles
Model Type
Mountain
Model Code
S2025CMJMJUSG
Color
Medium Green / Black

Features

  • A BREED OF POWER - ALL 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.
  • ULTIMATE ADJUSTABILITY - AC5S SHOCKS: Designed by Arctic Cat, for Arctic Cat, the AC5S shocks offer 5 different positions and adjustable spring preload. They are uniquely calibrated for backcountry riding and showcase both Arctic Cat's legacy of durability and its signature style.
  • OPTIMIZED FOR DEEP SNOW - AWS 36 FRONT SUSPENSION: The AWS 36 Front Suspension was designed specifically with the M 858 in mind. With lightweight spindles and precision engineered geometry, this suspension system optimizes your performance in deep snow.
  • INCREASED DURABILITY - ARCTIC CAT MOUNTAIN 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. Additionally, the track included with the AC Mountain Belt Drive ensures that the sled gets up on the snow quicker, avoiding trenching issues.
  • UNMATCHED CONTROL - ALPHA ONE SINGLE-BEAM REAR SUSPENSION: Arctic Cat’s revolutionary single-beam rear suspension changes the game for mountain snowmobiles. The unique monorail design sheds snow to keep your sled light and equalizes floatation across the width of the track. ALPHA ONE offers unmatched maneuverability and flotation - allowing you effortlessly go where others are left stuck and tired.
  • 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.
  • 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.
  • UNPRECEDENTED TRACTION - POWER CLAW TRACK: Unlock the backcountry with Power Claw™, a lightweight track that delivers the ultimate deep snow traction and performance. The staggered, forward curving paddle tower design won’t fold over, allowing you to float over the deepest snow. Available in 146-in, 154-in and 165-in with 2.6-in or 3.0-in lugs.
  • 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.

General Information

Manufacturer
Arctic Cat
Model Year
2025
Model
M 858 Alpha One Sno Pro 165 3.0 ES
Model Code
S2025CMJMJUSG
Color
Medium Green / Black

Dimensions

Length
Overall chassis - 131 in.
Height
Overall chassis - 50 in.
Width
Overall chassis - 42 - 44 in.

Engine & Drivetrain

Engine
858, 2-Stroke
Cylinders
2
Cooling

Liquid

Coolant System Capacity - 4.2 qt.

Front / Short tunnel heat exchanger

Displacement
858 cc
Bore x Stroke
3.3 x 3 in. (85 x 75.6 mm)
Fuel System
Next Gen. C-TEC2
Starting
Push-Button electric
Ignition

Digitally Controlled CDI

Engine Stator Output - 270W @ 3,000 rpm

Lubrication
Electronic Injection
Drive System
AC M Belt Drive
Drive Clutch
ADAPT
Driven Clutch
ADAPT
Drive Sprocket
7 Tooth, 3.50 Pitch, Exvolute
Clutch Calibration
6,000 - 8,000 ft.
Reverse
Push-Button Engine
Transmission

Gearing - 24 / 63

Chain pitch - Belt

Exhaust
APV IV with Full Stainless Steel Exhaust and EGT Sensors
Brakes

Disc

Stealth Hydraulic Master Cylinder

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

Operational

Handlebar
Hooked with grab handle
Instrumentation

Sport gauge

Speedometer, tachometer, odometer, fuel and hours - Digital

Oil - LCD Icon

Coolant - Digital Bar Graph

Seating or Rider capacity
Mountain
Skis

Type - G2 ProClimb

Width - 7 in.

Ski Stance
35 - 37 in. adjustable
Carbide
Runner type - Single runner with Carbide
Track Type
PowerClaw
Track LxWxH
165 x 15 x 3.00 in.
Pitch
3.50 in.

Other

Includes
12V Outlet, Integrated Goggle Holder, ATACH Rear Storage, Hand and Thumb Warmers, Ice Scratchers, Vertical Steering, Tether Switch, Visor Plug-Ins
Safety Features

Lighting - LED

Sport Front Bumper

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

Suspension

Shocks
Ski / Front Track / Rear Track - AC5S
Front Suspension

AWS 36

Travel - 7.6 in.

Rear Suspension

ALPHA ONE

Travel - 15.5 in.

Gallery

2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 1
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 2
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 3
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 4
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 5
2025 Arctic Cat M 858 Alpha One Sno Pro 165 3.0 ES in Huron, Ohio - Photo 6

We are in the process of adding model data for 2025 Arctic Cat models. We do everything we can to ensure that all of our information is correct; however, during the initial entry process, we reserve the right to make additions, deletions, or modifications to model specifications, features, images and prices displayed on this and any associated webpage at any time without prior notice. Please contact your local dealer to confirm all information.

Due to continued challenges across supplier networks as well as increasing logistics costs, product pricing, freight charges, specifications, and features are subject to change at any time without prior notice. Please confirm all information with your local dealership.

Images, where available, are presented as reasonable facsimiles of the offered unit and/or manufacturer stock images. Non-standard options or features may be represented. No guarantee of availability or inclusion of displayed options should be inferred; contact the dealer for more details.

  • Price, if shown and unless otherwise noted, represents the Manufacturer's Suggested Retail Price (MSRP) or dealer unit price and does not include government fees, taxes, dealer vehicle freight/preparation, dealer document preparation charges, labor, installation, or any finance charges (if applicable). MSRP and/or final sales price will vary depending on options or accessories selected; contact dealer for more details.

  • Images, where available, are presented as reasonable facsimiles of the offered unit and/or manufacturer stock images. Non-standard options or features may be represented. No guarantee of availability or inclusion of displayed options should be inferred; contact dealer for more details.