M 858 Sno Pro
Overview:
HIT HARD. HOLD THE LINE.
- 858cc C-TEC2 Twin Cylinder EFI Engine
- AWS™ 36 Front Suspension
- AC5S Premium Shocks
- Twin Rail Suspension
- 15” x 146”/154” x 2.6” PowerClaw Track
- Sport Gauge or Arctic Cat G8 Display Option
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Features
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.
Purpose-Built Power
858 ENGINE
Push the limits with a strong, responsive output across the full RPM range with a consistent pull you can feel. The 858 two-stroke EFI engine is designed for seamless integration with the Arctic Cat CATALYST platform. Patented exhaust valves and a sealed intake system maximize airflow and throttle response, while a purpose-built design reduces weight. All resulting in a compact, durable package built to perform season after season.
Keep Yourself Planted
TWIN RAIL SUSPENSION
The twin rail suspension is built for one thing: carving and climbing with control. With two rails, it delivers a solid, predictable feel that keeps the track straight and the power locked in — even when the hill gets rutted, windblown or near vertical. Compared to single rail setups, it’s less flickable but more planted — perfect for riders who’d rather hold the line than play around it.
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.
ULTIMATE ADJUSTABILITY
AC5S SHOCKS
Meet our anything-but-stock shocks. AC5S ski, front and rear track shocks are designed and calibrated at Arctic Cat for Sno Pro® sleds and feature a unique color scheme. The 5-position adjustment with adjustable spring preload gives you even more flexibility to finetune your ride.
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.
UNPRECEDENTED TRACTION
POWERCLAW TRACK
Unlock the backcountry with PowerClaw™. 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 and 154-in with 2.6-in lugs.
EASIER STEERING
G2 PROCLIMB SKIS
The lightweight G2 ProClimb™ 7-inch Mountain Ski is tapered to stay on top of the snow. The ski works in tandem with the AMS spindles for easier steering and better deep snow performance.
Specifications
| MODEL | M 858 Sno Pro |
| Engine | |
| Engine Type | 2-Stroke |
| Displacement | 858cc |
| Cooling | Liquid |
| Cylinders | 2 |
| Bore x Stroke | 85 x 75.6 mm |
| Lubrication | Electronic Injection |
| Ignition | Digitally Controlled CDI |
| Engine Stator Output | 270W @ 3000 RPM |
| Fuel Delivery | Next Generation 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 | 4.2 qt |
| Minimum Octane | 91 |
| Powertrain | |
| Drive Clutch | ADAPT |
| Driven Clutch | ADAPT |
| Drive System | AC M Belt Drive |
| Brakes | Stealth 88 Hydraulic Master Cylinder |
| Clutch Calibration | 6,000-8,000 ft |
| Gearing | 24/63 (2.6 in) |
| Chain Pitch | Belt |
| Track Drive Sprocket | 9 tooth, 2.86 pitch, exvolute |
| Reverse | Push-Button Engine |
| Suspension | |
| Front Suspension | AWS 36 |
| Ski Shocks | AC5S |
| Sway Bar | NA |
| Front Travel | 7.6 in |
| Rear Suspension | Mountain Twin-Rail |
| Front Track Shock | AC5S |
| Rear Track Shock | AC5S |
| Rear Travel | 13.5 in. Or 14.5 in. |
| Dimensions | |
| Overall Chassis Length | 126.5 in. |
| Overall Chassis Width | 42-44 in |
| Overall Chassis Height | 50 in |
| Track Type | PowerClaw |
| Track Width | 15 in |
| Track Length | 146 in Or 154 in |
| Lug | 2.60 in. |
| Pitch | 2.86 in. |
| Ski Stance | 35-37 in - Adjustable |
| Ski Type/Width | G2 ProClimb - 7 in |
| Runner Type | Single Runner w/ Carbide |
| Instrumentation | |
| Type of Gauge | Sport Or G8 Or G8 w/o GRR (CAN) |
| Speedometer | Digital |
| Tachometer | Digital |
| Odometer | Digital |
| Fuel | Digital |
| Oil | LCD Icon |
| Coolant | Digital Bar Graph (Sport) Or LCD Icon (G8) |
| Clock | NA (Sport) Or Digital (G8) |
| Battery Voltage | NA (Sport) Or Digital (G8) |
| Altimeter | NA (Sport) Or Digital (G8) |
| Hours | Digital |
| Features | |
| Color | Black |
| Heat Exchanger | Front/Long tunnel |
| Starter | Manual Or Push-Button Electric Start |
| Handlebars | Hooked w/ Grab Handle |
| Lighting | LED |
| Seating | Mountain |
| Standard Accessories | 12V Outlet, Sport Front Bumper, Integrated Goggle Holder, ATACH Mounting, Hand & Thumb Warmers, Ice Scratchers, Lightweight Mountain Brake Disc, Vertical Steering, Tether Switch, Visor Plug-In |
| Windshield | NA |