Product Overview

The 2025 Arctic Cat M858 Sno Pro ES is a deep-snow mountain snowmobile built on the lightweight Catalyst platform.

Technical Specs

Features and Options

• Engine: All-new 858cc liquid-cooled 2-stroke, 2-cylinder engine with Next Gen C-Tec2 EFI, offering an 8% increase in displacement and an 11% power increase over the previous C-Tec2 800 while weighing 4% less.
• Platform & Drive: Catalyst chassis with AC M Belt Drive and ADAPT clutches.
• Rear Suspension: Alpha One mono-rail rear suspension or Mountain Twin-Rail configuration depending on the specific model variant.
• Shocks: AC5S or Fox-style adjustable shocks designed for balanced trail and mountain handling.
• Track Options: PowerClaw tracks available in lengths such as 146″, 154″, or 165″ with lug heights of 2.6″ or 3.0″.
• ES (Electric Start / Reverse): Equipped with push-button reverse and convenience features like LED headlights, sport gauge, and heated grips.