SPEED, POWER AND AGILITY
The CATALYST™ platform transformed the experience of mountain, trail and crossover riders alike. Now with the 858 engine, you can push the limits even further with bigger power in the industry's easiest to ride package.
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Based on decades of innovation, the 858 engine was built by Arctic Cat for Arctic Cat. Designed specifically for the CATALYST platform, the 858's proprietary design enhances power, agility and control. From working around the centerline steering to integrating components for weight reduction and increased performance, no compromises were made in pursuit of the ultimate ride.
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The 858cc engine provides all the horsepower and airflow you need for superior performance. The air intake system maximizes airflow for more power output while multiple secondary, under-hood inlets prevent snow ingestion for optimized performance in all conditions. Our newly patented exhaust valve design also stays tight to the piston as it moves. This creates smoother exhaust port flow through a wider RPM range on both primary and auxiliary ports — and cleaner emissions.
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Compared to Arctic Cat's 794cc engine, the 858 provides 11% more power and torque — and in a package that's 4% lighter. This gives you an optimal power-to-weight ratio for quicker acceleration and a more responsive, pulse-pounding ride. To keep a lightweight, compact size for the CATALYST platform, Arctic Cat used an 85mm bore while increasing to a 75.6 stroke to achieve more horsepower and deep, bottomless torque that pulls hard and smoothly through the entire RPM range. The result is a power-dense, easier to ride package that takes carving through deep snow, maneuvering tight trails and boondocking to the next level.
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The centralized mass and low center of gravity work with the CATALYST platform to provide precision and control unlike anything you’ve experienced. The innovative laydown engine design achieves the best mass centralization of any snowmobile on the market while staying lightweight and compact. The result is a powerful, easy-to-ride sled.
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The CATALYST platform was designed to be durable and easy to service, and the 858 engine is no exception. With fewer parts and an integrated mounting design in the crankcase, it’s stronger, sturdier and easier to maintain. With the easily removable, completely tool-less plastic panels on CATALYST snowmobiles, you can quickly access critical components to admire the beauty beneath the surface.
Explore the CATALYST Platform
We built it from the skis up to give you a completely new riding experience. Use this interactive tool to explore the features that make the CATALYST platform the ride you've been waiting for.
NEW INTEGRATED GARMIN DISPLAY
The 858 engine isn’t the only news for the CATALYST platform. We’ve added an 8-in. Arctic Cat G8 display, powered by Garmin to select 2025 CATALYST platform sleds.
FOR EVERY KIND OF RIDER
Each CATALYST snowmobile is designed and optimized to meet your specialized performance, handling and balance needs. With the choice of the 858 or 600 engines, it’s easy to find the perfect sled for any mountain, trail or crossover ride.
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The CATALYST platform elevated expectations for riders, and now the 858 engine is raising the bar even higher. Learn more about the 858 engine from the team who created it.
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