Description

Turn Your Arctic Cat 858 Into a 200+ Horsepower Machine

Add 35 Horsepower on Pump Gas at the Push of a Button

The Biggest Bang-for-Your-Buck Performance Upgrade Available

If you’re looking for the single most dramatic performance upgrade available for your Arctic Cat 858, nothing comes close to the Straightline Performance Complete Nitrous Kit. Designed exclusively for the new Arctic Cat 858 platform, this complete bolt-on system instantly transforms your sled into a 200+ horsepower machine while operating on 91-octane pump gasoline.

With the push of a button, the Straightline Performance Nitrous Kit delivers an additional 35 horsepower, providing explosive acceleration, incredible pull through the mid-range, and unmatched top-end performance. Whether you’re climbing mountains, racing across the lake, or looking for an edge on the trail, this system delivers horsepower exactly when you want it.

Unlike complicated custom systems, this kit is engineered specifically for the Arctic Cat 858 and includes everything required for a clean, straightforward installation. Every component is designed to fit your sled without fabrication, making this a true plug-and-play performance upgrade.

To maximize performance and ensure proper exhaust flow, this nitrous kit requires a lightweight performance muffler. Straightline Performance recommends pairing the system with our Quiet Lightweight Muffler, allowing you to maintain a trail-friendly exhaust note while supporting the airflow necessary for maximum nitrous performance.

From the patented nozzle technology to the premium hardware and precision calibration, every component has been developed to deliver reliable, repeatable horsepower every time you activate the system.

If you want the largest horsepower increase per dollar available for your Arctic Cat 858, this is the kit you’ve been waiting for.

Performance Benefits

• Instantly adds 35 horsepower
• Produces 200+ horsepower on pump gas
• Operates on 91-octane gasoline
• Massive improvement in acceleration
• Incredible mid-range power
• Stronger top-end performance
• Push-button horsepower whenever you need it
• One of the highest horsepower-per-dollar upgrades available
• Designed specifically for the Arctic Cat 858

Features & Benefits

• Complete nitrous system for the Arctic Cat 858
• Engineered exclusively for the 858 platform
• Adds 35 horsepower
• Produces over 200 horsepower on pump gas
• Complete bolt-on installation
• Premium billet components
• High-quality braided stainless steel lines
• Precision nitrous and fuel delivery
• Reliable, repeatable performance
• Complete wiring harness included
• Professional fit and finish
• Designed and manufactured by Straightline Performance

Lightweight Muffler Required

For proper performance, this nitrous system requires a lightweight performance muffler.

Straightline Performance recommends our:

Quiet Lightweight Muffler

Benefits include:

• Excellent exhaust flow
• Lightweight construction
• Trail-friendly sound level
• Perfect match for the 858 Nitrous Kit
• Maximum nitrous performance
• Easy bolt-on installation

Pairing the nitrous kit with the Straightline Performance Quiet Muffler provides the ideal combination of power, reliability, and trail usability.

Compatibility

Fits:

Arctic Cat

• 858 Models

Designed exclusively for the Arctic Cat 858 platform.