Polaris Pro RMK Turbo System


  • Price: Non-Intercooled System $5495.00
  • Air to Snow Intercooled System $5995.00 
  • call for Canadian pricing


  • 66 Series Aerocharger
  • Tuned Airbox
  • Stainless Steel Exhaust
  • Silicone Charge Tube
  • Snow to Air Intercooler Option
  • Stainless Steel Heat Shield
  • Dome Filter
  • Fuel Controller
  • Boost & AFR Gauges
  • Complete Clutching


Aerocharger has been the preferred turbocharger for Polaris snowmobile tuners since 1985, and this system has been available and tested constantly since 2011. The Aerocharger is a substantial innovation over conventional turbocharger technology, making it ideal for use with Liberty 2-stroke engines. The Aerocharger Pro RMK turbo system was built to prioritize horsepower-generating efficiency, and this equals an ultra-responsive, rideable system that excels at high altitude and on technical terrain.


System Specs

Performance Gains

The Aerocharger Pro-RMK system offers a performance range of 50-100 hp over stock at high altitude and average boost levels, with different results being possible depending on settings and octane.


At least 91 octane non-ethanol fuel is recommended for up to 5psi at elevations above 6000 ft. For 5psi or higher, a race gas mixture is strongly recommended for safe boosting of your engine. At 7 psi we recommend a 50/50 mix of 91 and 110 octane fuel; this roughly comes out to 100 octane. Any boost levels exceeding 10psi should use unmixed 110 octane fuel. It is always safer to run higher octane fuel rather than low octane fuel.

With a Timing Module Upgrade, boost can be safely increased while running pump gas at high elevation and sea level. Click the Upgrade Tab for information on the Timing Key Module.

Boost Levels

Max boost level is mechanically set by a pre-loaded spring inside the Aerocharger's integrated boost controller, and aftermarket boost controllers can also be used for additional boost control. See the Aerocharger page for additional information.

An Intercooler is recommended for Pro-RMKs set at boost levels higher than 7psi. Click the upgrade tab to read more about Intercooler options.

Big Bore/Compression Mods

The Aerocharger ProRMK System is compatible with engine mods such as big bore kits or lower/higher compression.

Reliability & Support

Aerocharger has a well-tested, strong-running and reliable turbo system. The Aerocharger doesn't require any more care or maintenance than any other turbocharger, and when properly installed your Aerocharger system should outlast the life of your sled. We will make sure you have the support you need - for any questions, troubleshooting or maintenance, don't hesitate to directly contact Aerocharger's engineers or your nearest Aerocharger dealer.


Aerocharger systems are designed so they can be installed at home by a rider with moderate mechanical ability and common garage tools, but many Aerocharger customers prefer to have their turbo system installed at a dealership or performance shop. Dealers report preferring Aerocharger technology because Aerocharger systems are properly designed and either simplify or eliminate many fail-prone components, thereby requiring much less support and maintenance.

Contact Aerocharger for information about dealers in your area.



Aerocharger 66 Series

VATN Technology

Aerocharger's powerful variable geometry tech optimizes turbine size, producing lag-free boost. Excellent performance for high altitude and technical riding. The ideal turbo for 2-strokes.

Independent Oil Supply

The Aerocharger contains it's own oil supply allowing for clean and simple installation, and reduced risk of complications when riding.

Non-Flooded Bearings

Innovative oil misting system allows for drag free bearing performance and ultra-fast spooling. A major performance increase over conventional journal bearings.

Fuel Management

Exclusive Fuel Programming

The Aerocommander fuel controller is pre-mapped with a proprietary program to fully optimize the Aerocharger's performance with the Pro-RMK. Maps are updated annually for improved performance. The Aerocommander is fully plug-and-play right out of the box.

Sequential Injection

Sequential injection improves fuel injection to enhance throttle response.

External MAP Sensor

The fuel controller hardware now includes an external three-bar manifold absolute pressure sensor. An external sensor provides an improved reading for smooth fueling, and makes the Aerocommander unit 100% water proof. Comes with a 2-Year Warranty.

 Air Box or Air to Snow Intercooler

Durably Built

Robust design allows for best air flow from the turbo. Stainless steel construction, finished with a baked-on ceramic coating.

Tuned Backwall

Designed to correctly reflect acoustic waves from the Pro-RMK intake, maintaining stock engine system efficiency that are critical to the Pro-RMKs performance.

Turbo Optimized

Correctly shaped to provide optimal air volume to the Aerocharged Pro-RMK engine.

Stainless Exhaust

TIG Welded

Durable construction by skilled production welders. Stainless Steel, finished with baked-on ceramic coating.

Stainless Steel

Designed to correctly reflect acoustic waves from the Pro-RMK intake, maintaining stock engine system efficiency that are critical to the Pro-RMKs performance.


Best Performance

An extensive clutch setup is included in all packages for the smoothest Polaris turbo snowmobile operation.

Full Setup

Includes a dual-angle helix that can be set for racing performance or backcountry performance. Also comes with an adjustable weight setup, primary spring, secondary spring, and Aerocharger's recommended settings based on boost and altitude.

Also Included

Custom Charge Tube

Silicone Construction - lightweight and durable for high pressurization.

Gauge Panel

Innovate AFR Gauge and Custom Boost Gauges are included.

Basic Vent kit

Heat dissipation is critical for best performance. This basic Snow Silk vent kit will keep your engine compartment dry while providing critical air flow.

Mounting Hardware

All necessary mounting hardware is included to help get the install completed faster.

Dome Filter

Stainless steel mesh intake screen filter.



Aerocharger offers several Pro-RMK performance upgrades. These options were developed for our race team, and are frequently requested by advanced tuners and riders.

Air to Snow Intercooler- $800

Air to Snow Intercooler

Allows for better operation of the turbo's performance. Coolant lines will need to be moved. Available in the Aerocharger Store.

Cold Air Intake Snorkel- $130

Deep Powder Performance

Mitigates snuffing in deep powder on Aerocharged RMKs. Includes custom-molded silicone tube, flexible outerwears snorkel assembly, pre-formed gasket seal, and all mounting hardware and cutting templates. Available in the Aerocharger Store.

rmk_Intake02 rmk_Intake01

Timing Key Module (2011-12 models)- $100.00

Performance Upgrade

This Timing Key Module allows higher boost at pump gas at high elevations, and the use of pump gas at sea level. It works by electronically controlling ignition timing.

With the Timing Module, 91 octane can be run at 5psi at sea level. The Timing Key also permits running 91 octane at 7psi boost at elevations of 6000' and up.

Vent Kits

Premium Air Flow

Reducing engine compartment heat is extremely important for best snowmobile performance, and these Snow Silk vents provide superior air flow compared to other leading brands. Snow Silk vents are resistant to tears, feature durable adhesive, and have water-repellant properties to keep the sled interior clean and dry. CAD modeled for perfect fitment to the Polaris RMK engine panel. Includes cutting templates for easy installation.

The Basic Kit covers all major sled panels. The Deluxe kit adds vents for every remaining panel on the sled.




Rider Profile: Team Crockett's Aerocharged Polaris ProRMK. Video courtesy Finlay Films.

Aerocharged Polaris RMK by Howe and Howe Tech

Aerocharged Polaris Pro RMK