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SideKick Turbo System for Polaris AXYS 850 (non-current)

SideKick Turbo System for Polaris AXYS 850 (non-current)

Regular price $3,500.00 Sale price $4,600.00

Unit price per 

Add an elevation-compensating turbocharger to your Polaris AXYS 850 Patriot with The BoonDocker SideKick (non-current) Turbo System. SideKick is capable of 14+ PSI and producing over +125 HP ! Patent Pending Deep Snow Exhaust technology utilizes the stock-exhaust-exit location for a quick and reversible installation. Electronic Boost Control means perfect performance, regardless of conditions. 


For the high-performance enthusiast, the BoonDocker SideKick is the benchmark for aftermarket snowmobile turbo kits. Our patented Deep-Snow Exhaust means your sled runs perfectly, regardless of conditions.



Fit and Compatibility
  • 2019+ Polaris AXYS 850 (Patriot)
Kit Configurations
  1. Intercooled
    1. Yes: Intercooled
      1. This option includes the Charge-tube-style (SideKick) Intercooler System (complete with hardware)
    2. No: Non-Intercooled
      1. This option includes the non-intercooled configuration, including non-intercooled air-box.
    3. How do I choose which option is right for me:
      1. Want the least complex, lightweight option: Non-Intercooled
      2. Primarily tree riding without extended WOT: Non-Intercooled
      3. Primarily tree riding with extended WOT: Intercooled
      4. Chute Climbing: Intercooled
      5. Hill-Climb / Racing: Intercooled
      6. High Elevation and High Boost: Intercooled
  2. Control Box
    1. Adjustable (Super Tuner or ST)
      1. Adjustable
      2. On-board Display Screen (stats) w/buttons (adjustability)
      3. USB-updatable
      4. Extra length harness for dash mounting
    2. Non-Adjustable (SideKick 2.0)
      1. Non-adjustable (other than tune flashes)
      2. No screen or buttons
      3. USB-updatable
      4. Intended to mount under the hood
Stats and Specs
  • All SideKick options are complete (except clutching) and come with everything you need to bolt-on and run 50/50 mix fuel above 2,000 feet.
  • CLUTCHING NOT INCLUDED: Clutching purchased separately (REQUIRED)
  • Includes "Blue" actuator for 4-8 PSI. Additional actuators available
  • Turbocharger is capable of >14 PSI 
  • Additional parts may be required for different power levels, elevations and/or different fuels. (See upgrades & FAQ's)
  • Fully Heat Shielded
  • Includes fuel-system upgrade
  • Deep Snow Technology: Prevents engine cap-off
  • Backcountry Quiet Technology: Our goal is to produce products that have minimal impact on noise
  • 2860-sized high-quality ball-bearing turbo
  • Increased wheel speeds and decreased spool time from previous generations
  • Increased throttle response 
  • Intercooler Option:
    • Non-current charge-tube-style intercooler
      • Intercoolers reduce charge air temperatures to allow your system to create more power. Cold air is more dense. More O2 means more fuel, which means more power.
      • An intercooler also levels out charge-air temps which improves consistency across many different riding scenarios and helps prevent heat soaking.
      • An intercooler is strongly suggested for high-boost applications especially at high-elevations. Higher boost at higher elevations creates significantly more heat as the charger has to work harder to compress less-dense atmosphere. Intercoolers are strongly suggested for customers that operate at WOT for extended periods of time. An intercooler is recommended for all applications.
      • Adding an Intercooler is easiest at the time of initial installation. Because the heat exchanger is built into the airbox, adding the intercooler later requires more work and is more expensive than choosing the intercooler during your initial build.

    • SuperTuner Adjustable Control Box Option
      • Upgrade your SideKick control box to a fully adjustable SuperTuner! Built with the same logic, EBC and auto-adjustments as SideKick 2.0, the SuperTuner (ST) is the next level in controlling your ride. Our small display screen provides you with stats from your engine (boost set-point, actual boost, max boost, max RPM’s, injector duty cycle, charge air temperatures, and throttle position). The harness has been lengthened, so you can mount it on your dash. Because of the display, the control box is slightly larger than the SideKick 2.0. The primary function of this tool is for reviewing stats and for adjusting your boost. Although the ST control box is a fully functional fuel calibration tool, those strategies are very complex, and user-adjustment is not recommended.
      • Includes display with buttons
      • Includes longer harness, for easy dash-mounting
      • Read real-time stats - Easier to troubleshoot issues
      • Adjust boost levels, on the mountain
      • Adjust fueling calibration, on the mountain
     Fuel Requirements
    • Pump Gas (91-octane, non-ethanol)
      • Requires Idaho or Colorado head
    • Ethanol Gas (91-octane, 10% ethanol)
      • Requires Idaho or Colorado head
    • Mix (50% Av-Gas / 50% 91-Octane) (standard kit configuration)
    • Av-Gas (100LL or higher octane) 
      • Black actuator required for >8 PSI
    • E85 -  Not Available 
    Suggested Upgrades

    Click the link next to ANY upgrade to learn more or buy now

    • Fuel System Upgrade:
      • An upgraded fuel system includes auxiliary injectors in our charge-air box (on some models, an upgraded fuel system may include larger injectors to replace stock injectors), fuel rail, and electronics to control these injectors. An upgraded fuel system is required to run pump-gas in most applications (if available) and required to run high-boost in all applications. An upgraded fuel system is also required to our kits at low elevations. Fuel System Upgrade is included in all Polaris snowmobile kits.
    • SideKick Intercooler:
      • While it's best to buy the intercooler when you buy the kit, our SideKick Intercooler is available as an upgrade
    • Clutching:
      • We STRONGLY suggest our BoonDocker High Energy ™ clutching.
      • Base Kits: For low-boost, high-elevation only
      • Premium Kits: suggested for all applications
    • Heads: 
      • Colorado (Billet or re-cut)
        • Larger combustion chamber vs. stock
        • Allows for Pump gas above 8,500 feet 
        • High-Boost applications - Turn up your boost even higher with the Colorado head
        • Great for low elevation applications with higher boost or higher octane
      • Idaho (Billet or re-cut)
        • Larger combustion chamber vs. Colorado head
        • Allows for Pump gas above 4,000 feet
        • Should ONLY be used in pump-gas application
    • Actuators: 
      • Blue: 4-8 PSI (max 8.4), comes standard with kit
      • Black: 6-10 PSI (max 11.2), required for high-boost. Will increase throttle response and produces a more powerful seat-of-the-pants feeling, even on lower-boost kits. All things equal, upgrading your actuator will increase the octane requirement
      • Double-Black: 8-12 PSI suggested only for seasoned mod-sled builders. All things equal, upgrading your actuator will increase the octane requirement
    Frequently Asked Questions

    How do I need to configure my kit for different scenarios? 

    The same kit, with just a few additional parts, can produce a wide range of results. Upgrades are purchased separately. Here are our standard minimum configurations:
    • Ethanol Gas (91-octane, 10% ethanol) Requirements (>5,000 feet)
      • Intercooled or Non-Intercooled kit
      • Adjustable or Non-adjustable control box
      • High Energy ™ Base clutch kit or High Energy ™ Premium clutch kit
      • Idaho Head (Colorado head may work above 8,500 ft)
      • Blue Actuator (Black actuator may work above 7,500 ft)
    • Pump Gas (91-octane, non ethanol) Requirements (>4,000 feet)
      • Intercooled or Non-Intercooled kit
      • Adjustable or Non-adjustable control box
      • High Energy ™ Base clutch kit or High Energy ™ Premium clutch kit
      • Idaho Head (Colorado head may work above 8,500 ft)
      • Blue Actuator (Black actuator may work above 7,500 ft)
    • 50/50 Mix (>2,000 feet)
      • Intercooled or Non-Intercooled kit
      • Adjustable or Non-adjustable control box
      • High Energy ™ Premium clutch kit
      • Stock Head or Colorado Head
      • Blue Actuator or Black Actuator (preferred above 5,000 ft)
    • Av-Gas
      • Intercooled or Non-Intercooled kit
      • Adjustable or Non-adjustable control box
      • High Energy ™ Premium clutch kit
      • Stock Head or Colorado Head
      • Black Actuator

    How long does it take to install? 

    A qualified technician should be able to install this product as follows:
    • Non-Intercooled: 6 hours
    • Intercooled: 7 hours

    Can BoonDocker install this product?

    Absolutely! We have a fully-staffed service department. We know our products best, and can go beyond a simple installation with our Built by BoonDocker. Know that your vehicle is ready for the weekend. We also have a strong dealer network across the nation. Our premiere dealers have demonstrated the knowledge of our products and sell enough volume to be competent in both installation and service.

    Where are the installation instructions?

    The installation instructions are provided below. Please click on the image to download the PDF. We suggest you browse the instructions before you determine if you want to install this product yourself or if you want a dealer to install.

    How do I get my tune(s) for my BoonDocker Control Box?

    We provide tunes for download:

    Does BoonDocker offer an ECU Re-flash option?

    Yes, we offer ECU re-flash options (coming soon). 

    Why does BoonDocker use a piggyback fuel controller?

    We utilize a piggyback-style fuel controller for several reasons. Primarily, to electronically control boost. BoonDocker is the ONLY kit on the market that uses active electronic boost control, meaning your sled will work, regardless of conditions.

    How do I need to configure my clutching?

    Please visit our Clutching page for this application

    Can I install this product myself?

    This product requires a moderate skill level to install. A mechanically inclined person can easily tackle this project. We suggest that you look at the instructions and determine if you need assistance from our service department or one of our dealers.

    Are any specialty tools required?

    You will need a secondary-clutch compression tool to install the clutch kit. Intercooled kits require cutting tools and a drill. Otherwise, simple hand tools are required.

    Do you have an E85 tune

    No, we don't produce E-85 tunes.

    Is the Kit complete

    The SideKick kit is complete, other than clutching, with everything you need to have mixed-gas fun. There are additional parts required to utilize the high-octane or pump-gas configurations. There are also some optional accessories that can improve performance. Both are listed above.

    Non-Intercooled Instructions


    (click image for instructions)

    Intercooled Instructions


    (click image for instructions)

    Tunnel Bracket Template


    (click image for instructions)

    Intercooled Supplemental Instructions


    (click image for instructions)


    Hand crafted products built in Idaho

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