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Speedwerx Exterminator Kit for 2022-2024 Polaris 850 Patriot Boost RMK

The Speedwerx Exterminator Kit for the Polaris 850 Patriot Boost RMK combines our ECU Tune, choice of L2 Competition Series Lightweight Stainless Steel Muffler or Lightweight Ceramic Coated Mufflers, Hypershift Clutch Kit, High Flow Intake Vent, and Pipe Springs in one convenient package. Your choice of tunes will unlock maximum power and performance, the exhausts shed weight and sound great, and the clutching puts the added power to the ground. Our optional Panel Vent Kits help rid the extra heat more power and boost generates, and the EZ LYNK 3 offers diagnostics, data logging, and flashing capabilities.

  • Speedwerx ECU Tune
  • L2 Competition Series Stainless Steel Muffler or Standard Lightweight Ceramic Coated Muffler 
  • Hypershift Clutch Kit
  • High Flow Intake Vent
  • Three additional Pipe Springs


Product Updates Dec 2023:


These machines are very sensitive to the overall set up and load from clutching and traction specifically. Mixing and matching parts from company to company is not advised and will more than likely lead to a poor running machine. 91 Non-Oxy Gas is must as the sled’s performance really suffers when running in Ethanol mode. Customers riding in California or other areas where 91 Octane Non-Oxy Gas is not available, we highly suggest adding some 100 LL AV Gas to your pump gas so you do not have to run in Ethanol mode. 

As we have gotten more time on these machines, we are learning a lot more about them and what they like and do not like.

Available components and recommended combinations:

RMK Boost: 

Stage 1: Stock 2023 updated ECU Tune for 91 Non-Oxy Pump Gas, Lightweight Muffler, and Hypershift Clutch Kit. Optional Intake Vent and Panel Vents also available.

Stage 2: Speedwerx 91 Non-Oxy Pump Gas ECU Tune, Lightweight Muffler, and Hypershift Clutch Kit. Optional Intake Vent and Panel Vents also available. Below 6,000’ may require a mix of 100 LL AV Gas. When 91 Non-Oxy Gas is not available, additional 100 LL fuel is recommended.

Stage 3: Speedwerx 50/50 ECU Tune for 91 Non-Oxy Pump Gas/ 100 LL AV Gas Blend, Lightweight Muffler, and Hypershift Clutch Kit. Optional Intake Vent and Panel Vents also available. Below 6,000’ may require more 100 LL AV Gas. When 91 Non-Oxy Gas is not available, additional 100 LL fuel is recommended.

Stage 4: Speedwerx 100 LL AV Gas ECU Tune, Lightweight Muffler, and Hypershift Clutch Kit. Optional Intake Vent and Panel Vents also available. 

3 Stage Dash Flash: Allows you to have 3 programs installed at one time and you can change maps on your dash. $ 449.95. Keep in mind with the EZ LYNK you can change maps at any time with your cell phone.


Mufflers: Our L2 and Standard Lightweight Mufflers are working great on all the available power levels. We have seen issues with other mufflers on the market as they do not flow as good as the stock system, and they have a higher back pressure which throws the mapping and tuning off and makes the sleds more prone to having run-ability issues.

Clutching:  We focused a lot on throttle response and acceleration with our setups. New for 2023-2024 season we will be releasing our setups using our all new “RIPPER“ series clutch weighs- projected availability November 2023 pending snow conditions to finalize calibrations. These weights have 2 main adjustment points 1 in the body and 1 in the belly, giving you the best base weight option for these sleds with a lot of adjustability. (Weights come preset in all of our kits.) The RMK models are very sensitive to clutching, if they are too light on the clutching or get setup where they rev too fast, they will bog, or fall on their face consistently. They are more fun or more responsive with a lighter clutching setup though, so this can be a fine line- a guy who like to tinker and tune all the time will have fun with it, but our baseline setups are intended to be pull and go.  A good example is when trail riding at slow speeds and you pin the throttle and create a lot of track spin- this is an area that can be difficult to get through. Most guys never see the trail and won’t have to worry about it, but we know lots of guys like to drag race on the trail too.  Another very sensitive area is when you break traction while climbing and pull the track all the way out of the snow, and it just free wheels it will bog or sound like it dropped a cylinder. Our clutch set-ups have a lot of adjustability built into them and if you never trail ride, you can probably run a little less weight or helix and the sled will be snappier and even more responsive. 

Venting: The High Flow Intake Vent POL850T-HFI really helps the intake get even more fresh air, which helps the machines run more consistent and lowers the intake temps slightly. This also helps in deep snow conditions when the stock intake vents plug off your machine still has a good source of intake air.  This helps prevent bogging and runability issues when this situation occurs. We highly suggest 2022 RMK models update to the 2023 stock intake with the extra vent too. For Panel Vent kits there are 4 options for the RMK models. They help keep the temps down underhood, which leads to better performance, lower clutch and belt temps, and lower intake temps. See Related Products below for more details.

Pipe Springs:  For sure under higher boost settings, you need to double up the springs on the pipe to the y-pipe.  Even on models with a stock tune this will be a good upgrade- order quantity 3 of pn ATV-SS. Even with 1 PSI of extra boost we have seen the pipe push off the manifold and cause issues.

In the WERX: 

  • Stock Muffler Mod- for trail riders wanting to run Stage 2 or Stage 2.5 programming but have to run the stock muffler. 
  • Head Kits- These will be based off of a raw casting that will allow us to cut chambers to what we want or need and not be limited to recutting the stock heads.
  • Intercooler- We are working on a water to air intercooler kit similar to what we used on our Supercharger kits.  This will be huge for the mountain riding and high boost lake racing applications.
  • 900 Kit- There is replacement for displacement.

Sending us your ECU is always the easiest and preferred way to get it done, but for those that wish to purchase a tool to flash their own ECU, we are using the new industry leading EZ LYNK Auto Agent 3 system. This will not only allow you to flash your ECU but you can also do much more.

  • Data Log live and record data to share with tuners or friends.
  • Run diagnostics checks, read and clear codes on your machine as well as several other powersports and over the road vehicles. (brand-specific cables required for other powersports machines)
  • Exhaust Valve relearn on Polaris 650, 850, Boost, and 9r models.
  • Wastegate relearn on Polaris Boost models.
  • Flash your own ECU with optional ECU Flash Power-Up Adapter.
  • Change Maps on the Trail or Mountain with the cell phone app.


Get Connected with The World's Most Powerful Vehicle Scan Tool. EZ LYNK puts your technician in the front seat whenever and wherever you choose and is the vehicle interface for all EZ LYNK apps.

The EZ LYNK Auto Agent 3 Vehicle Diagnostic Scan Tool and Electronic Logging Device (ELD)

Who is it for?

Vehicle Owners - From 18 Wheelers to Powersports and everything in between. See what we offer for your Vehicle

Vehicle Technicians - Get Connected with your customer and their vehicles; Whenever and Wherever

Transport Companies - Owner Operator, Small and Large Fleet Sizes and even Bus Transport Companies

Commercial Motor Vehicle Drivers - Hotshot, Short Haul, Long Haul, Agricultural and Construction


60 Second Setup:

Plug the device into the Vehicle's OBDII Diagnostic Connector

Install the EZ LYNK Mobile App on your Android or iOS Device

Connect via WiFi

Diagnostic Scan Tool and More:


A Connected OBD Scan Tool for You and your Vehicle's Technician

Lynk with your Technician

View and Record Vehicle Data Parameters in Real Time

Share Recorded Data Logs with your Technician

Read and Clear Diagnostic Trouble Codes (DTC)

Perform Technician Recommended Vehicle Functions

Install Vehicle Firmware Updates provided by your Technician, Over-the-Air

Chat with your connected Technician, within the Auto Agent Mobile App


Auto Agent 3 w/ OBDII Connection

Devices and Software Compatibility:

Android 8.0 or Later

iOS 12.0 or Later



iPod touch


Additional Accessories to expand the Auto Agent 3 Connection and Convenience:

Class 8, Medium and Heavy Duty (Semi) vehicles - Auto Agent 3 HD Cables (6 and 9 Pin Round)

ATV, UTV, SnowMobile and WaterCraft applications - Auto Agent 3 Powersports Diagnostic Cables and ECU Flash Power-Up Adapters

EZ LYNK Phone Window or Dash Mount - The phone mount that sticks!

EZ LYNK ELD system requires a monthly subscription


Please Contact Pandemyk Performance to help Choose Kit Options