2014-19 Polaris Slingshot MRT Stinger Extreme

2014 - 19 Polaris Slingshot MRT Stinger Extreme Performance Exhaust System 91U121
MRT 304 Stainless Side-Exit: 2014-2020 Polaris Slingshot #91U121
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MRT Part# 91U121 Loudness: 9 Drone: 2.5 Performance: 9

Application: 2014 - 2019 2.4L Polaris Slingshot
Tune: None Required
Time to Install: 60 Minutes
Retail Price: $563.99
Your Price: $469.99

Availability: Usually Ships in 1 to 2 Business Days

Product Details Technical Specs Installation Instructions
The MRT Stinger system has a loud, deep muscle sound and is handcrafted in corrosion-resistant T304 Stainless Steel. This system includes a 2.5" mandrel-bent tube. It is engineered with the best sound to match your Slingshot and provides increased performance from the increased exhaust flow. The Stinger has a simple design and bolts directly to your manifold. This system is designed with an INCREASE in sound for a definite Hear the Difference and Get Noticed exhaust presence.

If you prefer a more comfortable ride for your passenger, check out our side exit Scorpion exhaust #91U120.

Application: 2014 thru 2019 2.4L Polaris Slingshot.

Hear the Difference
  • How does it sound? The MRT Stinger #91U121 has a loud, deep muscle sound.
  • Is there drone or resonance? The drone is noticeable but tolerable.
  • What if I step on it? Wide-open throttle increases exhaust loudness and tone to an aggressive performance sound.
Are you located close to Plymouth, MI, and need your MRT aftermarket exhaust installed? Call MRT at 734-455-5807 to make an appointment today!

  • DIY installation for the backyard mechanic
  • T304 Stainless Steel for the best corrosion resistance
  • Engineered, designed and manufactured in the USA

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2014-19 Polaris Slingshot MRT Scorpion Extreme Side Exit
Your Price: $599.99
MRT Scorpion Extreme Performance Exhaust System #91U120 (2014 - 19 Polaris Slingshot)

Average Rating: Average Rating: 5 of 5 5 of 5 Total Reviews: 3 Write a review »

5 of 5 Beast of a Sound March 13, 2024
Reviewed by: Hector from Texas  
This exhaused is amazing. Deep, Loud sound! They should definitely have better installation instructions. The hardest part was removing the side panels to be able to access the original exhaust and then removing it. Install of the MRT was pretty simple. You will get noticed, neighbors will hate you. It's a beauty of an exhaust!

5 of 5 Best Value / Excellent Sound August 27, 2020
Reviewed by: Sam S from Charleston, SC  
I did a lot of research on what I wanted on my Slingshot for an updated exhaust.  I was also trying to find one that I was comfortable with for my budget.  I have to say when I landed on your website and saw the video you posted...I was impressed.  Of course everyone has there own say on what sounds good to them.  I had a lot of friends who were just as eager to hear the difference.  You know the one who goes first in your group of friends the rest tend to follow with the same interest.  Everyone was equally impressed when they heard the exhaust installed.  Easy install...the 2 page document could be a little better in details but other than that....I would absolutely recommend this product...I purchased the Stinger

5 of 5 10/10 ! June 17, 2020
Reviewed by: Chris from Detroit, Michigan  
This exhaust system will make your Slingshot LOUD! Which is exactly what I wanted! I have had my exhaust for a little over a year now. MRT installed it for me at their shop and I have had no issues. People notice the sound everywhere I go-  so just know you WILL get noticed.

If you have a Polaris Slingshot, you need to pair it with an MRT exhaust system - period!