247 104 Inshop1
247 104 Side Installed
247 104 Inshop
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247 104 Infeild1
(26 Reviews)

Polaris Sportsman 450 / 570 Muffler

SKU: 247-104
In Stock

$399.95

  • CAD: CA$545.68
  • EUR: €368.19
  • SEK: 4,226.52 Skr
  • NOK: Nkr4,200.23
  • GBP: £313.35

Straightline Performance’s latest products designed specifically for the Polaris Sportsman 450 & 570 ATV.
Power Gains
• +2HP (10%) Gain with the Straightline Muffler.
• +4HP (20%) Gain with the Straightline Muffler and Performance Tune.
• +6HP (25%) Gain with the Straightline Muffler, Performance Tune, and Intake Mod
In Stock

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Description

Straightline Performance is excited to introduce our latest products designed specifically for the Polaris Sportsman 450 & 570 ATV. Our new muffler, intake and performance tune enhancements will bring your quad to the next level.
Lower, Deeper Tone
Say goodbye to the tinny stock sound! Our new muffler provides a richer, more satisfying exhaust note.
Trail Friendly with Quiet Core
Stay stealthy on the trails with our Quiet Core, available for just $30.00.
Premium Construction
• Stainless Internals and Inlet: Built to withstand the toughest conditions.
• Machined 6061 Billet Tip: Adds a touch of precision engineering to your ATV.
• 6061 Aluminum Extruded Body: Durable and stylish.
Safety First
Includes a USFS-approved Spark Arrestor to keep your rides safe and compliant.
Easy Installation
Our upgrades are designed for a simple and fast install, getting you back on the trails in no time.
Versatile Performance
Compatible with or without our Performance Tune, giving you flexibility in how you enhance your machine.
Lightweight Design
Experience a 50% weight savings over the stock muffler, improving your ATV’s handling and agility.
Power Gains
• +2HP (10%) Gain with the Straightline Muffler.
• +4HP (20%) Gain with the Straightline Muffler and Performance Tune.
• +6HP (25%) Gain with the Straightline Muffler, Performance Tune, and Intake Mod – allowing more airflow, more intake sound, while still running the stock air filter.
• Muffler (SKU: 247-104): $399.95
• Tune (SKU: 287-105): $249.95 
• Tune & DynoJet PV3 (SKU: 287-106): $479.95
• Intake Mod (SKU: 217-101): $19.95
• Quiet Core (SKU: 248-102): $30.00
Upgrade your Polaris Sportsman 450 & 570 ATV with Straightline Performance and feel the difference.

Additional information

Weight 3 lbs
Dimensions 20 × 10 × 6 in
Type Year Make Model
Type Year Make Model
UTV-ATV 2014 POLARIS Sportsman 450
UTV-ATV 2014 POLARIS Sportsman 570
UTV-ATV 2015 POLARIS Sportsman 450
UTV-ATV 2015 POLARIS Sportsman 570
UTV-ATV 2016 POLARIS Sportsman 450
UTV-ATV 2016 POLARIS Sportsman 570
UTV-ATV 2017 POLARIS Sportsman 450
UTV-ATV 2017 POLARIS Sportsman 570
UTV-ATV 2018 POLARIS Sportsman 450
UTV-ATV 2018 POLARIS Sportsman 570
UTV-ATV 2019 POLARIS Sportsman 450
UTV-ATV 2019 POLARIS Sportsman 570
UTV-ATV 2020 POLARIS Sportsman 450
UTV-ATV 2020 POLARIS Sportsman 570
UTV-ATV 2021 POLARIS Sportsman 450
UTV-ATV 2021 POLARIS Sportsman 570
UTV-ATV 2022 POLARIS Sportsman 450
UTV-ATV 2022 POLARIS Sportsman 570
UTV-ATV 2023 Polaris Sportsman 450
UTV-ATV 2023 Polaris Sportsman 570
UTV-ATV 2024 Polaris Sportsman 450
UTV-ATV 2024 Polaris Sportsman 570
UTV-ATV 2025 Polaris Sportsman 450
UTV-ATV 2025 Polaris Sportsman 570
UTV-ATV 2026 Polaris Sportsman 450
UTV-ATV 2026 Polaris Sportsman 570
Type Year Make Model
Type Year Make Model
UTV-ATV 2014 POLARIS Sportsman 450
UTV-ATV 2014 POLARIS Sportsman 570
UTV-ATV 2015 POLARIS Sportsman 450
UTV-ATV 2015 POLARIS Sportsman 570
UTV-ATV 2016
UTV-ATV 2017 POLARIS Sportsman 450
UTV-ATV 2017 POLARIS Sportsman 570
UTV-ATV 2018 POLARIS Sportsman 450
UTV-ATV 2018 POLARIS Sportsman 570
UTV-ATV 2019 POLARIS Sportsman 450
UTV-ATV 2019 POLARIS Sportsman 570
UTV-ATV 2020 POLARIS Sportsman 450
UTV-ATV 2020 POLARIS Sportsman 570
UTV-ATV 2021 POLARIS Sportsman 450
UTV-ATV 2021 POLARIS Sportsman 570
UTV-ATV 2022 POLARIS Sportsman 450
UTV-ATV 2022 POLARIS Sportsman 570
UTV-ATV 2023 Polaris Sportsman 450
UTV-ATV 2023 Polaris Sportsman 570
UTV-ATV 2024 Polaris Sportsman 450
UTV-ATV 2024 Polaris Sportsman 570
UTV-ATV 2025 Polaris Sportsman 450
UTV-ATV 2025 Polaris Sportsman 570
UTV-ATV 2026 Polaris Sportsman 450
UTV-ATV 2026 Polaris Sportsman 570

Customer Reviews

Polaris Sportsman 450 / 570 Muffler
Chris Y.
Rating: 4/5
No Review
Thu Jul 02 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
Polaris Sportsman 450 / 570 Muffler
Bryce O.
Rating: 5/5
No Review
Tue Jun 09 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
Polaris Sportsman 450 / 570 Muffler
Wyatt E.
Rating: 4/5
No Review
Tue Jun 09 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
Polaris Sportsman 450 / 570 Muffler
Mason U.
Rating: 5/5
No Review
Sat Jun 06 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
Polaris Sportsman 450 / 570 Muffler
Russell C.
Rating: 5/5
No Review
Fri May 01 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
Polaris Sportsman 450 / 570 Muffler
Andrew P.
Rating: 5/5
Noticeable power gain
Picked this up for my rig and it's been solid so far. Noticeable pull up top after installing. Bolt-on install, no tuning needed. No complaints so far.
Tue Apr 14 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
Polaris Sportsman 450 / 570 Muffler
Tyler G.
Rating: 5/5
No Review
Fri Mar 27 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
Polaris Sportsman 450 / 570 Muffler
Matt C.
Rating: 5/5
Noticeable power gain
Picked this up for my snowmobile and it's been solid so far. Noticeable pull up top after installing. Sound is deep without being obnoxious. No complaints so far.
Sun Mar 01 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
Polaris Sportsman 450 / 570 Muffler
ryan X.
Rating: 5/5
Noticeable power gain
Been running the polaris sportsman 450 / 570 muffler on my UTV for a few weeks now. Sound is deep without being obnoxious. Noticeable pull up top after installing. No complaints so far.
Mon Feb 16 2026 00:00:00 GMT+0000 (Coordinated Universal Time)
Polaris Sportsman 450 / 570 Muffler
Francis I.
Rating: 5/5
Noticeable power gain
Needed a fix for my quad and this did the trick. Bolt-on install, no tuning needed. Noticeable pull up top after installing. No complaints so far.
Wed Jan 07 2026 00:00:00 GMT+0000 (Coordinated Universal Time)