MBRP 3718-M299277-28 Performance Exhaust Khaos 155

( Brand: Mbrp ), ( Manufacturer Part Number: 3718-M299277-28 ), ( Part Type: Exhaust )

Review MBRP Series Performance Exhaust Polaris Khaos 155 fits TRAIL RMK 850 2020–2021

The **MBRP 3718-M299277-28 Trail Performance Exhaust** is a meticulously engineered aftermarket upgrade designed specifically for the 2020-2021 Polaris 850 RMK Khaos 155, delivering a harmonious blend of enhanced performance, refined sound, and uncompromising durability. Crafted from high-grade, heat-treated 304 stainless steel, this exhaust system is built to withstand the rigorous demands of off-road adventures while maintaining structural integrity under extreme conditions. The **dual-tip design** not only elevates the exhaust note to a deep, resonant growl that turns heads on the trail but also optimizes airflow for improved throttle response and power delivery, allowing the Khaos 155 to unleash its full potential with every twist of the wrist. The **smooth, contoured piping** minimizes turbulence, reducing backpressure and ensuring a more efficient exhaust pulse that translates directly into better engine breathing and a more aggressive powerband. This exhaust features a **universal mounting system** that seamlessly integrates with the stock frame rails, requiring minimal modification while providing a clean, factory-inspired aesthetic with its polished finish. Whether tackling technical singletrack, carving through rocky terrain, or hitting the top speed on a straightaway, the MBRP exhaust system enhances the Khaos 155 s already formidable capabilities, making every ride more exhilarating. Built to last, this exhaust is backed by MBRP s reputation for quality, ensuring riders can focus on pushing boundaries without worrying about premature wear or failure. Perfect for those seeking a balance between performance gains and a refined, trail-ready sound, this exhaust is an essential upgrade for any serious Khaos 155 enthusiast.

### **Pros and Cons of buying a MBRP 3718-M299277-28 Trail Performance Exhaust for the 2020-2021 Polaris 850 RMK Khaos 155**

1. **Improved Exhaust Flow and Horsepower** The Trail Performance exhaust is designed to enhance airflow, which can lead to better throttle response and slight power gains, especially in off-road conditions where stock exhausts may restrict performance.

2. **Lighter Weight** Compared to the stock exhaust, this aftermarket unit is typically lighter, which can reduce overall weight on the bike, improving handling and acceleration.

3. **Better Sound** The exhaust produces a deeper, more aggressive tone that many riders prefer over the stock muffled sound, adding to the sporty feel of the Khaos 155.

4. **Durability and Quality** MBRP (Motorcycle Builders Racing Products) is known for manufacturing high-quality exhaust systems with heat-treated materials, ensuring longevity and resistance to warping or cracking.

5. **Compatibility** This exhaust is specifically designed for the 2020-2021 Polaris 850 RMK Khaos 155, meaning it should fit without major modifications, reducing installation hassle.

6. **Easier Maintenance** The design often allows for easier access to the muffler for cleaning or replacement compared to some stock exhausts.

7. **Aesthetic Appeal** The aftermarket exhaust often has a more aggressive, custom look that enhances the bike s appearance, which is important for riders who value styling.

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1. **Cost** Aftermarket exhausts are typically more expensive than stock units, ranging significantly higher in price, which may not be justified if power gains are minimal.

2. **Potential Power Loss at Low RPM** While it improves high-RPM performance, some riders report that the exhaust can cause a slight drop in torque at lower RPMs, making the bike feel less responsive in certain situations.

3. **Noise Regulations** Depending on local laws, aftermarket exhausts may exceed legal noise limits, leading to potential fines or the need for additional sound-dampening modifications.

4. **Installation Complexity** While designed for compatibility, installing an aftermarket exhaust may still require some mechanical skill, especially if adjustments to mounting brackets or wiring harnesses are needed.

5. **Resale Value Impact** Modifying a bike with aftermarket parts can sometimes reduce its resale value, particularly if the market favors stock or less aggressive modifications.

6. **Potential for Rust or Corrosion** Some aftermarket exhausts, depending on material quality, may be more prone to rust or corrosion over time, especially in wet or off-road conditions.

7. **Limited Power Gains for Daily Riding** If you primarily use the bike for light trail riding rather than aggressive off-roading or racing, the power gains may not be noticeable enough to justify the cost.

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The MBRP 3718-M299277-28 Trail Performance exhaust is a solid choice for riders who prioritize improved exhaust flow, a deeper sound, and a lighter weight on their 2020-2021 Polaris 850 RMK Khaos 155. It offers noticeable benefits in performance and aesthetics, particularly for those who engage in off-road riding or seek a more aggressive bike setup. However, the cost and potential trade-offs in low-end torque or noise compliance should be carefully considered.

If you are looking for a **performance upgrade** and do not mind the higher cost, this exhaust is a worthwhile investment. If you are on a budget or primarily use the bike for light trail riding, the stock exhaust may suffice, and the power gains may not be significant enough to justify the expense.

- **Buy it if:** You want better exhaust flow, a more aggressive sound, and are willing to invest in a performance upgrade for off-road use. Ensure your local laws allow for the noise level.

- **Skip it if:** You prioritize cost efficiency, low-end torque, or plan to keep the bike stock for resale purposes. Consider alternative modifications like a cat-back exhaust or a less expensive performance muffler if you want some benefits without the full cost.

Details:

MBRP Trail Series Performance Exhaust for 2020 - 2021 Polaris 850 RMK KHAOS 155: 2 Year warranty, Improved throttle response, Quick and simple installation, Huge weight savings, Made from 304 stainless, Uses stock springs hangers, Dino proven performance, Flo-bench tested back pressure. Parts without fitment are to be assumed universal and may require vehicle modification.: Brand: MBRP, model Number: 3718-M299277-28. Compatibility: Years: Make: model: Application: Notes: 2019 - 2020 Polaris850 Switchback PRO-S, 2020 2021 Polaris850 RMK KHAOS 155 3in.

This is helpful if you are buying multiple items. I need to exchange an item. 2019 - 2020 Polaris850 Rush PRO-S, 2020 2022 Polaris850 INDY XCR, Switchback 2021 Polaris850 SKS 155, RMK KHAOS 2019 Polaris850 146.

part #: 3718m29927728 price

• $344.99

specifications exhaustsnowmobilee:

• for models: Rmk, 850, Trail
• for makes: Polaris
• for years: 2020-2021
• brand: Mbrp
• mpn: 3718-m299277-28
• part type: Exhaust

shipping exhaustsnowmobilee:

• transit: 3-6 Days
• class: Standard
• type: Fixed
• service: Standard
• cost: $0.00

offer exhaustsnowmobilee:

• availability: In Stock
• started: April 4, 2026
• sold: 0
• quantity: 9
• options: Ship-to-home

returns exhaustsnowmobilee:

• policy: Returns Accepted
• time: 30 Days
• paid by: Seller

seller exhaustsnowmobilee:

• # reviews: 81984
• rating: 99.9%
• city: Boise, ID

general exhaustsnowmobilee:

• condition: New
• Parts Accessories > Snowmobile Parts > Exhaust

payments exhaustsnowmobilee:

• wallet: Google-pay
• credit card: Discover
• other

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