SKINZ PROTECTIVE GEAR MN-9BY9 Hush Boxx Silencer Ski Doo Tec MN/9BY9 800R

( Brand: Skinz Protective Gear ), ( Manufacturer Part Number: MN/9BY9 ), ( Compatible Year: 2017 2016 2015 2014 2013 2012 2011 ), ( Compatible Model: Mx Z X-rs E-tec 800r ), ( Bundle Description: 1 Pc Genuine Skinz Hush Boxx 88 Silencer ), ( Type: Hush Boxx 88 Silencer ), ( Core Charge: Free No Core Charge ), ( Fitment Type: Direct Replacement )

Review SKINZ PROTECTIVE GEAR Mn/9by9 Hush Box Silencer Ski doo X rs E tec fits MX RS SS 2011–2017

The **Skinz Gear MN/9by9 Hush Boxx Silencer** is a meticulously engineered aftermarket exhaust system designed specifically for the **2011 2017 Ski-Doo MX X-RS E-TEC 800R**, offering a perfect blend of performance, style, and noise reduction. Crafted from high-quality **304 stainless steel**, this silencer is built to withstand the demands of off-road riding while delivering a refined, aggressive exhaust note that enhances the already potent sound of your Ski-Doo. The **Hush Boxx** technology integrates a **multi-chambered design** with precision-drilled ports and a **tapered exhaust flow path**, ensuring optimal backpressure for improved throttle response and power delivery. Unlike generic aftermarket silencers, this unit is **OEM-compatible**, meaning it seamlessly integrates with your factory exhaust system, eliminating the need for extensive modifications or compromises in fitment. The **sleek, matte black finish** not only complements the aggressive aesthetic of the MX X-RS but also resists corrosion, ensuring longevity even in harsh off-road conditions. Whether you're carving through deep snow, tackling rocky trails, or cruising on open terrain, the **Hush Boxx Silencer** reduces noise levels significantly while maintaining a deep, resonant tone that turns heads. Backed by **Skinz Gear s reputation for quality and durability**, this silencer is more than just an accessory it s a performance upgrade that transforms your Ski-Doo into a quieter, more refined machine without sacrificing power or style. Perfect for riders who demand both performance and discretion, the **Hush Boxx Silencer** is an essential addition for any MX X-RS owner looking to refine their ride.

### **Pros and Cons of Buying a Skinz Gear MN/9by9 Hush Boxx Silencer for a 2011 2017 Ski-Doo MX X-RS E-TEC 800R**

1. **Significant Noise Reduction** The Hush Boxx is designed to lower exhaust noise by a noticeable margin, making the Ski-Doo quieter in residential or noise-restricted areas. This can help avoid fines in some regions where off-road vehicles are subject to noise regulations.

2. **Improved Sound Quality** Unlike stock exhausts that produce a harsh, piercing tone, the Hush Boxx delivers a deeper, more controlled exhaust note, which some riders find more pleasant, especially at lower RPMs.

3. **Compatibility with E-TEC 800R** The system is specifically engineered for the 2011 2017 Ski-Doo MX X-RS E-TEC 800R, ensuring a proper fit without major modifications. The 9by9 and Skinz Gear versions are both well-regarded for this model.

4. **Durability and Build Quality** Both brands use high-quality materials, including stainless steel components, which resist corrosion and withstand the rigors of off-roading. The Hush Boxx is designed to handle the power output of the E-TEC engine without excessive backpressure issues.

5. **Legal Compliance in Some Areas** In regions where off-road vehicles are subject to noise ordinances, a silencer like this can help meet legal requirements without requiring a full muffler swap (though check local laws, as some places still prohibit aftermarket silencers).

6. **Minimal Tuning Required** Unlike some exhaust systems that require a tune or carburetor adjustments, the Hush Boxx is designed to integrate smoothly with the stock E-TEC setup, reducing the need for additional modifications.

7. **Aesthetic Appeal** The Hush Boxx has a sleek, modern look that complements the aggressive styling of the Ski-Doo MX X-RS, offering a cleaner exhaust appearance compared to stock setups.

8. **Positive Community Feedback** Many riders report improved ride comfort due to reduced vibration and a more refined exhaust tone, which can enhance the overall driving experience.

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1. **Potential Backpressure Concerns** While the Hush Boxx is designed to minimize backpressure, some riders report a slight reduction in throttle response, especially in aggressive acceleration scenarios. This is more noticeable in high-performance setups but is generally mild in stock or lightly modified E-TEC engines.

2. **Cost** The Hush Boxx is not a cheap modification. Pricing for a complete kit (including mounting hardware, gaskets, and sometimes a catalytic converter bypass if required) can range from **$500 to $800**, depending on whether you choose the 9by9 or Skinz Gear version. This is a significant investment for a purely noise-reduction upgrade.

3. **Installation Complexity** Installing the Hush Boxx requires removing the stock exhaust system, which involves heat shielding, mounting brackets, and sealing. While not extremely difficult, it does require mechanical skill, patience, and possibly professional help if you re unfamiliar with exhaust work. Improper installation can lead to leaks or performance issues.

4. **Possible Warranty Voiding** Ski-Doo s factory warranty may be voided if the exhaust system is modified, especially if the modification affects emissions or structural integrity. This is a risk to consider if you plan to keep the vehicle long-term.

5. **Limited Performance Gain** Unlike a high-flow exhaust, the Hush Boxx does not improve horsepower or torque. Its primary benefit is noise reduction, so riders looking for a performance boost should pair it with other modifications.

6. **Resale Value Impact** Aftermarket silencers can deter some buyers, as they may prefer stock or more common exhaust systems. If you plan to sell the Ski-Doo later, the Hush Boxx might not appeal to everyone.

7. **Regulatory Uncertainty** While the Hush Boxx helps with noise, some areas still prohibit aftermarket silencers entirely, or they may require additional modifications (e.g., a catalytic converter bypass) to comply with emissions laws. Always verify local regulations before purchasing.

8. **Potential for Exhaust Leaks** Like any exhaust system, the Hush Boxx can develop leaks over time, especially if not properly maintained. Gaskets and bolts may need periodic checks to prevent exhaust fumes from entering the cabin.

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### **Conclusion and Recommendation**

The **Skinz Gear MN/9by9 Hush Boxx silencer is a worthwhile upgrade for the 2011 2017 Ski-Doo MX X-RS E-TEC 800R** if your primary goal is **reducing noise without sacrificing performance**. It offers a significant improvement in exhaust tone and ride comfort while maintaining compatibility with the stock engine. However, it is not a cheap or simple modification, and it may not be necessary if you primarily ride in unrestricted areas or don t mind the stock exhaust s louder character.

- **Buy if:** You frequently ride in noise-sensitive areas, want a quieter exhaust tone, and are willing to invest in a high-quality, durable system. The 9by9 version is often praised for its precision engineering, while Skinz Gear offers a slightly more budget-friendly option with similar results.

- **Skip if:** You prioritize performance over noise, are on a tight budget, or plan to sell the Ski-Doo soon (as resale appeal may be reduced). Alternatively, consider a **stock exhaust with a sound-deadening wrap** or a **less expensive aftermarket muffler** if noise is a concern but you want to avoid the Hush Boxx s cost.

For the best results, **install the system properly** and **monitor for leaks or backpressure issues** during the first few rides. If you re unsure about installation, consult a professional mechanic familiar with Ski-Doo exhaust systems.

Details:

Skinz Hush Box 88 Silencer for 2011 - 2017 Ski-Doo MX Z X-RS E-TEC 800R - Ss: Status: In Stock.

part #: mn9by9 prices

• $79.49-$349.95

specifications exhaustsnowmobilee:

• for models: Mx, Rs, Ss
• for makes: Ski-doo
• for years: 2011-2017
• brand: Skinz Protective Gear
• mpn: Mn/9by9
• compatible year: 2017 2016 2015 2014 2013 2012 2011
• compatible model: Mx Z X-rs E-tec 800r
• bundle description: 1 Pc Genuine Skinz Hush Boxx 88 Silencer
• type: Hush Boxx 88 Silencer
• core charge: Free No Core Charge
• fitment type: Direct Replacement

seller exhaustsnowmobilee:

• city: Multiple warehouses
• rating: 98.7%
• # reviews: 17284

returns exhaustsnowmobilee:

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

payments exhaustsnowmobilee:

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

offer exhaustsnowmobilee:

• availability: In Stock
• options: Ship-to-home
• sold: 0
• quantity: 1
• started: February 9, 2026

shipping exhaustsnowmobilee:

• class: Standard
• transit: 2-5 Days
• type: Fixed
• service: Standard
• cost: $0.00

general exhaustsnowmobilee:

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

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