STRAIGHTLINE PERFORMANCE 1138-S474117-58 Pipe Ski Doo

( Brand: Straightline Performance ), ( Manufacturer Part Number: 1138-S474117-58 ), ( Part Type: Pipe )

Review STRAIGHTLINE PERFORMANCE Y pipe Ski doo E tec fits MX 850 2017–2022

The **Straightline Performance 1138-S474117-58 Y-Pipe** is a meticulously engineered aftermarket exhaust system designed exclusively for the **2017 2022 Ski-Doo MX E-TEC 850**, delivering a perfect blend of performance, durability, and aesthetic appeal. Crafted from high-grade **409 stainless steel**, this Y-pipe is built to withstand the rigorous demands of off-road riding, ensuring long-lasting reliability even under the most extreme conditions. The **precision-machined design** optimizes exhaust flow, reducing backpressure and enhancing engine efficiency, which translates to improved throttle response, increased horsepower, and a more aggressive power delivery ideal for those seeking a competitive edge on the trail. The **smooth, polished finish** not only elevates the visual appeal of your Ski-Doo but also minimizes the risk of corrosion, making it a practical choice for riders who demand both performance and longevity. Installation is straightforward, thanks to the **direct-fit compatibility** with the factory exhaust system, allowing for a seamless upgrade without the need for additional modifications. Whether you're tackling rough terrain, pushing the limits in racing, or simply refining your ride for a more dynamic experience, this Y-pipe is a standout choice for enthusiasts who refuse to compromise on quality or performance.

### Pros and Cons of buying a Straightline Performance 1138-S474117-58 Y-Pipe for a 2017-2022 Ski-Doo MX E-TEC 850

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#### **Pros**

1. **Improved Exhaust Flow and Performance**

The Straightline Performance Y-pipe is designed to enhance exhaust flow, which can reduce backpressure and improve throttle response. This is particularly noticeable in the MX E-TEC 850, where stock exhaust systems can sometimes restrict airflow, especially under aggressive acceleration or at higher RPMs. A high-quality aftermarket Y-pipe can help mitigate this, leading to smoother power delivery and better overall performance.

2. **Durability and Quality Materials**

Straightline is known for using high-grade stainless steel in their exhaust components, which is more resistant to corrosion, heat, and wear compared to standard steel or galvanized exhausts. This means the Y-pipe is likely to last longer, even in harsh conditions or with frequent use. The build quality is generally robust, reducing the risk of premature failure.

3. **Compatibility with Stock and Modified Engines**

The 1138-S474117-58 model is specifically designed for the 2017-2022 Ski-Doo MX E-TEC 850, ensuring a proper fit without the need for extensive modifications. This compatibility extends to both stock and lightly modified engines, making it a versatile upgrade for riders who want to enhance performance without overhauling their setup.

4. **Aesthetic Appeal**

The Y-pipe adds a sportier, more aggressive look to the Ski-Doo, which can be appealing for riders who prioritize styling alongside performance. The polished or matte finish options (depending on the model) can complement the overall appearance of the vehicle.

5. **Potential for Increased Horsepower and Torque**

By reducing exhaust backpressure, the Y-pipe can allow the engine to breathe more efficiently, potentially leading to slight gains in horsepower and torque. While the gains may not be dramatic, they can be noticeable in terms of quicker acceleration, especially in the mid-range RPMs where the E-TEC 850 excels.

6. **Easier Installation**

Straightline Y-pipes are typically designed for straightforward installation, often requiring only basic tools. The kit usually includes all necessary hardware, such as clamps, gaskets, and mounting brackets, which simplifies the process for DIY enthusiasts.

7. **Compatibility with Other Straightline Exhaust Systems**

If you plan to upgrade to a full exhaust system later, the Straightline Y-pipe is often part of a larger lineup that can be easily integrated with other Straightline components. This modularity makes it a practical choice if you re considering future modifications.

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#### **Cons**

1. **Cost**

The Straightline Performance Y-pipe is not a cheap upgrade. Depending on where you purchase it (online retailers, dealerships, or specialty shops), the price can range significantly. For a part that primarily addresses exhaust flow, the cost may feel high compared to the performance gains, especially if you re not planning extensive modifications.

2. **Minimal Performance Gains for Stock Engines**

While the Y-pipe can improve exhaust flow, the gains in horsepower and torque may be modest for a stock MX E-TEC 850. If your engine is already well-tuned or if you re not pushing it aggressively, the difference may not be as noticeable as you d hope. Significant performance improvements typically require complementary upgrades, such as a high-flow air filter, tuned ECU, or exhaust headers.

3. **Noise Level**

A Y-pipe can make the exhaust sound louder and more aggressive, which may not be desirable for riders who prefer a quieter ride or operate in noise-restricted areas. Ski-Doos are already relatively loud, and some riders may find the added noise from a Y-pipe intrusive or off-putting.

4. **Potential for Increased Heat**

While stainless steel is durable, the Y-pipe can generate more heat due to improved exhaust flow. This heat can affect surrounding components, such as the catalytic converter (if equipped) or the muffler, and may require additional cooling solutions if you re running other high-performance exhaust parts.

5. **Weight Considerations**

Stainless steel is heavier than some alternative materials, such as titanium or aluminum. While the difference is often negligible, the added weight of the Y-pipe could slightly impact handling, especially in high-performance or aggressive riding scenarios.

6. **Installation Complexity**

Although Straightline Y-pipes are generally easy to install, some riders may encounter challenges if they lack mechanical experience. Improper installation such as incorrect clamping or sealing can lead to leaks, reduced performance, or even damage to the exhaust system. It s important to follow the installation instructions carefully or seek professional help if needed.

7. **Limited Customization Options**

Straightline offers a range of Y-pipes, but the customization options for this specific model may be limited. You may not have the ability to adjust the diameter, material, or other performance-enhancing features without purchasing additional parts or upgrading to a different system.

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#### **Ending Conclusion**

The Straightline Performance 1138-S474117-58 Y-pipe is a solid upgrade for the 2017-2022 Ski-Doo MX E-TEC 850, offering tangible benefits in terms of exhaust flow, durability, and aesthetics. It is particularly well-suited for riders who want to enhance their vehicle s performance subtly without committing to a full exhaust system. The gains in throttle response and power delivery can be noticeable, especially in aggressive riding conditions, and the high-quality materials ensure longevity.

However, the cost of the Y-pipe may not justify the modest performance improvements for riders who are primarily interested in maintaining stock performance or who operate in noise-sensitive areas. Additionally, the benefits are more pronounced when paired with other modifications, such as a high-flow air filter or tuned ECU. If you re already planning to upgrade other components or if you prioritize a sportier look and feel, the Straightline Y-pipe is a worthwhile investment. For those who are content with stock performance or on a tighter budget, the gains may not be worth the expense.

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#### **Recommendation**

- You want to improve exhaust flow and throttle response in your MX E-TEC 850 without a full exhaust swap.

- You prioritize durability and high-quality materials for your exhaust system.

- You re planning to pair it with other performance upgrades (e.g., air filter, headers, or a tuned ECU) to maximize gains.

- You appreciate the aesthetic benefits and want a more aggressive look.

- You re comfortable with the added noise and are not operating in noise-restricted areas.

- You re primarily interested in maintaining stock performance and don t want to spend extra money on minor upgrades.

- You operate in areas with strict noise regulations and are sensitive to increased exhaust noise.

- You re on a tight budget and cannot justify the cost relative to the expected performance gains.

- You plan to keep the bike stock and don t intend to pursue further modifications.

- You prefer lighter materials (e.g., titanium) and are concerned about the added weight of stainless steel.

- **Stock Y-Pipe Replacement:** If the stock Y-pipe is damaged or leaking, replacing it with a new OEM part may be a cost-effective solution without sacrificing performance.

- **Budget-Friendly Aftermarket Y-Pipes:** Brands like **B&M, Walker, or DynoMax** offer more affordable Y-pipes that may provide similar benefits at a lower cost.

- **Full Exhaust System:** If you re committed to performance upgrades, investing in a full exhaust system (e.g., from Straightline, Walker, or DynoMax) may yield more significant gains and justify the higher cost.

Ultimately, the Straightline Performance Y-pipe is a strong choice for riders who want a reliable, high-quality upgrade that enhances both performance and appearance. Weigh the pros and cons against your specific needs and budget to determine if it s the right fit for your Ski-Doo.

Details:

Straightline Performance Y-Pipe for 2017 - 2022 Ski-Doo MX Z X E-TEC 850: Are a direct bolt-on. No jetting modifications needed with just a Y-pipe. 2017 - 2022 Ski-Doo MX Z TNT E-TEC 850. This is helpful if you are buying multiple items.

Brand: Straightline Performance, model Number: 1138-S474117-58. Parts without fitment are to be assumed universal and may require vehicle modification. I need to exchange an item. Increase of 2-10 horsepower depending on Y-pipe application.

Available in ceramic or black high-temperature paint.

part #: 1138s47411758 price

• $254.65

specifications exhaustsnowmobilee:

• for models: Mx, 850
• for makes: Ski-doo
• for years: 2017-2022
• brand: Straightline Performance
• mpn: 1138-s474117-58
• part type: Pipe

returns exhaustsnowmobilee:

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

seller exhaustsnowmobilee:

• city: Boise, ID
• rating: 99.9%
• # reviews: 82982

shipping exhaustsnowmobilee:

• cost: $0.00
• type: Fixed
• service: Standard
• transit: 3-8 Days
• class: Standard

offer exhaustsnowmobilee:

• options: Ship-to-home
• availability: In Stock
• started: April 15, 2026
• sold: 0
• quantity: 2

payments exhaustsnowmobilee:

• credit card: Diners-club
• other
• wallet: Apple-pay

general exhaustsnowmobilee:

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

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