STARTING LINE PRODUCTS 2487-S746815-57 Slp Exhaust Flange Seal Grafoil Pipe

( Brand: Starting Line Products ), ( Manufacturer Part Number: 2487-S746815-57 ), ( Part Type: Seal Pipe Exhaust Flange )

Review STARTING LINE PRODUCTS Slp Exhaust Flange Grafoil Seal twin Pipe Polaris fits TWIN XCR 800 1999–2003

The **Starting Line 2487-S746815-57 SLP Exhaust Flange Grafoil Seal for Twin-Pipe Applications** is a precision-engineered aftermarket component designed specifically to enhance performance, durability, and reliability for the **1999 2003 Polaris 800 XCR** off-road motorcycle. This high-quality exhaust flange features a **Grafoil seal**, a proprietary material known for its superior heat resistance, flexibility, and longevity, ensuring a tight, leak-free fit that maintains optimal exhaust flow while preventing carbon buildup and premature wear. Crafted from durable, heat-treated steel, the flange is built to withstand the intense thermal cycling and mechanical stress of aggressive riding, making it an ideal upgrade for riders seeking both performance gains and long-term dependability. The **twin-pipe configuration** ensures balanced exhaust scavenging, reducing backpressure and improving throttle response, which translates to smoother power delivery and enhanced engine efficiency. Whether you're tackling rough terrain or pushing the limits on the track, this flange integrates seamlessly with the stock exhaust system or aftermarket headers, providing a straightforward yet high-performance solution. Its **universal compatibility** with the specified Polaris models ensures a hassle-free installation, while its robust construction minimizes the risk of leaks or failures, even under extreme conditions. For riders who demand precision, durability, and a noticeable improvement in exhaust performance, the Starting Line SLP Exhaust Flange Grafoil Seal is an essential component to elevate both the power output and reliability of the 800 XCR.

### **Pros and Cons of buying a Starting Line 2487-S746815-57 SLP Exhaust Flange with Grafoil Seal for a 1999-2003 Polaris 800 XCR**

1. **Compatibility** This exhaust flange is specifically designed for the 1999-2003 Polaris 800 XCR, ensuring a proper fit without modifications. The SLP (Single-Layer Pipe) design is common for this generation of XCRs, making it a straightforward upgrade or replacement part.

2. **Grafoil Seal Included** The inclusion of a Grafoil gasket ensures a reliable seal between the exhaust flange and the engine or exhaust system. Grafoil is durable, heat-resistant, and prevents leaks, which is crucial for maintaining engine efficiency and reducing exhaust noise.

3. **SLP Exhaust System Compatibility** If you're running a single-layer pipe exhaust system (common for performance or aesthetic reasons), this flange will integrate seamlessly. It s a key component for maintaining proper exhaust flow and reducing backpressure.

4. **Performance Potential** A well-fitted exhaust flange can improve exhaust flow, especially if the original flange was worn or restrictive. This may contribute to slight power gains and better throttle response, though the impact depends on other system components.

5. **Durability** Starting Line parts are generally built to last, with high-quality materials that can withstand the heat and stress of a high-performance ATV exhaust system. The flange itself is likely stamped steel, which is robust for this application.

6. **Easy Installation** Since it s a direct-fit part, installation should be relatively straightforward for someone with basic mechanical skills. No extensive modifications or welding are typically required, assuming the engine and exhaust system are compatible.

7. **Cost-Effective Upgrade** Compared to full exhaust systems, this flange is an affordable way to address specific issues (e.g., leaks, noise, or performance) without a major investment.

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1. **Potential for Mismatch with Aftermarket Exhausts** While this flange fits stock and SLP systems, if you re running a custom or aftermarket exhaust (e.g., dual-slip, high-flow, or non-SLP), compatibility may be an issue. Always verify that the flange matches the diameter and threading of your exhaust system.

2. **Wear and Tear Over Time** Like any exhaust component, the flange and gasket can degrade due to heat, vibration, or corrosion. Grafoil seals may need replacement if they harden or crack, especially if the ATV is ridden aggressively or in harsh conditions.

3. **Limited Performance Gains Alone** Replacing just the flange won t drastically improve performance unless the rest of the exhaust system is optimized. For meaningful power increases, consider pairing it with a high-flow muffler or catalytic converter (if applicable).

4. **Quality Variability** While Starting Line is a reputable brand, there have been occasional reports of inconsistent quality in aftermarket parts. Always inspect the flange for defects (e.g., warping, rough edges) upon receipt and before installation.

5. **Installation Challenges** If the original flange was corroded or damaged, removing it could be difficult. In some cases, cutting or grinding may be necessary, which requires caution to avoid damaging the exhaust or engine components.

6. **Noise Considerations** While this flange itself won t significantly alter exhaust noise, pairing it with a restrictive muffler could lead to louder operation. If noise reduction is a priority, ensure the rest of the exhaust system is balanced.

7. **Limited Warranty or Return Options** Like many aftermarket parts, this flange may not come with a long warranty, and returns could be restricted if it doesn t fit or function as expected. Always check the seller s return policy before purchasing.

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The **Starting Line 2487-S746815-57 SLP Exhaust Flange with Grafoil Seal** is a **solid, direct-fit option** for the 1999-2003 Polaris 800 XCR, particularly if you're maintaining or upgrading a stock or SLP exhaust system. It addresses common issues like leaks and ensures a secure connection, while also offering potential performance benefits if the rest of the exhaust is optimized. However, it s not a "one-size-fits-all" solution compatibility with aftermarket exhausts must be verified, and it s just one component in a larger system.

If your primary goals are **reliability, ease of installation, and a cost-effective upgrade**, this flange is a **good choice**. If you re pursuing **maximum performance or noise reduction**, you may need to pair it with additional modifications (e.g., a high-flow muffler or slip-on exhaust).

- You re replacing a worn or leaking flange in a stock or SLP exhaust system.

- You ve confirmed compatibility with your current exhaust setup.

- You re open to minor performance improvements without a full exhaust overhaul.

- You re comfortable with basic installation (or have access to a mechanic).

- You re running a non-SLP or custom exhaust system (check for matching diameters/threading).

- You want significant noise reduction or power gains (a full exhaust system may be better).

- You suspect the original flange was damaged beyond repair, and you re unsure about installation difficulty.

**Final Verdict:** This is a **practical and reasonably priced part** for the specified Polaris XCR models, but it s best suited for those who want a targeted upgrade rather than a complete exhaust rebuild. Always inspect the part upon arrival and ensure it matches your exhaust system s requirements.

Details:

Brand: Starting Line Products, model Number: 2487-S746815-57. SLP Exhaust Flange Grafoil Seal-Twin Pipe for 1999 - 2003 Polaris 800 XCR: For Systems. This is helpful if you are buying multiple items. 2002 - 2003 Arctic Cat ZL 800 EFI ESR.

I need to exchange an item. Parts without fitment are to be assumed universal and may require vehicle modification.

part #: 2487s74681557 price

• $57.87

specifications exhaustsnowmobilee:

• for models: Xcr, 800, Twin
• for makes: Polaris
• for years: 1999-2003
• brand: Starting Line Products
• mpn: 2487-s746815-57
• part type: Seal Pipe Exhaust Flange

seller exhaustsnowmobilee:

• city: Boise, ID
• # reviews: 85417
• rating: 99.9%

offer exhaustsnowmobilee:

• availability: In Stock
• sold: 0
• quantity: 9
• started: May 17, 2026
• options: Ship-to-home

general exhaustsnowmobilee:

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

payments exhaustsnowmobilee:

• credit card: Mastercard
• other
• wallet: Paypal

shipping exhaustsnowmobilee:

• cost: $0.00
• class: Standard
• transit: 4-6 Days
• type: Fixed
• service: Standard

returns exhaustsnowmobilee:

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

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