STARTING LINE PRODUCTS 1773-S745387-63 Slp Exhaust Flange Seal Grafoil Pipe Cat

( Brand: Starting Line Products ), ( Manufacturer Part Number: 1773-S745387-63 ), ( Part Type: Seal Pipe Exhaust Flange )

Review STARTING LINE PRODUCTS Slp Exhaust Flange Grafoil Seal twin Pipe Arctic Cat fits TWIN ZR 800 2001–2002

The **Starting Line 1773-S745387-63 SLP Exhaust Flange Grafoil Seal for Twin-Pipe Applications** is a precision-engineered aftermarket component designed to deliver a seamless and high-performance fit for the **2001-2002 Arctic Cat ZR 800** outboard motor. Crafted from **high-temperature Grafoil gasket material**, this exhaust flange seal ensures an airtight, vibration-resistant barrier between the factory exhaust manifold and the aftermarket exhaust system, preventing leaks that could compromise engine efficiency, power output, or even cause overheating. The **SLP (Super Low Profile) design** minimizes bulk while maintaining structural integrity, allowing for a clean, professional installation that preserves the stock appearance of the motor s exhaust housing. Built to withstand the extreme heat and pressure generated by the ZR 800 s high-performance twin-cylinder engine, this seal is resistant to warping, cracking, or degradation over time, ensuring long-term reliability even under demanding conditions. Whether upgrading to a performance exhaust system for improved exhaust flow, reduced backpressure, or enhanced sound modulation, this flange seal guarantees a secure, leak-free connection that maintains factory specifications while accommodating aftermarket modifications. Ideal for enthusiasts and mechanics seeking a durable, easy-to-install solution, this component bridges the gap between stock and upgraded exhaust setups with precision and confidence.

The **Starting Line 1773-S745387-63 SLP Exhaust Flange with Grafoil Seal** is designed for the **2001-2002 Arctic Cat ZR 800**, a popular off-road snowmobile. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **OEM Fitment and Compatibility**

The flange is engineered to match the factory exhaust system of the 2001-2002 ZR 800, ensuring a proper fit without modifications. This reduces the risk of leaks or improper alignment, which can lead to exhaust issues or damage.

2. **High-Quality Grafoil Seal**

Grafoil is a durable, heat-resistant sealing material that provides a tight, long-lasting seal between the exhaust flange and the muffler or downpipe. It resists warping, cracking, and degradation better than some cheaper alternatives, improving reliability in cold or fluctuating temperatures.

3. **Durability and Strength**

The flange appears to be constructed from stamped steel or a similar robust material, designed to withstand the stresses of off-road use, including vibrations, impacts, and thermal cycling. This can extend the lifespan of the exhaust system compared to weaker aftermarket alternatives.

4. **Easy Installation**

Starting Line parts are known for straightforward installation processes. The flange likely includes clear instructions and may require minimal tools, making it accessible for DIYers without extensive mechanical experience.

5. **Compatibility with SLP Exhaust Systems**

If you re running a **Starting Line Performance (SLP) exhaust system**, this flange is specifically designed to integrate seamlessly with their aftermarket components. This ensures optimal flow and performance without compatibility issues.

6. **Rust Resistance**

The flange may feature a powder-coated or galvanized finish, which helps protect against corrosion a critical factor for snowmobiles exposed to moisture, salt, and harsh winter conditions.

7. **Support for Performance Upgrades**

If you re upgrading to a higher-flow exhaust system (e.g., SLP s performance mufflers or downpipes), this flange helps maintain structural integrity while supporting improved exhaust flow.

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### **Cons**

1. **Limited Availability and Lead Times**

Starting Line parts, especially those with specific OEM-style designs, may not be as widely stocked as generic aftermarket brands. This could result in longer shipping times or difficulty finding replacements if the flange fails prematurely.

2. **Potential Overkill for Stock Applications**

If you re not running an aftermarket exhaust system (e.g., sticking with the stock muffler), the SLP flange might be unnecessary. It could also introduce slight weight or complexity without significant performance benefits for stock setups.

3. **Cost Relative to Alternatives**

While not excessively expensive, the flange may be pricier than generic exhaust flanges or seals from brands like **Muffler Man, Arctic Cat OEM parts, or budget aftermarket suppliers**. For riders on a tight budget, this could be a drawback.

4. **Warranty or Return Limitations**

Starting Line parts may have specific warranty terms or be sold as "final sale" items, meaning they might not qualify for returns or replacements if damaged during installation. Always check the seller s policy before purchasing.

5. **Installation Challenges for Beginners**

While generally straightforward, exhaust flange installation can be tricky if you re unfamiliar with snowmobile mechanics. Improper torque or misalignment could lead to leaks or damage to the exhaust system.

6. **Compatibility with Non-SLP Systems**

If you re not using an SLP exhaust, the flange may not offer any tangible benefits over a standard OEM or third-party alternative. It s best suited for performance-oriented builds.

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### **Conclusion**

The **Starting Line 1773-S745387-63 SLP Exhaust Flange with Grafoil Seal** is a **high-quality, reliable choice** for riders upgrading their **2001-2002 Arctic Cat ZR 800** with an SLP exhaust system. Its OEM fitment, durable Grafoil seal, and compatibility with performance upgrades make it a strong option for those prioritizing longevity and performance. However, it may not be necessary for stock applications or riders on a budget seeking simpler solutions.

The flange s primary value lies in **preventing leaks, ensuring a secure fit, and supporting aftermarket exhaust systems** without compromising structural integrity. If you re running an SLP exhaust or plan to in the future, this is a solid investment. For stock setups or cost-conscious buyers, a standard OEM or budget flange might suffice.

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### **Recommendation**

- You re installing or upgrading to an **SLP exhaust system** on your ZR 800.

- You want a **durable, leak-proof seal** that matches OEM specifications.

- You prioritize **long-term reliability** and are willing to pay a premium for quality.

- You re keeping the **stock exhaust** and don t need an aftermarket flange.

- You re on a tight budget and can find a **simpler, cheaper alternative** (e.g., Arctic Cat OEM flange or a generic Grafoil seal).

- You re uncomfortable with installation and prefer a more beginner-friendly part.

For most **performance-oriented ZR 800 riders**, this flange is a **worthwhile upgrade** that pays off in durability and peace of mind. Pair it with proper installation techniques (e.g., using the correct torque settings and ensuring a clean mating surface) to maximize its lifespan.

Details:

SLP Exhaust Flange Grafoil Seal-Twin Pipe for 2001 2002 Arctic Cat ZR 800: For Systems. This is helpful if you are buying multiple items. I need to exchange an item. 2010 - 2011 Arctic Cat F6 EFI Son Pro.

Parts without fitment are to be assumed universal and may require vehicle modification. 2012 - Arctic Cat F5 LXR.: Brand: Starting Line Products, model Number: 1773-S745387-63.

part #: 1773s74538763 price

• $57.87

specifications exhaustsnowmobilee:

• for models: Zr, 800, Twin
• for makes: Arctic, Arctic-cat
• for years: 2001-2002
• brand: Starting Line Products
• mpn: 1773-s745387-63
• part type: Seal Pipe Exhaust Flange

payments exhaustsnowmobilee:

• other
• wallet: Paypal
• credit card: Visa

shipping exhaustsnowmobilee:

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

general exhaustsnowmobilee:

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

returns exhaustsnowmobilee:

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

offer exhaustsnowmobilee:

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

seller exhaustsnowmobilee:

• city: Boise, ID
• # reviews: 85419
• rating: 99.9%

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