SPORTS PARTS INC 4509-S678859-99 Spi Tailpipe Ski Doo GASKET-51 1/2 I.D.X64 O.D.X16 1/5 800R

( Brand: Sports Parts Inc ), ( Manufacturer Part Number: 4509-S678859-99 )

Review SPORTS PARTS INC Spi Tailpipe 1/2.d.x64.d.x16 1/5for Ski doo fits X16 MX 2008

The **SPI Tailpipe Gasket (Part Number: 4509-S678859-99)** is a precision-engineered, high-performance aftermarket gasket designed exclusively for the **2008 Ski-Doo MX 800R**, ensuring a secure and leak-proof seal between the tailpipe and exhaust system. Crafted from **high-temperature-resistant silicone rubber**, this gasket is engineered to withstand the intense heat and pressure generated by the MX 800R s powerful twin-cylinder engine, maintaining optimal performance under demanding off-road conditions. With an **inner diameter (I.D.) of 5 inches**, an **outer diameter (O.D.) of 6 inches**, and a **thickness of 1/5 inch**, the gasket is meticulously sized to fit snugly within the exhaust manifold and tailpipe assembly, eliminating gaps that could lead to exhaust leaks, reduced efficiency, or even engine damage over time. Its **reinforced construction** ensures durability against vibration, corrosion, and thermal stress, making it a reliable upgrade for riders seeking enhanced exhaust flow and longevity. Whether you're tackling rugged trails or pushing the limits on the track, this gasket provides a **tight, airtight seal** that preserves factory performance while reducing the risk of exhaust system wear. Perfect for both maintenance and customization projects, the SPI Tailpipe Gasket is a must-have component for Ski-Doo enthusiasts who demand precision, reliability, and peak engine efficiency.

### Pros and Cons of buying a **Sports 4509-S678859-99 SPI Tailpipe Gasket (51 1/2" I.D. x 64" O.D. x 16/5" for 2008 Ski-Doo MX 800R)**

1. **OEM Compatibility** This gasket is designed specifically for the 2008 Ski-Doo MX 800R, ensuring a proper fit without modifications. It matches the manufacturer s specifications, reducing the risk of leaks or improper sealing.

2. **High-Quality Material** The SPI (Ski-Doo Performance International) brand is known for using durable materials that can withstand high temperatures and vibrations, which are common in ATV exhaust systems. This helps prevent premature failure.

3. **Easy Installation** Since it is a direct replacement part, installation should be straightforward for someone with basic mechanical skills. No special tools or modifications are typically required beyond standard exhaust system maintenance.

4. **Performance Considerations** While primarily a sealing component, a properly fitted gasket ensures optimal exhaust flow, which can contribute to better engine performance and efficiency. A leaky gasket can cause power loss and increased emissions.

5. **Cost-Effective Solution** Compared to rebuilding or replacing the entire exhaust system, replacing just the gasket is a budget-friendly fix. It s a small part with a relatively low price point, making it a practical choice for routine maintenance.

6. **Warranty or Return Options** Reputable sellers (e.g., official Ski-Doo dealers, trusted online retailers) may offer warranties or return policies, providing peace of mind in case of defects or incorrect sizing.

7. **Prevents Long-Term Damage** A failing gasket can lead to exhaust leaks, which may damage surrounding components (e.g., muffler, heat shields) or introduce contaminants into the engine bay. Replacing it proactively avoids costly repairs down the line.

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1. **Potential Counterfeit Risk** If purchased from an untrusted seller (e.g., third-party marketplaces without verification), there s a risk of receiving a knockoff or low-quality replica. Counterfeit parts may fail quickly or not fit correctly.

2. **Limited Lifespan** Like all gaskets, this part will eventually wear out due to heat, vibration, and exposure to elements. The lifespan depends on usage (e.g., off-road abuse, frequent high-speed riding) and maintenance. Some riders may need to replace it every 50 100 hours or more.

3. **Installation Challenges** While generally straightforward, improper installation (e.g., over-tightening, misalignment) can damage the gasket or exhaust flanges. This requires careful attention to torque specifications and alignment during replacement.

4. **Price Variability** Prices can fluctuate based on the seller, brand reputation, or demand. Some sellers may mark up prices unnecessarily, especially for parts with limited availability.

5. **Compatibility Doubts** While the part is listed for the 2008 MX 800R, slight variations in exhaust designs across model years or modifications (e.g., aftermarket exhausts) could cause fitment issues. Always verify the exact specifications of your vehicle s exhaust system.

6. **No Performance Upgrade** This gasket does not enhance performance; it only ensures proper sealing. If you re looking for exhaust upgrades (e.g., flow improvements, noise reduction), you may need additional parts (e.g., a new muffler or cat-back system).

7. **Environmental Exposure** If the gasket is exposed to mud, water, or extreme temperatures for prolonged periods, its lifespan may be shortened. Regular cleaning and inspection are recommended.

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The **Sports 4509-S678859-99 SPI Tailpipe Gasket** is a reliable, OEM-compatible part for the 2008 Ski-Doo MX 800R that offers a cost-effective solution for maintaining exhaust integrity. Its high-quality construction and ease of installation make it a practical choice for routine maintenance, provided it is sourced from a trusted supplier. However, its lifespan is limited by usage conditions, and improper installation or counterfeit parts could negate its benefits.

- **Buy from an Authorized Dealer or Reputable Retailer:** Purchase the gasket from an official Ski-Doo dealer, a trusted online marketplace (e.g., Amazon, RockAuto, or Ski-Doo s official site), or a well-reviewed specialty parts store. Avoid unknown sellers to avoid counterfeit risks.

- **Verify Fitment:** Double-check that the gasket s dimensions (51 1/2" I.D., 64" O.D., 16/5" thickness) match your exact exhaust setup. If your bike has aftermarket modifications, confirm compatibility with the manufacturer or a mechanic.

- **Follow Installation Guidelines:** Use a torque wrench to tighten bolts to the manufacturer s specifications (typically 20 30 ft-lbs for exhaust components). Avoid overtightening, which can warp flanges or crush the gasket.

- **Inspect Regularly:** Check the gasket during routine maintenance (e.g., oil changes) for signs of wear, cracks, or leaks. Replace it proactively if you notice any issues.

- **Consider a Bundle Deal:** If replacing other exhaust components (e.g., muffler, hangers), look for package deals that include the gasket to save money and ensure all parts are compatible.

- **Alternative Options:** If the SPI gasket is unavailable or too expensive, consider other high-quality brands like **AC Delco, Fel-Pro, or Mopar** (for similar applications), though always verify fitment.

**Final Verdict:** For most riders, this gasket is a **solid, no-frills choice** for maintaining their Ski-Doo s exhaust system. It s worth the investment if you prioritize reliability and ease of use, but always prioritize quality sourcing to avoid disappointment. If you re unsure about installation, consult a professional mechanic to ensure a proper job.

Details:

2012 - 2017 Ski-Doo Free ride E-TEC 800R 137.: Brand: Sports Parts Inc, model Number: 4509-S678859-99. This is helpful if you are buying multiple items. 2012 - 2017 Ski-Doo Free ride E-TEC 800R 154.

Parts without fitment are to be assumed universal and may require vehicle modification. I need to exchange an item. 2012 - 2014 Ski-Doo GSX SE E-TEC 800R.

part #: 4509s67885999 prices

• $22.26-$28.99

specifications exhaustsnowmobilee:

• for models: X16, Mx
• for makes: Ski-doo
• for years: 2008
• brand: Sports Parts Inc
• mpn: 4509-s678859-99

payments exhaustsnowmobilee:

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

returns exhaustsnowmobilee:

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

offer exhaustsnowmobilee:

• quantity: 9
• started: February 14, 2026
• availability: In Stock
• sold: 0
• options: Ship-to-home

shipping exhaustsnowmobilee:

• cost: $0.00
• type: Fixed
• class: Standard
• service: Standard
• transit: 6-10 Days

general exhaustsnowmobilee:

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

seller exhaustsnowmobilee:

• rating: 99.9%
• city: Boise, ID
• # reviews: 77670

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