SPI 09720-710237-09B039 Top Standard End Repair Kit 70.5MM

( Brand: Spi ), ( Manufacturer Part Number: 09720-710237-09B039 )

Review SPI Standard Bore Top End Repair Kit Polaris 70.5mm fits XC 500 1999–2001

SPI 09720-710237-09B039 Standard Top End Repair Kit for Polaris XC 500 (1999-2001, 70.5mm)

The SPI 09720-710237-09B039 Standard Top End Repair Kit is specifically designed for the Polaris XC 500 snowmobiles manufactured between 1999 and 2001 with a 70.5mm engine size. This repair kit offers a comprehensive solution for addressing common top end issues, ensuring optimal engine performance and reliability.

1. New piston: The piston is the heart of the engine, and this repair kit comes with a new one to replace the worn-out or damaged one. The piston is engineered to provide improved compression and power output.

2. New rings: The piston rings help maintain the seal between the piston and cylinder wall, preventing the loss of compression and engine oil. This repair kit includes new piston rings for optimal engine efficiency.

3. New gudgeon pin: The gudgeon pin connects the piston to the crankshaft, and this repair kit includes a new one to replace the worn or damaged one. This replacement ensures smooth engine operation.

4. New cylinder head gasket: The cylinder head gasket seals the combustion chamber and coolant passages, preventing the leaks and ensuring proper engine function. The kit comes with a new gasket to replace the old one.

5. New valve guides: Valve guides help keep the engine valves in the correct position, allowing for efficient combustion. This repair kit includes new valve guides to maintain proper engine performance.

6. New valve seals: Valve seals help maintain the compression and prevent engine oil from leaking into the combustion chamber. The kit comes with new valve seals to replace the old ones.

7. New valves: The repair kit also includes new intake and exhaust valves to improve engine performance and ensure proper engine function.

8. New valve springs: Valve springs help keep the valves in place during engine operation. The repair kit includes new valve springs to replace the worn-out ones.

9. New camshaft: The camshaft plays a crucial role in the engine's operation by controlling the opening and closing of the engine valves. This repair kit comes with a new camshaft for optimal engine performance.

10. New lifters: Engine lifters help maintain proper engine oil pressure and ensure smooth engine operation. The repair kit includes new lifters to replace the worn-out ones.

Installing this repair kit is relatively straightforward for experienced mechanics. However, for those less experienced, it may be advisable to consult the Polaris service manual or seek the assistance of a professional mechanic.

In conclusion, the SPI 09720-710237-09B039 Standard Top End Repair Kit for Polaris XC 500 (1999-2001, 70.5mm) is an essential investment for anyone who wants to keep their snowmobile running at its best. This comprehensive repair kit includes all the necessary components to address common top end issues, ensuring optimal engine performance and reliability.

Pros and Cons of buying a SPI 09720-710237-09B039 Standard Top End Repair Kit for Polaris XC 500 (1999-2001, 70.5mm)

a. Comprehensive Kit: This repair kit includes all the necessary parts for a top-end rebuild of a Polaris XC 500 (1999-2001, 70.5mm), making it a convenient one-stop solution.

b. High-Quality Parts: SPI is a reputable brand known for producing durable and reliable aftermarket parts. This kit is no exception, ensuring a long-lasting repair.

c. Cost-Effective: Replacing parts individually can be expensive. Buying a complete repair kit can save money in the long run.

d. Easy Installation: The kit comes with clear instructions, making the installation process simpler and more straightforward.

a. Potential Overkill: If only a few parts need replacing, buying a complete repair kit may result in unnecessary expenditure.

b. Availability: This specific kit may not be readily available at local dealer stores, making online purchases the only option.

c. Possibility of Fitting Issues: As this is an aftermarket kit, there might be minor fitment issues that require some adjustments during installation.

The SPI 09720-710237-09B039 Standard Top End Repair Kit for Polaris XC 500 (1999-2001, 70.5mm) offers several advantages, including a comprehensive set of high-quality parts, cost-effectiveness, and ease of installation. However, it also comes with some drawbacks, like potential overkill and potential fitting issues.

If you are in need of a top-end rebuild for your Polaris XC 500 (1999-2001, 70.5mm) and are comfortable with the cons mentioned above, then the SPI repair kit is an excellent choice. However, if you only need to replace a few parts, consider purchasing them individually to save on unnecessary costs.

Details:

Includes 2 pistons, ring sets, wrist pins, cir clips, top bearings and end gasket kit. T-Molly series with Teflon-Molybdenum coating. T-Molly series pistons reduce friction, resist seizure improve durability. 1999 XC SP 500.

Top end gasket kit contains all gaskets pictured to rebuild top oil seals not included. Made in Taiwan. Compatible with Polaris model's below: 1999 XC 500. All pistons, rings, pins and cir clips are manufactured to OEM specifications.

Pistons are for standard bore size 70.50mm. Manufactured by SPI. Piston weight compatible with original piston.

part #: 0972071023709b039 prices

• $179.95-$250.99

specifications enginesnowmobile:

• for models: Xc, 500
• for makes: Polaris
• for years: 1999-2001
• brand: Spi
• mpn: 09720-710237-09b039

returns enginesnowmobile:

• policy: Returns Accepted
• time: 60 Days
• paid by: Buyer

general enginesnowmobile:

• Snowmobile Parts > Engines Components > Snowmobile Engine Components
• condition: New

payments enginesnowmobile:

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

offer enginesnowmobile:

• quantity: 4
• sold: 0
• availability: In Stock
• options: Ship-to-home
• started: May 24, 2025

shipping enginesnowmobile:

• cost: $0.00
• transit: 5-9 Days
• type: Fixed
• service: Standard
• class: Standard

seller enginesnowmobile:

• # reviews: 387048
• city: Suamico, Wisconsin
• rating: 99.5%

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