SPI K092564-710238-09503 Top End Repair Kit .040 F/c 74MM

( Brand: Spi ), ( Manufacturer Part Number: K092564-710238-09503 ), ( Country Of Origin: Taiwan )

Review SPI .040 Over Bore Top End Repair Kit Polaris F/c 74mm fits 550 1999–2021

SPI K092564-710238-09503 040 Top End Repair Kit for Polaris 550 FC (1999-2021, 74mm)

This top end repair kit from SPI (Part Number: K092564-710238-09503 040) is specifically designed for Polaris 550 FC snowmobiles manufactured between the years 1999 and 2021, featuring a 74mm engine. The kit is an essential solution for snowmobile enthusiasts and mechanics seeking to restore the performance and reliability of their Polaris 550 FC engines.

The repair kit includes a comprehensive collection of high-quality replacement parts to address common top end wear and tear issues. The components encompass the following:

1. New pistons: Engineered from premium materials to ensure a perfect seal and improved engine efficiency.

2. New rings: Designed to reduce friction and seal effectively, ensuring optimal engine performance.

3. New gaskets: High-quality gaskets to ensure a tight seal between engine components and prevent leaks.

4. New valves: New intake and exhaust valves to improve engine breathing and overall performance.

5. New valve guides: Precision-machined guides to ensure valve alignment and proper sealing.

6. New valve springs: High-tensile springs to maintain proper valve function under extreme conditions.

7. New camshaft: A high-performance camshaft to optimize engine power and efficiency.

8. New timing gears: Precision-machined gears to ensure accurate engine timing.

The repair kit is designed to be a direct replacement for the stock components, ensuring easy installation and a seamless transition back to regular operation. By using only the best materials and manufacturing processes, SPI ensures that each component in this repair kit provides reliable and long-lasting performance.

In summary, the SPI K092564-710238-09503 040 Top End Repair Kit for Polaris 550 FC (1999-2021, 74mm) is an essential solution for restoring the performance and reliability of your Polaris 550 FC engine. With a comprehensive collection of high-quality replacement parts, this kit is designed to provide a long-lasting and effective repair solution.

Pros and Cons of buying a SPI K092564-710238-09503 040 Top End Repair Kit for Polaris 550 FC (1999-2021, 74mm)

The SPI K092564-710238-09503 040 Top End Repair Kit is a comprehensive solution for repairing the top end of Polaris 550 FC snowmobiles manufactured between 1999 and 2021. In this analysis, we will discuss the key advantages and disadvantages of purchasing this repair kit to help you make an informed decision.

A. Comprehensive Solution

This repair kit includes all the necessary components to rebuild the top end of the engine, such as pistons, rings, gaskets, and cylinders. This saves time and effort by eliminating the need to purchase individual parts.

B. OEM Quality

The SPI K092564-710238-09503 040 Top End Repair Kit features OEM (Original Equipment Manufacturer) quality components, ensuring a perfect fit and reliable performance.

C. Cost-Effective

Replacing individual worn-out parts can be expensive and time-consuming. By purchasing this repair kit, you can save money in the long run by addressing all necessary repairs at once.

A. High Upfront Cost

The cost of the SPI K092564-710238-09503 040 Top End Repair Kit is significantly higher than the cost of replacing individual parts. However, considering the long-term savings, this might be a worthwhile investment.

B. Complex Installation

Rebuilding the top end of an engine is a complex process that requires specialized tools and knowledge. This kit is recommended for experienced mechanics or those willing to learn.

The SPI K092564-710238-09503 040 Top End Repair Kit for Polaris 550 FC offers several advantages, including a comprehensive solution, OEM quality, and cost-effectiveness in the long run. However, it comes with a high upfront cost and a complex installation process.

If you are an experienced mechanic or willing to learn, the SPI K092564-710238-09503 040 Top End Repair Kit is an excellent investment for maintaining the performance and longevity of your Polaris 550 FC snowmobile. If you are not confident in your mechanical abilities, consider hiring a professional to ensure a proper installation.

Details:

1999 Trail RMK 550. Includes 2 pistons, ring sets, wrist pins, cir clips, top bearings and end gasket kit. Compatible with Polaris model's below: 1999 Super Sport 550. T-Molly series pistons reduce friction, resist seizure improve durability.

Pistons are for .040 over bore size 74.00mm. All pistons, rings, pins and cir clips are manufactured to OEM specifications. T-Molly series with Teflon-Molybdenum coating. Top end gasket kit contains all gaskets pictured to rebuild top oil seals not included.

Made in Taiwan. Piston weight compatible with original piston. Manufactured by SPI.

part #: k092564-710238-09503 price

• $149.95

specifications enginesnowmobile:

• for models: 550
• for makes: Polaris
• for years: 1999-2021
• brand: Spi
• mpn: K092564-710238-09503
• country of origin: Taiwan

returns enginesnowmobile:

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

seller enginesnowmobile:

• # reviews: 396660
• city: Suamico, Wisconsin
• rating: 99.7%

general enginesnowmobile:

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

offer enginesnowmobile:

• started: December 5, 2025
• quantity: 2
• options: Ship-to-home
• availability: In Stock
• sold: 0

payments enginesnowmobile:

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

shipping enginesnowmobile:

• class: Standard
• transit: 4-8 Days
• cost: $0.00
• type: Fixed
• service: Standard

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