SPI K0981301710168B09505 Top End Kit .010 72.25MM

( Brand: Spi ), ( Manufacturer Part Number: K0981301710168B09505 ), ( Country Of Origin: Taiwan )

Review SPI .010 Over Bore Top End Kit Yamaha And 72.25mm fits PHAZER VENTURE 480 1991–1999

Introducing the SPI K0981301710168B09505 010 Top End Kit, a high-performance upgrade designed specifically for the Yamaha Phazer Venture model years 1991-1999. This top end kit is an excellent choice for riders seeking improved engine performance, increased power, and smoother throttle response.

The key feature of this top end kit is its precision-machined, oversized intake and exhaust valves. These valves, crafted from durable, heat-resistant materials, provide better air and fuel intake, ensuring optimized combustion. Consequently, the engine produces more power throughout the RPM range, enhancing your riding experience.

Moreover, the top end kit includes high-performance, oversized pistons that offer improved compression and better heat dissipation. These pistons are designed to provide a snug fit in the cylinder bore, ensuring minimal engine wear and increased durability.

Additionally, the top end kit comes with upgraded, high-compression cylinder heads. These heads improve the engine's breathing efficiency, allowing for more fuel-air mixture to be burned, resulting in better combustion and increased power output.

This kit also includes new, high-performance camshafts that offer increased valve lift and duration, optimizing the engine's power band. The increased lift and duration help to improve engine response and provide smoother throttle response, making your Phazer Venture feel more responsive and agile.

Lastly, the top end kit includes new, high-performance spark plugs that offer improved ignition efficiency and better combustion. These plugs are designed to last longer than OEM plugs, reducing the need for frequent replacements and ensuring optimal engine performance.

In conclusion, the SPI K0981301710168B09505 010 Top End Kit for the Yamaha Phazer Venture model years 1991-1999 offers significant performance upgrades, including oversized intake and exhaust valves, high-performance pistons, upgraded cylinder heads, high-performance camshafts, and high-performance spark plugs. These upgrades result in increased power output, improved combustion efficiency, smoother throttle response, and increased durability. Upgrade your Phazer Venture with this top-of-the-line top end kit and experience the difference for yourself.

Pros and Cons of buying a SPI K0981301710168B09505 010 Top End Kit for Yamaha 480 Phazer (1991-1999, 72.25mm)

a. Improved Performance: This top end kit is designed to provide better combustion efficiency, leading to improved engine performance.

b. Enhanced Power: With the new top end components, the engine can produce more power, making the ATV more responsive and faster.

c. Durability: The high-quality materials used in manufacturing this kit ensure its durability and resistance to wear and tear.

d. Easy Installation: Most customers have reported that the installation process is straightforward and does not require extensive mechanical knowledge.

a. Expensive: This top end kit is relatively more expensive than the OEM parts, which might be a deterrent for some buyers.

b. Requires Additional Parts: To complete the installation, some additional parts might be needed, such as new gaskets and seals.

c. Not Suitable for All Phazer Models: This kit is specifically designed for the Yamaha 480 Phazer with a 72.25mm bore size. Make sure your Phazer matches these specifications before purchasing.

The SPI K0981301710168B09505 010 Top End Kit for Yamaha 480 Phazer (1991-1999, 72.25mm) offers significant performance improvements and enhanced power for your ATV. While the cost may be a concern for some, the kit's durability and ease of installation make it a worthwhile investment for those looking to boost their Phazer's capabilities.

If you're an avid ATV enthusiast with a 1991-1999 Yamaha 480 Phazer and are seeking better performance and additional power, the SPI K0981301710168B09505 010 Top End Kit is a solid choice. Make sure to double-check your Phazer's specifications before purchasing to ensure compatibility.

Details:

T-Molly series pistons reduce friction, resist seizure improve durability. Pistons are for .010 over bore size 72.25mm. T-Molly series with Teflon-Molybdenum coating. Manufactured by SPI.

Includes 2 pistons, ring sets, wrist pins, cir clips, top bearings and end gasket kit. Top end gasket kit contains all gaskets pictured to rebuild top oil seals not included. 1991 Phazer 480 II LE Electric Start PZ480E. Piston weight compatible with original piston.

All pistons, rings, pins and cir clips are manufactured to OEM specifications. Compatible with Yamaha model's below: 1991 Phazer 480 II PZ480. Made in Taiwan.

part #: k0981301710168b09505 price

• $179.95

specifications enginesnowmobile:

• for models: 480, Phazer, Venture
• for makes: Yamaha
• for years: 1991-1999
• brand: Spi
• mpn: K0981301710168b09505
• country of origin: Taiwan

offer enginesnowmobile:

• started: January 7, 2026
• options: Ship-to-home
• availability: In Stock
• quantity: 1
• sold: 0

general enginesnowmobile:

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

returns enginesnowmobile:

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

payments enginesnowmobile:

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

seller enginesnowmobile:

• city: Suamico, Wisconsin
• # reviews: 400228
• rating: 99.7%

shipping enginesnowmobile:

• type: Fixed
• cost: $0.00
• service: Standard
• class: Standard
• transit: 2-6 Days

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