WISECO 457P2 Nos Piston 49.5MM

( Brand: Wiseco ), ( Manufacturer Part Number: 457P2 ), ( Engine Type: 2-stroke ), ( Type: Piston ), ( Machine Type: Off-road Motorcycle ), ( Items Included: Piston Rings ), ( Piston Diameter: 49.5 Mm ), ( Country Of Origin: United States )

Review WISECO Nos Yamaha Piston 49.5mm 1st Oversize fits YZ80 YZ 1976–1980

Introducing the WISCO 457P2 piston, specifically designed for Yamaha YZ 80 motorcycles manufactured between 1976 and 1980. This high-performance piston is an excellent replacement option for riders seeking to enhance their engine's power and efficiency.

The WISCO 457P2 piston boasts a bore size of 49.5mm, ensuring a perfect fit for the YZ 80 engines during that production period. Made from a forged aluminum alloy, this piston offers superior strength and durability compared to its cast counterparts. Its forged construction enables it to handle the rigors of off-road racing and riding, allowing for increased power output and improved engine response.

The piston's crown features a domed shape, which aids in optimal combustion by creating a larger contact area between the piston and the cylinder head. This results in a more efficient transfer of energy from the fuel-air mixture to the crankshaft, ultimately improving engine performance.

Moreover, the WISCO 457P2 piston comes with a lightweight skirt design, minimizing frictional losses during the piston's reciprocating motion. This feature not only reduces engine drag but also contributes to increased power output and improved fuel efficiency.

The piston ring grooves are precision machined to ensure proper ring fit and sealing. WISCO utilizes a high-tensile piston ring material, which provides excellent compression and oil control, ensuring proper engine lubrication and optimal performance.

In summary, the WISCO 457P2 piston is an ideal upgrade for Yamaha YZ 80 motorcycles from 1976 to 1980. Its forged aluminum alloy construction, domed crown, lightweight skirt design, and precisely machined piston ring grooves contribute to enhanced power output, improved engine response, and increased fuel efficiency. Investing in this high-quality piston will provide riders with a more enjoyable and capable off-road riding experience.

Wiseco 457P2 NOS Piston for 1976-1980 Yamaha YZ80: A Detailed Analysis

The Wiseco 457P2 NOS (New Old Stock) piston is a popular aftermarket upgrade for the 1976-1980 Yamaha YZ80 two-stroke motorcycle. This piston is known for its high-performance capabilities. However, like any aftermarket part, it comes with its own set of advantages and disadvantages. In this analysis, we will discuss the pros and cons of purchasing a Wiseco 457P2 NOS piston for a Yamaha YZ80.

1. Enhanced Power: This piston is designed to provide increased power output. It is forged from high-quality aluminum alloy, ensuring durability and strength. The piston's design allows for better combustion and efficient transfer of power to the crankshaft.

2. Improved Engine Response: The Wiseco 457P2 NOS piston offers improved engine response. This is due to its lighter weight and superior design, which allows the engine to rev more smoothly and respond quicker to throttle inputs.

3. Longevity: The piston's forged construction ensures that it can withstand the rigors of high-performance riding. It also features a skirt coating to prevent scuffing and wear, further extending its lifespan.

1. Cost: The Wiseco 457P2 NOS piston is a premium aftermarket part, and it comes with a premium price tag. It may not be within everyone's budget, especially for those on a tight budget or those who are just starting out in motorcycle racing.

2. Installation Complexity: Installing a new piston can be a complex process, especially for those who are not experienced in engine rebuilds. It may require specialized tools and expertise, which could add to the overall cost and time investment.

3. Potential Compatibility Issues: It is essential to ensure that the Wiseco 457P2 NOS piston is compatible with your specific Yamaha YZ80 engine. Failure to do so could result in engine damage or poor performance.

The Wiseco 457P2 NOS piston is an excellent upgrade for those seeking high-performance capabilities for their 1976-1980 Yamaha YZ80. Its advantages, such as enhanced power, improved engine response, and longevity, make it a worthwhile investment for serious racers. However, its disadvantages, including cost, installation complexity, and potential compatibility issues, should be carefully considered before making a purchase.

If you are a serious racer looking to maximize the performance of your 1976-1980 Yamaha YZ80, the Wiseco 457P2 NOS piston is an excellent choice. However, it is recommended that you consult with a professional mechanic or engine builder to ensure the piston's compatibility with your specific engine and to assist with the installation process. Additionally, be prepared for the added cost and time investment that comes with this high-performance aftermarket part.

Details:

NOS Wiseco piston for 76-80 YZ 80 -49.5mm which is the first oversize from OEM standard Rings are included Wrist pin missing box What you see in pictures whats included, and rings.

part #: 457p2 prices

• $62.95-$99.99

specifications pistondon:

• for models: Yz80, Yz
• for makes: Yamaha
• for years: 1976-1980
• brand: Wiseco
• mpn: 457p2
• engine type: 2-stroke
• type: Piston
• machine type: Off-road Motorcycle
• items included: Piston Rings
• piston diameter: 49.5 Mm
• country of origin: United States

seller pistondon:

• rating: 100.0%
• # reviews: 1732
• city: West Columbia, South Carolina

offer pistondon:

• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: February 24, 2026
• quantity: 1

returns pistondon:

• policy: No Returns

shipping pistondon:

• cost: $12.99
• transit: 3-8 Days
• type: Fixed
• class: Standard
• carrier: USPS
• service: USPS Ground Advantage

general pistondon:

• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Pistons, Rings Piston Kits
• condition: New other see details

payments pistondon:

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

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