WISECO 4738M07700 Piston Pin 12.7 77.00MM

( Brand: Wiseco ), ( Manufacturer Part Number: 4738M07700 ), ( Type: Piston ), ( Manufacturer Warranty: No ), ( Oe/oem Part Number: 7700xu, 4738m07700, W5922, S646 )

Review WISECO Piston 12.7 77.00mm No Pin fits YZ250F 2001–2004

The WiseCo 4738M07700 piston is a high-performance replacement part specifically designed for the Yamaha YZ250F motorcycle model from the years 2001 to 2004. This piston is engineered to fit perfectly into the engine of your YZ250F, ensuring a reliable and efficient operation of your two-stroke engine.

The WiseCo piston features a pin diameter of 77.00mm and a pin length of 12.7mm. This dimension is crucial in maintaining the proper clearance between the piston and the crankshaft pin, which is essential for the optimal functioning of your engine.

The piston is manufactured using advanced materials and production techniques. The piston crown is made from a high-strength aluminum alloy, providing excellent heat dissipation and durability. The piston skirt is designed with a precise fit and a low friction coating, ensuring minimal wear and tear on the cylinder bore.

The WiseCo piston also comes with a new ring set, which includes a compression ring, a oil control ring, and a transfer port ring. These rings are engineered to provide optimal sealing and engine performance, helping to improve power output and fuel efficiency.

Installing the WiseCo piston is a straightforward process, and it comes with detailed installation instructions to ensure a hassle-free experience. The piston is also backed by a comprehensive warranty, giving you peace of mind and protection against any manufacturing defects.

In summary, the WiseCo 4738M07700 piston is a high-quality replacement part that is specifically designed for the Yamaha YZ250F motorcycle model from 2001 to 2004. It features a precise pin diameter and length, advanced materials and production techniques, and a new ring set to ensure optimal engine performance and durability. With detailed installation instructions and a comprehensive warranty, you can trust that this piston will help keep your YZ250F running smoothly and efficiently.

Wiseco 4738M07700 Piston for YZ250F: A Detailed Analysis

The Wiseco 4738M07700 piston is a popular aftermarket option for the YZ250F motorcycle model. This piston is known for its high-performance capabilities, but like any other 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 4738M07700 piston for your YZ250F.

1. Enhanced Power: The Wiseco piston is designed to provide increased power and torque compared to the stock piston. This is due to its forged construction, which allows for a stronger piston that can withstand higher compression and heat.

2. Improved Durability: Forged pistons are known for their superior durability compared to cast pistons. The Wiseco piston is engineered to last longer than the stock piston, reducing the need for frequent replacements.

3. Customizable: The Wiseco piston is available in various sizes and specifications, allowing riders to customize their engine to suit their specific riding style and power goals.

4. Lightweight: The Wiseco piston is lighter than the stock piston, which can lead to improved engine response and performance.

1. Cost: The Wiseco piston is more expensive than the stock piston. While the performance benefits may justify the cost for some riders, others may find it to be a financial burden.

2. Installation: Installing the Wiseco piston requires a certain level of mechanical expertise and specialized tools. It is not a DIY project for most riders and will likely require professional installation.

3. Increased Engine Stress: The Wiseco piston is designed for high-performance applications and can put additional stress on the engine. This may lead to increased wear and tear on other engine components, requiring more frequent maintenance or replacements.

The Wiseco 4738M07700 piston offers significant performance benefits for the YZ250F motorcycle, including increased power, durability, and customization options. However, it also comes with some disadvantages, such as a higher cost, more complicated installation process, and increased engine stress. Ultimately, whether or not the Wiseco piston is worth the investment depends on the rider's goals, budget, and mechanical expertise.

If you are a serious off-road rider looking for maximum power and durability from your YZ250F, the Wiseco piston may be a worthwhile investment. However, if you are a casual rider or have a limited budget, the stock piston may be sufficient for your needs. In any case, it is recommended to consult with a professional mechanic or engine builder before making a decision to ensure that you are making an informed choice.

Details:

This is a GENUINE NOS part.

part #: 4738m07700 price

• $81.12

specifications pistondon:

• for models: Yz250f
• for years: 2001-2004
• brand: Wiseco
• mpn: 4738m07700
• type: Piston
• manufacturer warranty: No
• oe/oem part number: 7700xu, 4738m07700, W5922, S646

offer pistondon:

• quantity: 1
• sold: 0
• options: Ship-to-home
• availability: In Stock
• started: October 21, 2025

returns pistondon:

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

payments pistondon:

• credit card: Diners-club
• wallet: Apple-pay
• other

seller pistondon:

• # reviews: 16487
• rating: 98.4%
• city: Chaffee, New York

general pistondon:

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

shipping pistondon:

• type: Fixed
• transit: 3-9 Days
• cost: $0.00
• class: Economy
• service: Economy

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