YAMAHA 1743722559037710 Phathead Cylinder Head

( Manufacturer Part Number: 1743722559037710 ), ( Engine Type: 2-stroke ), ( Type: Cylinder Head ), ( Machine Type: Off-road Motorcycle ), ( Oe/oem Part Number: 5et-11311-11-00 ), ( Material: Aluminum ), ( Vintage Part: No )

Review YAMAHA Phathead Cylinder Head fits YZ125 1994–2000

The Yamaha YZ125 Phathead Cylinder Head, model number 1743722559037710, is a high-performance aftermarket part designed specifically for the Yamaha YZ125 motorcycle model produced between 1994 and 2000. This cylinder head is an upgraded version of the original equipment, engineered to deliver increased power and torque, as well as enhanced cooling capabilities.

The Phathead cylinder head features a large 41mm intake valve and a 34mm exhaust valve, both made of high-quality titanium material. These larger valves provide better gas flow and improved combustion efficiency, resulting in more power and better engine response. The intake port design, too, has been optimized for improved airflow and better engine breathing, which further contributes to increased power output.

This cylinder head also comes with a revised camshaft profile, designed to provide better power delivery throughout the rev range while maintaining good low-end torque. The camshaft profile, combined with the larger valves, results in a more efficient combustion process, leading to increased horsepower and torque.

In addition to performance enhancements, the Phathead cylinder head also comes with improved cooling capabilities. The cylinder head features a larger cooling fin area, which increases the surface area for heat dissipation and helps keep the engine temperature in check, especially during high-performance riding. The cooling fins are also strategically placed to maximize airflow, further improving cooling efficiency.

This aftermarket cylinder head is CNC-machined from high-grade aluminum alloy, ensuring a precise fit and finish. It also comes with new head gasket and valve guides, making installation a straightforward process. The Phathead cylinder head is a direct replacement for the stock cylinder head on the Yamaha YZ125 motorcycles produced between 1994 and 2000 and is backed by a 1-year warranty.

In conclusion, the Yamaha YZ125 Phathead Cylinder Head, model number 1743722559037710, is a high-performance aftermarket part designed to deliver increased power and torque, as well as enhanced cooling capabilities, for the Yamaha YZ125 motorcycle model produced between 1994 and 2000. This upgraded cylinder head features larger valves, a revised camshaft profile, and improved cooling capabilities, all contributing to a more powerful and efficient engine. The cylinder head is CNC-machined from high-grade aluminum alloy, ensuring a precise fit and finish, and is backed by a 1-year warranty.

The Yamaha YZ125 Phathead cylinder head is an aftermarket performance part designed to enhance the power and torque of the 1994-2000 Yamaha YZ125 motorcycle. Here are some potential pros and cons of purchasing this cylinder head:

1. Increased Power: The Phathead cylinder head is known for providing additional power and torque, which can lead to improved acceleration and better overall performance.

2. Enhanced Durability: The Phathead cylinder head is designed to be more durable than the stock head, which can help reduce engine wear and tear and extend the life of the engine.

3. Improved Thermal Efficiency: The Phathead cylinder head features larger intake and exhaust ports, which can improve thermal efficiency and help the engine run cooler.

4. Better Power Delivery: The Phathead cylinder head can provide smoother power delivery throughout the RPM range, which can make the motorcycle more responsive and easier to ride.

1. Cost: The Phathead cylinder head is a more expensive aftermarket part, which can be a significant investment for some riders.

2. Installation Complexity: Installing the Phathead cylinder head can be a complex process, and it may require specialized tools and knowledge.

3. Potential Compatibility Issues: While the Phathead cylinder head is designed to fit the 1994-2000 Yamaha YZ125, there may be compatibility issues with certain motorcycle configurations or modifications.

In conclusion, the Yamaha YZ125 Phathead cylinder head can provide significant performance benefits for riders looking to enhance the power and durability of their motorcycle. However, the cost, installation complexity, and potential compatibility issues may be drawbacks for some. Ultimately, the decision to purchase this aftermarket part depends on an individual's budget, technical skills, and riding goals.

If you are confident in your technical abilities and have the budget for it, the Phathead cylinder head can be a worthwhile investment for improving the performance of your Yamaha YZ125. Alternatively, if you are looking for a more cost-effective solution or prefer a less complex installation, there may be other aftermarket parts or modifications that better suit your needs.

Details:

Slightly used 1994 2000 YZ125 phathead dome In perfect working condition ready to bolt on.

specifications cylindermotorcycleiz:

• for models: Yz125
• for makes: Yamaha
• for years: 1994-2000
• mpn: 1743722559037710
• engine type: 2-stroke
• type: Cylinder Head
• machine type: Off-road Motorcycle
• oe/oem part number: 5et-11311-11-00
• material: Aluminum
• vintage part: No

shipping cylindermotorcycleiz:

• carrier: FedEx
• type: Calculated
• cost: $28.34
• class: Economy
• transit: 4-10 Days
• service: FedEx Ground Economy

returns cylindermotorcycleiz:

• policy: No Returns

general cylindermotorcycleiz:

• condition: Used
• Motorcycle Scooter Parts Accessories > Engines Engine Parts > Cylinder Heads

payments cylindermotorcycleiz:

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

seller cylindermotorcycleiz:

• rating: 100.0%
• city: Browns Mills, New Jersey
• # reviews: 80

offer cylindermotorcycleiz:

• options: Ship-to-home
• started: May 3, 2026
• best offers: True
• availability: In Stock
• sold: 0
• quantity: 1

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