fits model: Yz, 125. make: Yamaha. year: 2003–2004.

( Manufacturer Part Number: 5H0-1131D-20-00 ), ( Part Type: Valve )
The YAMAHA YZ 125 (Model: 5H0-1131D-20-00) is an exquisite piece of two-wheeled engineering, designed with the thrill-seeking off-road enthusiast in mind. This model, specifically from the 2003 to 2004 production years, is a testament to Yamaha's emphasis on power, performance, and style.
The heart of this motorcycle is its powerful 125cc liquid-cooled, 2-stroke, reed-valve engine. This engine delivers an impressive power output, providing the rider with a thrilling and responsive ride. The 5-speed transmission ensures smooth and precise gear shifts, allowing you to make the most out of the engine's performance.
The YZ 125 boasts a lightweight aluminum frame for optimal maneuverability and control. The suspension system, comprising of a KYB inverted fork and a KYB rear shock, offers excellent handling and absorbs bumps and rough terrain with ease. The wide 80/100-21 front and 100/90-19 rear tires provide ample traction, ensuring a secure grip on various surfaces.
The 2003-2004 YZ 125 features a stylish design, with its iconic blue and white color scheme. The ergonomic seating position, combined with adjustable footpegs, ensures a comfortable ride even during long hours on the trail. The bike is equipped with a high-visibility headlight for safe nighttime riding and a digital speedometer for accurate speed readings.
In conclusion, the Yamaha YZ 125 (5H0-1131D-20-00) is more than just a motorcycle. It's a symphony of power, performance, and style that promises an unforgettable off-road experience. Whether you're a seasoned rider or a newcomer to the world of motocross, this bike is a worthy addition to your garage.
Pros of buying a 2003-2004 Yamaha YZ125:1. Reliability: The YZ125 is known for its durability and reliability, making it a great choice for both beginners and experienced riders.
2. Power: With a 125cc two-stroke engine, the YZ125 delivers plenty of power for its size, making it fun to ride on the track or in the woods.
3. Handling: The YZ125 has excellent handling and agility, making it easy to maneuver in tight corners and over obstacles.
4. Aftermarket Support: The YZ125 has a large aftermarket support system, with many parts and accessories available to customize and upgrade the bike to meet your needs.
5. Affordability: Compared to newer models, the YZ125 is more affordable, making it a great option for those on a budget.
Cons of buying a 2003-2004 Yamaha YZ125:1. Maintenance: Two-stroke engines require more frequent maintenance than four-stroke engines, including regular oil changes and spark plug replacements.
2. Noise Levels: Two-stroke engines can be louder than four-stroke engines, which may be a concern for riders in residential areas or those looking for a more quiet ride.
3. Fuel Efficiency: Two-stroke engines are not as fuel-efficient as four-stroke engines, which means you may need to fill up more often.
4. Availability of Parts: While the YZ125 has a large aftermarket support system, some older parts may be harder to find or more expensive.
Conclusion: The 2003-2004 Yamaha YZ125 is a reliable and powerful two-stroke bike that is great for both beginners and experienced riders. While it requires more maintenance than four-stroke engines, its affordability, handling, and aftermarket support make it a great option for those looking for a fun and capable bike.
Recommendation: If you are looking for a reliable and powerful two-stroke bike that is affordable and has great handling, the 2003-2004 Yamaha YZ125 is a great choice. Just be prepared for the additional maintenance requirements and potential difficulty in finding some older parts.
This is from Yamaha.