fits model: Yz125. make: Yamaha. year: 2003–2004.

( Manufacturer Part Number: 5UN-17221-00-00 ), ( Type: Transmission Complete Assembly )
The 5UN-17221-00-00 transmission is a crucial component of the 2003 and 2004 Yamaha YZ125 dirt bike. This transmission is a testament to Yamaha's engineering prowess, designed to provide smooth and reliable power transfer from the engine to the rear wheel.
The 5UN-17221-00-00 transmission is a 5-speed unit, each gear meticulously engineered for optimal performance. The first gear is designed for quick acceleration and tight maneuvers, while the higher gears allow for efficient and fast cruising on straights. The transmission features a heavy-duty clutch system, ensuring smooth shifts and consistent power delivery.
The transmission housing is made of high-strength materials, providing excellent durability and resistance to the harsh conditions that dirt bike transmissions often face. The internal components, including the gears and bearings, are precision-machined for optimal fit and performance.
The 5UN-17221-00-00 transmission also features a sealed gearbox, keeping out dirt and debris to prevent damage and extend the life of the transmission. The oil used in the transmission is specifically formulated for high-performance applications, providing excellent lubrication and protection against wear and corrosion.
In conclusion, the 5UN-17221-00-00 transmission is a vital part of the 2003 and 2004 Yamaha YZ125, providing reliable power delivery and durability under the most demanding conditions. With its precision engineering, high-strength materials, and sealed gearbox, this transmission is built to last and deliver consistent performance on the track.
Pros of buying a 2003-2004 Yamaha YZ125 with a 5UN-17221-00-00 transmission:1. Reliability: The YZ125 is known for its durability and reliability, which is a plus for any motorcycle owner.
2. Power: The YZ125 is a powerful bike, with a 125cc engine that delivers plenty of power for off-road riding.
3. Parts Availability: The YZ125 is a popular bike, so parts are widely available and reasonably priced.
4. Resale Value: The YZ125 has a good resale value, especially if it's well-maintained.
Cons of buying a 2003-2004 Yamaha YZ125 with a 5UN-17221-00-00 transmission:1. Age: The YZ125 is an older model, so it may not have some of the modern features that newer bikes have.
2. Maintenance: Older bikes require more maintenance than newer ones, so you'll need to budget for routine maintenance and repairs.
3. Performance: While the YZ125 is a powerful bike, it may not be as fast or as nimble as some of the newer models on the market.
4. Fuel Efficiency: Older bikes tend to be less fuel-efficient than newer ones, so you'll need to budget for more frequent fuel stops.
Ending conclusion:The 2003-2004 Yamaha YZ125 with a 5UN-17221-00-00 transmission is a reliable and powerful bike that offers good value for money. However, it's an older model, so it may require more maintenance and may not have some of the modern features that newer bikes have. If you're looking for a reliable and powerful off-road bike that offers good resale value, the YZ125 is a good option. But if you're looking for a bike with modern features and better fuel efficiency, you may want to consider a newer model.
Recommendation:If you're looking to buy a 2003-2004 Yamaha YZ125 with a 5UN-17221-00-00 transmission, make sure to do your homework and research the bike's history and maintenance records. Look for a bike that has been well-maintained and that has all the necessary service records. Also, consider budgeting for routine maintenance and repairs, as well as the cost of fuel. Overall, the YZ125 is a reliable and powerful bike that offers good value for money, but it's important to approach the purchase with a realistic expectation of what you'll need to spend to keep it running smoothly.
I only guarantee fitment from bike listed that part was removed.
Tim's motocross parts Yamaha YZ125 transmission complete assembly 5un this is in very good condition and shows normal signs of wear. All the teeth look good and side dogs have light normal wear removed from: 2003 Yamaha YZ125 please review pictures to assess condition of item.