fits model: Yz400f, 400f, Yz400, Yz. make: Yamaha. year: 1998–1999.

( Manufacturer Part Number: 99YZ400F ), ( Type: Subframe )
The Yamaha YZ400F, specifically the 1999 model, is a legendary dirt bike that showcases the iconic heritage of Yamaha's off-road lineup. This particular model, with a frame shared with the 1998 YZ400F and 99YZ400F, is a testament to Yamaha's commitment to delivering high-performance, reliable, and durable machines.
The YZ400F 1999 features a lightweight and robust aluminum frame, which is both rigid and flexible to deliver exceptional handling and stability. This frame is shared with the 98YZ400F and 99YZ400F, ensuring a consistent ride experience across these models. The frame design, with its advanced geometry, allows for optimal weight distribution, contributing to the bike's agility and responsiveness in various off-road conditions.
The bike is powered by a potent 4-stroke, liquid-cooled, 4-valve, single-cylinder engine, delivering a strong and responsive power output. The engine is equipped with a Mikuni carburetor for precise fuel delivery, ensuring optimal performance in a wide range of operating conditions. The 5-speed transmission, coupled with a wet multi-plate clutch, provides smooth power transfer and allows the rider to perfectly match engine speed to riding conditions.
Suspension on the YZ400F 1999 is provided by a KYB Speed-Sensitive System (SSS) 48mm inverted fork in the front, and a KYB, adjustable, single shock in the rear. Both the fork and the shock are designed to deliver plush, responsive, and controlled performance, allowing the rider to tackle any off-road terrain with confidence.
Braking is handled by a hydraulic disc brake system, with a 250mm disc in the front and a 245mm disc in the rear. This system delivers powerful, consistent stopping power, ensuring the rider's safety in a variety of riding conditions.
The 1999 YZ400F features a modern and aerodynamic bodywork, including a tapered aluminum handlebar and a compact digital instrument panel, providing vital riding information at a glance. The bike's ergonomics are designed to provide maximum comfort and control, enabling the rider to focus on the terrain ahead.
In conclusion, the Yamaha YZ400F 1999 is a versatile and powerful off-road bike, equipped with a robust frame, a potent engine, and high-performance suspension and braking systems. With its modern design and ergonomics, this bike offers an unparalleled riding experience, making it an ideal choice for off-road enthusiasts.
Pros of buying a 1999 Yamaha YZ400F (or a frame from a 1998 YZ400F, which is compatible) include:1. Reliability: The YZ400F series is known for its durability and reliability, making it a popular choice among off-road enthusiasts.
2. Power: The 1999 model features a powerful 400cc engine, providing plenty of horsepower for tackling tough terrain.
3. Handling: The bike has a well-balanced chassis and suspension, providing excellent handling and control in various off-road conditions.
4. Parts availability: The YZ400F is a well-known and popular model, making it easy to find replacement parts for repairs and upgrades.
5. Affordability: Compared to newer models, the 1999 YZ400F can be a more affordable option, especially if you're looking for a used bike.
However, there are also some potential cons to consider:1. Age: As with any used vehicle, the 1999 YZ400F may have some wear and tear, which could require additional maintenance or repairs.
2. Technological limitations: The bike may not have some of the modern features and technologies found in newer models, such as electronic fuel injection or advanced suspension systems.
3. Aesthetics: Some people may prefer the look of newer models, which may have more modern styling and design.
In conclusion, the 1999 Yamaha YZ400F (or a frame from a 1998 YZ400F) is a reliable, powerful, and capable off-road bike that can be a great option for those looking for a more affordable used option. However, potential buyers should be aware of the potential for wear and tear, as well as the limitations of older technology. Ultimately, the decision to buy a 1999 YZ400F should be based on individual needs, preferences, and budget.
1999 YAMAHA YZ400F SUBFRAME, SUBFRAME IS IN USABLE CONDITION BUT HAS A BIT OF RUST AND MAY BE HAIR OFF STRAIGHT SEE PICS. FITS THE 98YZ400F.