fits model: Zx9r, Zx900f, Ninja. make: Kawasaki. year: 2000–2003.

( Manufacturer Part Number: 4385851 ), ( Type: Tail Light ), ( Country Of Origin: Japan )
The Kawasaki Ninja ZX-9R and ZX-900F are iconic sportbikes known for their aggressive styling, cutting-edge engineering, and exhilarating performance, and the **Kawasaki 4385851-01-02-03 rear tail/taillight brake light assembly** is a critical yet often overlooked component that enhances both the functionality and aesthetic appeal of these high-performance machines. This meticulously crafted unit is designed to seamlessly integrate with the Ninja s sleek, aerodynamic bodywork, delivering a perfect blend of form and function. The assembly features a modern, angular taillight housing with a sharp, aerodynamic contour that complements the bike s aggressive stance, ensuring it remains both a practical lighting solution and a stylistic statement. Crafted from high-quality, durable materials, the unit is built to withstand the rigors of daily riding, from spirited track sessions to long-distance cruising, while maintaining its pristine appearance under varying weather conditions. The taillight itself is a precision-engineered unit, incorporating advanced LED technology for superior visibility and energy efficiency, ensuring that the bike s presence is always clearly communicated to other road users. The brake light, positioned strategically for optimal visibility, provides instant feedback to following drivers, enhancing safety without compromising the bike s sporty aesthetic. Beyond its functional benefits, this assembly also plays a key role in the Ninja s signature look, with its sleek, integrated design contributing to the bike s overall aggressive yet refined silhouette. Whether viewed from the side or the rear, the unit s clean lines and minimalist styling reinforce the Ninja s reputation as a machine that balances raw performance with timeless elegance. For riders who demand nothing less than perfection in both performance and presentation, this rear tail/taillight brake light assembly is an essential upgrade, ensuring that every aspect of the Kawasaki Ninja ZX-9R or ZX-900F remains as sharp and precise as the bike itself.
### **Pros and Cons of Buying a Kawasaki Ninja ZX-9R/ZX900F (Model Years 2001-2003) with a Rear Tail/Brake Light Issue**
#### **Pros**
1. **Classic Sportbike Design** The ZX-9R/ZX900F (depending on the model) is a well-regarded sportbike with a sleek, aggressive styling that remains desirable among enthusiasts. The 2001-2003 models feature a lightweight frame, sharp handling, and a sporty aesthetic that appeals to riders who appreciate classic Japanese sportbikes.
2. **Strong Engine Performance** The ZX-9R (2001-2003) is powered by a 904cc inline-four engine producing around **120-130 hp**, while the ZX900F (a more street-oriented variant) uses a slightly detuned version of the same engine. Both bikes offer strong mid-range torque and a linear power delivery, making them capable of high speeds and quick acceleration.
3. **Reliability (for its Era)** Kawasaki s inline-four engines from this period are known for durability, especially when maintained properly. With regular oil changes, valve adjustments, and chain maintenance, these bikes can last well beyond 50,000 miles with proper care.
4. **Aftermarket Support** The ZX-9R/ZX900F has a strong aftermarket presence, with availability of performance parts (exhausts, air intakes, ECU tuning), cosmetic upgrades, and suspension modifications. This makes it easier to customize and keep the bike relevant.
5. **Resale Value (for Classics)** While not as valuable as modern high-performance bikes, well-maintained 2001-2003 ZX-9Rs/ZX900Fs hold decent resale value among collectors and enthusiasts of that era. A clean example can fetch a reasonable price, especially if it has a solid service history.
6. **Lightweight and Agile** The bike s aluminum frame and relatively light weight (around **430-450 lbs wet**) make it highly maneuverable, ideal for track days or spirited riding on twisty roads.
7. **Proven Track Heritage** The ZX-9R was a dominant track bike in its time, with many riders using it in amateur and semi-professional racing. This pedigree adds appeal to those who value performance and track capability.
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#### **Cons**
1. **Rear Tail/Brake Light Issue (Common Problem)** The most significant drawback of these models is the **fragile rear tail/brake light assembly**, which is known to break easily due to poor design. The light housing is prone to cracking or detaching from the frame, especially after rough riding or minor impacts. This is a common complaint across multiple years, and replacement parts can be difficult to find without sourcing aftermarket or third-party solutions.
2. **Aging Electronics** The bike s wiring harness and ECU (especially on older models) can degrade over time, leading to intermittent electrical issues. The 2001-2003 models lack modern reliability features like direct fuel injection (the ZX-9R uses carburetors until 2004), which can make maintenance more involved.
3. **Suspension Limitations** The stock suspension (forks and rear shock) is adequate for the time but can feel stiff and outdated by modern standards. Upgrading to aftermarket suspension (e.g., hlins, KYB) is common among serious riders to improve comfort and performance.
4. **Fuel Injection (ZX900F) vs. Carburetors (ZX-9R)**
- The **ZX900F** (fuel-injected) is more reliable and easier to tune than the **ZX-9R** (carbureted), which requires more frequent adjustments and can suffer from carburetor drift.
- If you prefer modern fuel injection, the ZX900F may be the better choice, though it lacks the raw performance of the ZX-9R.
5. **Noise and Vibration** The inline-four engine is loud, and the lack of modern sound insulation means the cabin can be noisy at high speeds. Vibration levels are also higher than in modern bikes, which can lead to rider fatigue on long rides.
6. **Maintenance Intensity** These bikes require **regular valve adjustments** (every 6,000-8,000 miles), chain maintenance, and carburetor tuning (for the ZX-9R). Neglecting these can lead to engine wear or poor performance.
7. **Safety Concerns** The bike s lightweight design means it can be **less stable at high speeds** compared to modern sportbikes with better aerodynamics and electronics (e.g., traction control, ABS). The lack of modern safety features increases the risk of accidents, especially for inexperienced riders.
8. **Parts Availability** While not as scarce as some older bikes, genuine Kawasaki parts for these models can be harder to find compared to newer bikes. Aftermarket parts are more common but may not always fit perfectly.
9. **Riding Position** The aggressive, forward-leaning riding position can be uncomfortable for riders with back or neck issues, especially on long rides.
10. **Environmental and Legal Considerations**
- The ZX-9R/ZX900F may not meet modern emissions standards in some regions, limiting where it can be ridden legally.
- The loud exhaust note may attract unwanted attention or violate noise ordinances in certain areas.
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### **Conclusion**
The **Kawasaki Ninja ZX-9R (2001-2003) or ZX900F (2001-2003)** is a **fantastic bike for enthusiasts who appreciate classic sportbike design, raw performance, and track capability**. It offers a **lightweight, responsive ride** and a **strong engine** that remains fun to push, especially on twisty roads or at the track. The **aftermarket support** and **collector appeal** also make it a worthwhile purchase for those who enjoy restoring or modifying bikes.
However, the **rear tail/brake light issue** is a **major drawback** that can be frustrating to deal with, especially if you prioritize safety and legality. This problem, combined with **aging electronics, carburetor maintenance (for the ZX-9R), and limited modern safety features**, means the bike requires **more attention than a contemporary sportbike**.
If you **prioritize performance, nostalgia, and are willing to invest time in maintenance**, this bike is an excellent choice. But if you **value convenience, modern safety features, or a hassle-free ownership experience**, a newer sportbike (e.g., ZX-10R, GSX-R, or even a modern naked bike) may be a better investment.
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### **Recommendation**
**Buy the bike if:**You are an **enthusiast who enjoys working on bikes** and doesn t mind dealing with minor issues.
You **prioritize raw performance and track use** over daily comfort.
You **plan to address the tail/brake light issue immediately** (e.g., with an aftermarket solution or a custom bracket).
You **appreciate the classic design and want a project bike** rather than a plug-and-play machine.
You **have experience with carbureted engines** (if buying a ZX-9R) or are okay with tuning a fuel-injected ZX900F.
**Avoid the bike if:**You **value modern safety features** (ABS, traction control) and want a hassle-free ride.
You **don t want to deal with frequent maintenance** (valve adjustments, carb tuning, chain care).
The **tail/brake light issue is a dealbreaker** for you, and you re unwilling to modify or replace it.
You **plan to use it as a daily commuter** it s better suited for weekend riding.
You **can t find a reliable used example** with a clean service history.
**Final Verdict:**For the right buyer someone who **loves sportbikes, enjoys tinkering, and isn t deterred by minor quirks** the **2001-2003 Kawasaki ZX-9R/ZX900F is a fantastic purchase**. However, **budget extra for repairs (especially the tail light) and be prepared for more maintenance than a modern bike**. If you can secure a **well-documented example with a fixed tail light and a solid engine**, it will be a rewarding ride. Otherwise, consider a newer model if convenience and reliability are top priorities.
01 02 03 KAWASAKI NINJA ZX9R ZX900F REAR TAIL TAILLIGHT BACK BRAKE LIGHT OEM removed from 2000.