fits model: 250, 300. make: Ktm. year: 2017–2019.

( Manufacturer Part Number: 55603101000EB ), ( Part Type: Frame ), ( Color: Orange ), ( Carb Frame Versions This Could Interchange With: 5540300110033, 5540300130033, 55403101000eb ), ( Country Of Origin: Austria ), ( EAN: 5560310100033 )
The **KTM 55603101000EB Frame (2-Stroke, 2019, Fits 250cc & 300cc Models, 2017 2019)** is a meticulously engineered, high-performance aluminum frame designed to deliver uncompromising rigidity, precision, and durability for off-road enthusiasts seeking the ultimate in motocross and enduro performance. Crafted from premium 7000-series aluminum alloy, this frame is not only lightweight but also exceptionally strong, ensuring optimal power transfer from the engine to the wheels while absorbing the harshest impacts during aggressive riding. The frame s aerodynamic cross-section and carefully optimized geometry provide a balanced, responsive ride that enhances handling and cornering stability, making it ideal for both competitive racers and serious trail riders. With its modular design, this frame seamlessly integrates with KTM s 2-stroke engines, offering a perfect marriage of power and control for the 250cc and 300cc displacements across the 2017 to 2019 model years. The frame s precise fitment ensures minimal flex, reducing energy loss and maximizing efficiency, while its robust construction guarantees longevity even under the most demanding conditions. Whether tackling technical trails, competing in motocross events, or pushing the limits in enduro racing, this frame serves as the backbone of a high-performance machine, embodying KTM s reputation for innovation and relentless performance.
### **Pros and Cons of Buying a KTM 55603101000EB Frame (2-Stroke, 2017 2019 Models, 250cc/300cc)**
#### **Pros**
1. **Lightweight and Agile**
The KTM 2-stroke frames (especially the 250cc and 300cc models) are designed for off-road performance, featuring a compact, durable aluminum frame that keeps the bike nimble. This makes it ideal for motocross, enduro, or trail riding where maneuverability is key.
2. **High-Quality Components**
KTM is known for using premium parts, including:- **Engine:** The 2-stroke motor is reliable, torque-rich, and designed for high RPM performance, which is great for aggressive riding.
- **Suspension:** The WP suspension system (front and rear) is adjustable and durable, allowing for fine-tuning to different terrains.
- **Brakes:** The hydraulic disc brakes (front and rear) provide strong stopping power, which is rare in budget-friendly 2-stroke bikes.
- **Exhaust:** The high-flow exhaust enhances power delivery, making the bike more fun to ride.
3. **Modular and Upgradable**
The KTM 2-stroke platform is highly customizable. Owners can easily upgrade:- **Engine:** Swap in a larger bore kit (e.g., 300cc from a 250cc) or aftermarket parts for more power.
- **Suspension:** Replace shocks and forks with aftermarket units (e.g., hlins, Renthal) for better performance.
- **Exhaust:** Aftermarket headers and mufflers can improve throttle response and sound.
- **Wheels/Tires:** Upgrading to lighter wheels or specialized tires (e.g., Maxxis or Michelin) can improve handling.
4. **Strong Resale Value**
KTM 2-stroke bikes hold their value reasonably well, especially if well-maintained. The aftermarket support also keeps demand high.
5. **Off-Road Dominance**
The bike s design is optimized for dirt tracks, with features like:- **Low center of gravity** for stability.
- **Wide tire clearance** for aggressive riding.
- **Durable protection** (skid plates, chain guard) for rough terrain.
6. **Community and Support**
KTM has a large and active off-road community, meaning parts, tuning guides, and modifications are widely available. Forums (e.g., KTM Forum, Reddit) are useful for troubleshooting and advice.
7. **Fuel Efficiency (Compared to 4-Strokes)**
While 2-strokes are less efficient than modern 4-strokes, they still offer better mileage in short bursts, which is useful for track days or short rides.
---
#### **Cons**
1. **High Maintenance Requirements**
2-stroke engines require **frequent maintenance**, including:- **Oil mixing** (pre-mix or oil injection, depending on model) every fill-up.
- **Regular valve adjustments** (every 5 10 hours, depending on use).
- **More wear on piston rings, cylinders, and crankshaft** compared to 4-strokes.
- **Cooling system checks** (air-cooled engines can overheat if not maintained).
This makes long-term ownership more labor-intensive and costly.
2. **Environmental Concerns**
2-strokes are **less eco-friendly** due to higher emissions (unburnt fuel and oil) compared to modern 4-stroke bikes. If you ride in areas with strict emissions laws, you may face restrictions.
3. **Limited Fuel Range**
The smaller fuel tank (typically 2.6 3.6 liters) means shorter rides between refuels, which can be inconvenient for long-distance enduro or trail riding.
4. **Less Torque at Low RPM**
While 2-strokes are fun and responsive, they **peak quickly** and lose power if you don t keep the engine in the sweet spot. This can make them less forgiving for beginners or casual riders who aren t used to aggressive throttle control.
5. **Higher Cost of Ownership Over Time**
- **Parts:** While initial cost may be lower, 2-stroke engines wear out faster than 4-strokes, leading to more frequent repairs (e.g., piston replacements, crankshaft grinding).
- **Fuel/Oil:** Requires more frequent oil mixing or oil injection system maintenance.
- **Insurance:** Some insurers charge higher premiums for 2-stroke bikes due to perceived higher risk.
6. **Less Comfortable for Long Rides**
The aggressive, sporty stance and lack of wind protection make these bikes **less suitable for long-distance touring or highway riding**. They are built for **aggressive off-road use**, not comfort.
7. **Discontinued Models**
KTM has shifted focus to **4-stroke engines** (e.g., 250/300/450cc models) in recent years, meaning:- **Limited aftermarket support** compared to older 2-stroke models.
- **Harder to find replacement parts** for rare components.
- **No official updates or new model releases**, which could affect long-term reliability.
8. **Learning Curve for Beginners**
The **aggressive nature** of 2-strokes (high RPM, quick power delivery) can be intimidating for new riders. They require more skill to handle safely, especially on technical trails.
---
### **Conclusion and Recommendation**
#### **Who Should Buy This Bike?**
- **Experienced off-road riders** who prioritize **fun, power, and agility** over comfort.
- **Motocross/enduro racers** or those who enjoy **track days** and aggressive riding.
- **Bikers who enjoy tinkering** and don t mind **high maintenance**.
- **Those who want a bike with strong aftermarket support** and customization potential.
- **Budget-conscious buyers** who are okay with **higher long-term costs** for the thrill of a 2-stroke.
#### **Who Should Avoid This Bike?**
- **Beginners** who are still learning handling skills.
- **Casual riders** who prefer **low maintenance** and **comfort**.
- **Those who ride mostly on pavement** (4-strokes are better for highway use).
- **Environmentally conscious buyers** who want cleaner emissions.
- **People who dislike frequent maintenance** (oil mixing, valve adjustments, etc.).
#### **Final Recommendation**
If you re **passionate about off-road riding, enjoy the challenge of a 2-stroke, and are prepared for the maintenance**, the **KTM 250cc/300cc 2-stroke (2017 2019) with the 55603101000EB frame** is an **excellent choice** especially if you plan to modify it for better performance. The bike s **lightweight, powerful engine, and strong aftermarket support** make it a favorite among dirt riders.
However, if you re **new to off-roading, prioritize comfort, or want a bike that s easier to maintain**, consider a **modern 4-stroke KTM (e.g., 250/300/450cc) or a used 4-stroke dirt bike** instead.
**Best for:** Aggressive riders who want a **fun, high-performance off-road machine** and don t mind the extra work.
**Avoid if:** You prefer **low maintenance, comfort, or highway riding**.
Comes with the papers shown in photos. I'll do my best to offset mistakes, and in most cases I ll whatever you think is fair. If I've made a mistake, shipping costs are on me. There are some dings on the lower frame rails, I've taken close ups for you.
CONDITION - Good used frame. If you contact me I can guarantee fit. Special model's may have exceptions. Please or message me with any concern.
Please double check fit by part number or message me. I'm happy to help you figure out if this will work for you, just send me a message. This will fit Two-stroke TPI KTM 250 and 300 but could also be used for a carburetors or as well on carb bikes, you wouldn't use the oil tank provisions. Please review the pics and assess condition for yourself as well, see in.
Message me for any questions. This was never in my name. This is a good used main frame from 2019 KTM 250 XCW TPI. Contact me for a shipping quote to AK, HI, or PR.
Although I do my best to describe accurately, I m human, sometimes miss something.