HARLEY-DAVIDSON 1HD1BMY103Y051490 Frame Chassis Straight Cln 47014-03

( Brand: Harley-davidson ), ( Manufacturer Part Number: 1HD1BMY103Y051490 ), ( Type: Frame Main Frame ), ( Country Of Origin: United States ), ( Color: Black ), ( Manufacturer Warranty: Unspecified Length ), ( Placement On Vehicle: Center ), ( Storage Location: Z.8.a.1 Y051490-c ), ( Custom1: 210709 ), ( Finish: Painted ), ( Material: Metal ), ( Machine Type: Street Motorcycle ), ( Vintage Part: No ), ( Oe/oem Part Number: 47014-03 )

Review HARLEY DAVIDSON Main Frame Chassis Straight Cln fits FAT BOY FLSTF 2000–2006

The **Harley-Davidson 1HD1BMY103Y051490 (2000-2006 FLSTF Fat Boy)** represents a legendary fusion of raw power, timeless design, and unmatched comfort, embodying the spirit of American motorcycle engineering at its finest. Built upon a **straight chassis** (designated as "CLN" for Clean, indicating a simplified, non-injected engine configuration), this iconic model features a **1,449cc Evolution V-twin engine**, a powerplant renowned for its deep-throated growl and effortless torque delivery. The **1HD1BMY** designation in the frame number signifies its place within Harley-Davidson s legendary lineup, while the **00-06** production range marks a transitional era where the Fat Boy evolved from a bold concept into a refined classic, blending the brute strength of its predecessors with smoother ergonomics and a more approachable riding position.

At the heart of the Fat Boy s allure is its **bold, aggressive styling**, characterized by a **low-slung, wide stance** that commands attention on the road. The **massive 21-inch front wheel** and **18-inch rear wheel** create a commanding presence, while the **dual-swingarm suspension** delivers a plush, cushioned ride that absorbs imperfections with ease. The **air-cooled V-twin** roars to life with a throaty, unmistakable tone, its **single camshaft and pushrod actuation** lending a mechanical purity that enthusiasts cherish. Though the **CLN model lacks fuel injection**, its **carbureted intake system** (typically featuring a pair of Amal or Mikuni carburetors) produces a rich, intoxicating exhaust note that resonates with purists who appreciate the raw mechanics of classic Harley-Davidson engineering.

The **frame chassis** of the 2000-2006 Fat Boy is a study in balance **steel construction** ensures durability, while the **dual-cradle design** provides rigidity without sacrificing comfort. The **saddle-style seat** is generously padded, inviting long rides with minimal fatigue, and the **upright riding position** allows for effortless handling, whether cruising down a highway or navigating winding backroads. The **full fairing** (including a **windshield, sissy bar, and rear rack**) enhances aerodynamics while offering practical storage, though the Fat Boy s true charm lies in its **unapologetic, no-nonsense attitude** a motorcycle that doesn t just ride but *commands* the road.

Underneath the polished chrome and rugged styling, the **FLSTF Fat Boy** is a machine of contradictions **heavy yet nimble, powerful yet forgiving**. The **hydraulic front disc brakes** (with dual 280mm rotors) provide reliable stopping power, while the **rear drum brake** (on early models) or **disc brake** (on later iterations) ensures stability. The **conventional gearbox** (with a **5-speed transmission**) offers smooth, predictable shifts, and the **chain final drive** delivers raw, unfiltered power to the rear wheel. Whether cruising at a leisurely pace or rolling through a twisty mountain pass, the Fat Boy s **torque-heavy performance** makes it a joy to ride, its **low-end grunt** ensuring effortless acceleration even at slower speeds.

For collectors and enthusiasts, the **2000-2006 Fat Boy** holds a special place in Harley-Davidson s legacy, bridging the gap between the **bold experimentation of the '90s** and the **refined sophistication of later models**. Its **distinctive "Fat Boy" badge**, **wide handlebars**, and **bold exhaust pipes** make it instantly recognizable, while its **durable build quality** ensures it remains a reliable companion for decades. Whether restored to showroom shine or left with a weathered, lived-in patina, this motorcycle is more than just a machine it s a **symbol of freedom, rebellion, and the open road**, a testament to Harley-Davidson s enduring ability to craft bikes that inspire devotion in their riders.

### **Pros and Cons of Buying a Harley-Davidson 1HD1BMY103Y051490 (2000-2006 FLSTF "Fat Boy")**

#### **Pros**

1. **Classic V-Twin Power**

The Fat Boy is powered by Harley s iconic **Evo V-twin engine (1203cc)**, which is reliable and known for its deep, growling exhaust note. It produces around **80-90 HP**, making it a smooth, torquey cruiser that s enjoyable for both city and highway riding.

2. **Comfortable Ergonomics**

The Fat Boy was designed with rider comfort in mind. Its **upright riding position**, **wide, plush seat**, and **high handlebars** reduce strain on the back and wrists compared to lower-slung cruisers. The **long wheelbase** and **suspension tuning** (adjustable forks on some models) provide a stable, smooth ride.

3. **Timeless Aesthetic**

The Fat Boy s **bold, rounded styling** from the early 2000s gives it a **distinctive, retro-modern look** that stands out on the road. Its **chrome accents, wide fenders, and aggressive front end** make it a head-turner.

4. **Modularity & Customization Potential**

The FLSTF platform is one of Harley s most **modular**, meaning parts from other models (e.g., Softails, Sportsters) can often be swapped in. This makes upgrades like **exhaust systems, suspension, or engine swaps** relatively straightforward. Aftermarket support is extensive, with options ranging from **tune kits to full custom builds**.

5. **Durability & Proven Reliability**

The **Evo engine** is known for its **longevity**, especially with proper maintenance. Many Fat Boys from this era have **200,000 miles** on them with basic upkeep. The **transmission (5-speed manual)** is simple and robust, though some riders prefer modern automatics.

6. **Sound & Atmosphere**

The Fat Boy s **deep, resonant exhaust note** (especially with stock or mild aftermarket exhausts) is one of its strongest selling points. The **air-cooled engine** also contributes to a **classic Harley experience** that appeals to purists.

7. **Resale Value & Community**

As a **classic Harley model**, the Fat Boy holds its value reasonably well, especially in good condition. There s also a **strong aftermarket and owner community**, making parts, repairs, and modifications easier to find.

---

#### **Cons**

1. **Outdated Technology**

- **No traction control or ABS** (standard on most modern cruisers).

- **Basic electronics** (early models had **no speedometer calibration or fuel injection tuning**).

- **Poor fuel economy** ( **MPG: 35-45 city, 50-60 highway**).

- **No Bluetooth, cruise control, or advanced rider aids** (though aftermarket solutions exist).

2. **Maintenance & Wear Issues**

- **Air-cooled engines** require **more frequent cooling system checks** (radiator, fans, thermostats) compared to liquid-cooled modern bikes.

- **Belt drive (on some models)** can stretch over time, leading to **slippage and reduced power delivery**.

- **Suspension wear** (shocks, springs) is common after **50,000 miles**, requiring upgrades for a smooth ride.

- **Brake system limitations** early Fat Boys had **basic drum or single-disc brakes**, which are less effective than modern dual-disc setups.

3. **Weight & Handling**

- The Fat Boy is **heavy ( 700-750 lbs fully loaded)**, making it **less nimble** than modern cruisers or sportbikes.

- **Steering is sluggish** compared to lighter bikes, and **cornering can feel stiff** without suspension upgrades.

- **Tire wear** is common due to the **wide, soft tires** (modern radials or aftermarket tires improve this).

4. **Rust & Corrosion Risks**

- Many early 2000s Harleys suffer from **rust in the frame, swingarm, and exhaust** if not properly maintained. **Salt exposure** (if ridden in winter) accelerates this.

- **Underseat rust** is a common issue check for **corrosion in the frame rails and fuel tank mounts**.

5. **Engine & Transmission Limitations**

- The **Evo engine is not as powerful as modern Harley V-twins** (e.g., **Milwaukee-Eight** or **Iron 883**), which can feel **underpowered by today s standards**.

- **Manual transmission** is **less refined** than modern automatics (e.g., **Power Glide or DCT**), making highway cruising less effortless.

- **Throttle response** can be **sluggish** compared to modern fuel-injected engines.

6. **Fuel & Emissions Concerns**

- **Older Harleys run on lower-octane fuel** (87-89), which can cause **detonation** if not properly tuned.

- **No OBD-II or modern diagnostics** troubleshooting issues requires **more mechanical knowledge**.

- **Smog regulations** may affect resale or riding in some states (though many states have **grandfathered** older bikes).

7. **Parts & Repair Costs**

- **New OEM parts can be expensive**, especially for **exhaust, suspension, or electrical components**.

- **Aftermarket parts are widely available**, but **quality varies**, and some modifications may void warranties (if any remain).

- **Labor costs** add up if major work (e.g., **valve jobs, frame repairs**) is needed.

8. **Safety & Modern Standards**

- **No ABS or traction control** increases the risk of **skidding on wet roads**.

- **Visibility is limited** due to the **tall, rounded fairing**, which can make it harder for drivers to see the bike.

- **Wind noise and buffeting** at highway speeds can be **uncomfortable** without a full fairing.

---

### **Conclusion**

The **2000-2006 Harley-Davidson Fat Boy (FLSTF)** is a **fantastic choice for riders who prioritize classic Harley styling, comfort, and a raw, unfiltered riding experience**. It s a **great project bike for enthusiasts** who enjoy **modifying and maintaining** their own machine, as well as those who appreciate **vintage cruiser aesthetics**.

However, it s **not ideal for riders who want modern technology, fuel efficiency, or ease of use**. The **lack of ABS, traction control, and refined electronics** makes it less safe and convenient than contemporary cruisers. Additionally, **maintenance costs and potential rust issues** require **proactive care** to keep the bike in good condition.

If you re **looking for a daily rider with modern comforts**, a **newer Harley (e.g., 2015 Fat Boy with ABS, Milwaukee-Eight engine, or a Softail Deluxe)** would be a better choice. But if you **love the Fat Boy s character, sound, and build quality**, and are willing to **invest time and money in upkeep**, it remains a **timeless and rewarding ride**.

---

### **Recommendation**

You **prioritize vintage Harley charm** and don t mind its **outdated tech**.

You **plan to modify it** (exhaust, suspension, electronics) to modern standards.

You **have mechanical experience** or access to a **Harley-savvy mechanic**.

You **ride mostly in fair weather** and won t push it hard on highways.

You **enjoy the community** and want a **project bike** with strong aftermarket support.

You **need modern safety features** (ABS, traction control).

You **want fuel efficiency or low maintenance**.

You **don t like manual transmissions** or **sluggish throttle response**.

You **plan to ride in harsh climates** (salt, rain) without **proactive rust prevention**.

You **prefer a plug-and-play experience** with minimal upkeep.

- **2007 Fat Boy (with ABS & Milwaukee-Eight engine)** More modern but still retains Fat Boy character.

- **Harley-Davidson Softail Deluxe** More refined handling and modern tech while keeping cruiser comfort.

- **Used 2010 Harley (e.g., Road Glide, Street Glide)** Better safety features, fuel economy, and electronics.

The **2000-2006 Fat Boy is a fantastic bike for the right rider** one who **values tradition, sound, and customization over modern convenience**. If you re prepared for **some maintenance and upgrades**, it s a **great investment in a piece of Harley history**. However, if you want **a hass

Details:

Fits 2000 2006 Harley-Davidson Softail model's including Fat Boy FLSTF, Heritage FLSTC, and Night Train FXSTB. Main Frame - Straight chassis assembly with integrated rear fender support sections. 00-06 Harley Davidson Fat Boy FLSTF Inner Motor Oil Pump 26290-99B. OEM 47014-03.

Part is off a 2003 Harley Davidson FLSTF Fanboy, Watch Video of this Unit - YouTube. Structurally sound, black painted finish with normal signs of use and minor surface wear.

part #: 1hd1bmy103y051490 prices

• $801.00-$899.00

specifications mocycfra:

• for models: Flstf, Fat, Boy
• for makes: Harley
• for years: 2000-2006
• brand: Harley-davidson
• mpn: 1hd1bmy103y051490
• type: Frame Main Frame
• country of origin: United States
• color: Black
• manufacturer warranty: Unspecified Length
• placement on vehicle: Center
• storage location: Z.8.a.1 Y051490-c
• custom1: 210709
• finish: Painted
• material: Metal
• machine type: Street Motorcycle
• vintage part: No
• oe/oem part number: 47014-03

shipping mocycfra:

• service: Flat Rate Freight
• cost: $0.00
• type: Fixed
• class: Freight

general mocycfra:

• Motorcycle Scooter Parts Accessories > Body Frame > Frames Parts
• condition: Used

offer mocycfra:

• quantity: 1
• availability: In Stock
• options: Ship-to-home
• started: March 13, 2026
• sold: 0

payments mocycfra:

• other
• wallet: Google-pay
• credit card: Mastercard

returns mocycfra:

• time: 30 Days
• paid by: Buyer
• policy: Returns Accepted

seller mocycfra:

• # reviews: 215302
• rating: 99.3%
• city: Odessa, Florida

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