1. Antique, Vintage, Historic Motorcycle Parts For Sale
  2. sku: 21488679614358603
  3. HARLEY DAVIDSON 24545-59

HARLEY-DAVIDSON 24545-59 Topper Scooter Engine

fits make: Harley.

24545-59 Harley-davidson Topper Scooter Engine Cases

( Brand: Harley-davidson ), ( Manufacturer Part Number: 24545-59 ), ( Part Type: Engine Case )

Review HARLEY DAVIDSON Topper Scooter Engine Cases

The **Harley-Davidson 24545-59 Topper Scooter Engine** is a meticulously engineered, high-performance powerplant designed to deliver the unmistakable Harley-Davidson experience with the practicality of a modern scooter. Built with the brand s signature craftsmanship, this air-cooled, single-cylinder engine is a testament to Harley s legacy of bold, reliable, and thrilling motorcycles, now adapted for urban mobility. The engine features a **49cc displacement**, producing a smooth yet spirited 2.5 horsepower and a torque-rich 2.2 lb-ft, making it ideal for effortless acceleration and responsive handling in stop-and-go traffic or leisurely rides. Its compact yet robust design incorporates a **throttle-by-wire system**, allowing for precise and intuitive control, while the **automatic clutch** ensures seamless gear transitions, eliminating the need for manual shifting. The engine is paired with Harley s signature **V-twin-inspired styling cues**, including a bold, angular exhaust header and a distinctive air intake, blending the brand s iconic aesthetic with the convenience of a scooter platform.

Under the hood, the Topper engine showcases Harley-Davidson s commitment to durability and ease of maintenance. The **oil-cooled cylinder head** and **cast-iron cylinder sleeve** ensure long-lasting performance, while the **self-starting electric starter** eliminates the hassle of kickstarting, making it user-friendly for riders of all experience levels. The engine s **automatic transmission** operates silently and smoothly, with a single gear for effortless cruising, while the **step-through frame** and **foldable handlebars** enhance maneuverability in tight urban spaces. Whether navigating city streets, commuting to work, or simply enjoying a leisurely ride, the Topper engine delivers a harmonious blend of Harley-Davidson s legendary power and the practicality of a modern scooter, making it a standout choice for riders who demand both style and substance.

### **Pros and Cons of Buying a Harley-Davidson 24545-59 Topper Scooter Engine**

The **Harley-Davidson 24545-59 Topper scooter engine** is a 50cc single-cylinder air-cooled unit originally designed for the **Harley-Davidson Topper scooter** (produced in the 1960s). While it s a classic piece of motorcycle history, its modern-day practicality is limited. Below are its key advantages and disadvantages.

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### **Pros**

1. **Historical Significance and Nostalgia**

The Topper engine is a rare and collectible piece of Harley-Davidson s early scooter history. Enthusiasts and vintage motorcycle collectors may value it for its rarity and cultural appeal.

2. **Simple and Reliable Design**

Like many older Harley engines, this unit is mechanically straightforward, with few complex components. This can make it easier to repair or modify for those familiar with basic engine work.

3. **Potential for Restoration or Customization**

If you re restoring a vintage Topper or building a custom scooter, this engine could be a unique centerpiece. Its compact size and distinctive styling might appeal to those crafting one-off projects.

4. **Low Power Output (If That s Desired)**

At 50cc, it produces minimal power around **1.5 2 horsepower** making it suitable for very light-duty use, such as a stationary display piece or a slow-moving novelty vehicle.

5. **Availability of Parts (Limited but Possible)**

While not widely available, some aftermarket suppliers and vintage motorcycle parts dealers may carry components for the Topper engine. Harley-Davidson s original parts may be scarce, but third-party vendors occasionally stock them.

6. **Potential for Educational Value**

For someone learning about motorcycle mechanics, disassembling and studying this engine could provide hands-on experience with older engine designs.

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### **Cons**

1. **Extremely Limited Modern Practicality**

The Topper engine is **not designed for serious riding**. Its low power, lack of modern emissions compliance, and outdated technology make it impractical for daily use or even reliable off-road applications.

2. **No Modern Support or Warranty**

Harley-Davidson no longer produces or supports this engine. There are no official manuals, service bulletins, or warranty coverage. Any repairs would require self-reliance or reliance on third-party mechanics with vintage expertise.

3. **Emissions and Legal Restrictions**

A 50cc air-cooled engine from the 1960s would **fail modern emissions standards** in most countries. Even if registered as a vintage vehicle, it may require modifications (such as catalytic converters or electronic fuel injection) to comply with local laws, which could be costly and impractical.

4. **Fuel Efficiency is Poor by Modern Standards**

While 50cc engines are generally fuel-efficient, the Topper s outdated carburetion and lack of modern fuel injection mean it will likely consume fuel inefficiently compared to contemporary scooters.

5. **Reliability Concerns**

Like all vintage engines, this unit may suffer from **wear and tear over time**, including issues with:

- **Carburetion** (vapor lock, clogging)

- **Ignition system** (points, condenser, or distributor wear)

- **Cooling** (air-cooled systems can overheat if not maintained)

- **Transmission and clutch** (if the scooter retains its original drivetrain)

Without modern materials and manufacturing standards, long-term reliability is questionable.

6. **High Cost of Ownership**

- **Parts**: Replacement parts (even basic ones like spark plugs or belts) may be expensive or hard to find.

- **Labor**: Specialized mechanics familiar with vintage Harley scooters are rare, increasing repair costs.

- **Storage and Transport**: A Topper engine or scooter is bulky and may require careful handling to avoid damage.

7. **No Modern Safety Features**

The Topper lacks features like **disc brakes, ABS, or modern ergonomics**, making it unsafe for anything beyond very light or stationary use.

8. **Market Value is Low (Unless as a Collector s Item)**

While rare, the Topper engine is not a valuable investment. Most buyers would only pay a modest sum for it enough to cover parts and labor for a restoration, but not enough to justify significant investment.

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### **Conclusion and Recommendation**

The **Harley-Davidson 24545-59 Topper scooter engine** is a fascinating piece of automotive history, but its practical value in the modern era is **severely limited**. It is best suited for:

- **Vintage motorcycle collectors** who appreciate Harley-Davidson s early scooter experiments.

- **Restoration projects** where the engine serves as a unique, nostalgic component (e.g., a static display or a one-off custom build).

- **Mechanics or hobbyists** interested in studying or repairing vintage engines for educational purposes.

**For anyone seeking a functional, legal, and reliable scooter or engine today, this is not a practical choice.** Modern 50cc scooters (such as those from Honda, Yamaha, or Vespa) offer better performance, compliance with emissions laws, and far greater reliability at a fraction of the hassle.

**If you still wish to acquire this engine:**

- **Buy it as a hobbyist project** rather than an investment.

- **Budget for potential restoration costs** expect to spend significantly more than the engine s purchase price on parts and labor.

- **Consider a modern 50cc scooter** if you need a functional, legal, and maintainable vehicle.

In summary: **Buy for nostalgia or restoration, not for practical use.**

Details:

Good used part #24545-59.

part #: 2454559 price

  • $175.00

specifications cyclevintagee:

  • for makes: Harley
  • brand: Harley-davidson
  • mpn: 24545-59
  • part type: Engine Case

returns cyclevintagee:

  • policy: No Returns

seller cyclevintagee:

  • # reviews: 2025
  • city: Northport, New York
  • rating: 99.3%

offer cyclevintagee:

  • options: Ship-to-home
  • best offers: True
  • availability: In Stock
  • sold: 0
  • started: March 31, 2026
  • quantity: 1

general cyclevintagee:

  • Parts Accessories > Motorcycle Scooter Parts Accessories > Other Motorcycle Scooter Parts Accessories
  • condition: Used

payments cyclevintagee:

  • credit card: Diners-club
  • wallet: Apple-pay
  • other

shipping cyclevintagee:

  • transit: 3-8 Days
  • type: Fixed
  • cost: $10.00
  • class: Standard
  • carrier: USPS
  • service: USPS Ground Advantage
for makes: harley, part type: engine case,
category: motorcycle parts > motorcycle scooter parts accessories, sku: 21488679614358603,
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1 offer $175.00 USD
  • Used. Offer #1 priced at $175.00 + $10.00 shipping estimate = $185.00* total. Good used part # .+$10.00 shipping

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