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  2. sku: 17677990989241711
  3. HONDA 50100-331-771B

HONDA 50100-331-771B Frame

fits model: Sl125, K1, K2, Sl100, K3. make: Honda. year: 1972.

50100-331-771b Honda 1972 Sl125 K1 K2 Sl100 K3 Black Frame #50100-331-771b

( Manufacturer Part Number: 50100-331-771B ), ( Part Type: Frame ), ( Color: Black ), ( Vintage Part: Yes ), ( Country Of Origin: Japan )

Review HONDA Black Frame #50100-331-771b fits SL125 K1 K2 SL100 K3 1972

The **Honda 50100-331-771B** is a meticulously crafted replacement frame for the legendary **1972 Honda SL125 K1, K2, and SL100 K3** models, a rare and highly sought-after piece of motorcycle history. This frame is a direct, high-quality reproduction designed to restore the structural integrity and classic aesthetics of these iconic streetfighters, which were among the first mass-produced sport bikes to revolutionize the motorcycle industry in the early 1970s. Crafted from durable, high-grade steel, the frame embodies the same engineering precision that made Honda a pioneer in lightweight, high-performance machinery, ensuring both reliability and a near-identical fit to the original. The **SL125 K-series** and **SL100 K3** were groundbreaking in their day, featuring a radical, aggressive design with a low-slung, aggressive stance, a single-cylinder engine, and a minimalist yet functional build that appealed to riders seeking speed and simplicity. The **50100-331-771B** frame is essential for enthusiasts looking to preserve or revive these bikes, as it replicates the intricate welds, precise dimensions, and subtle contours that define the original s timeless appeal. Whether restoring a rare collector s item or maintaining a cherished project bike, this frame is a testament to Honda s legacy of innovation and craftsmanship, offering a perfect blend of authenticity and modern durability for riders who appreciate both history and performance.

### **Pros and Cons of Buying a 1972 Honda SL125 (K1/K2) or SL100 (K3) with Frame Part #50100-331-771B**

#### **Pros**

1. **Classic Design and Nostalgia**

The SL125 and SL100 are iconic mopeds from the early 1970s, known for their simple, retro styling. They hold a strong appeal for collectors and enthusiasts who appreciate vintage motorcycles.

2. **Reliability and Simplicity**

These mopeds were built with straightforward mechanics, making them easier to repair than modern bikes. The engine is a basic air-cooled single-cylinder unit, which is durable if maintained properly.

3. **Low Cost of Ownership**

Parts for these mopeds are relatively inexpensive compared to modern bikes. Since they are no longer in production, aftermarket support exists, though it may be limited.

4. **Fuel Efficiency**

The SL125 and SL100 are known for their excellent fuel economy, often averaging 100 miles per gallon, making them cost-effective for short commutes or casual riding.

5. **Lightweight and Maneuverable**

These bikes are small and easy to handle, ideal for urban riding or parking in tight spaces.

6. **Potential for Restoration**

If the bike is in rough condition, restoring it can be a rewarding project. Many owners enjoy bringing these mopeds back to their original glory.

7. **Low Insurance Costs**

Since they are low-powered and rarely used on modern roads, insurance is typically very affordable.

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#### **Cons**

1. **Age and Wear**

A 1972 model is over 50 years old, meaning the frame, engine, and components may be worn out or in need of significant repair. Rust, worn bearings, and degraded rubber parts are common issues.

2. **Limited Modern Compatibility**

Many modern components (e.g., tires, brakes, electrical systems) may not fit or be compatible without modifications. Aftermarket parts may be scarce or require custom fabrication.

3. **Safety Concerns**

These mopeds lack modern safety features such as ABS, traction control, or advanced braking systems. They also have minimal protection in a crash, making them unsafe for high-speed riding.

4. **Regulatory and Legal Issues**

Some jurisdictions have strict regulations on vintage bikes, including emissions standards, lighting requirements, or registration restrictions. You may need to modify the bike to comply with local laws.

5. **Reliability Risks**

While simple, the lack of modern engineering means parts like the carburetor, clutch, and transmission may fail unpredictably. Regular maintenance is essential, but even then, long-term reliability is questionable.

6. **Resale Value**

These mopeds are not investments they depreciate quickly. If you plan to sell later, you may not recover much of your initial cost.

7. **Limited Performance**

The SL125 and SL100 are slow by modern standards, with top speeds around 40-50 mph. They are not suitable for highway use in most places.

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### **Conclusion**

Buying a 1972 Honda SL125 (K1/K2) or SL100 (K3) with the specified frame is a great choice if you:

- Enjoy vintage motorcycles and appreciate their historical value.

- Are willing to invest time in maintenance or restoration.

- Plan to use it for casual, low-speed riding (e.g., urban commuting, leisurely rides).

- Have a budget for potential repairs and part replacements.

However, if you prioritize reliability, safety, and modern functionality, this bike may not be the best long-term investment. It is better suited for enthusiasts who value the experience of owning a piece of motorcycle history rather than practical daily use.

### **Recommendation**

- **Buy if:** You are a collector, restorer, or someone who simply loves the aesthetic and charm of these mopeds. Ensure you have the skills or access to mechanics experienced with vintage Hondas.

- **Avoid if:** You need a reliable, safe, and low-maintenance bike for daily use. Consider a modern moped or a well-maintained vintage bike with a proven service history instead.

- **Alternative Approach:** If you want a similar experience with better reliability, look for a later-model Honda moped (e.g., SL125 from the 1980s) or a restored example with a complete service history.

Ultimately, this bike is a fun project but not a practical choice for most modern riders.

Details:

part #: 50100331771b price

  • $200.00

specifications mocycfra:

  • for models: Sl125, K1, K2, Sl100, K3
  • for makes: Honda
  • for years: 1972
  • mpn: 50100-331-771b
  • part type: Frame
  • color: Black
  • vintage part: Yes
  • country of origin: Japan

shipping mocycfra:

  • carrier: USPS
  • transit: 3-7 Days
  • cost: $0.00
  • type: Calculated
  • class: Standard
  • service: USPS Ground Advantage

payments mocycfra:

  • other
  • wallet: Apple-pay
  • credit card: Discover

offer mocycfra:

  • sold: 0
  • availability: In Stock
  • best offers: True
  • options: Ship-to-home
  • started: April 14, 2026
  • quantity: 1

general mocycfra:

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

seller mocycfra:

  • # reviews: 3321
  • city: Spokane, Washington
  • rating: 100.0%

returns mocycfra:

  • time: 30 Days
  • paid by: Seller
  • policy: Returns Accepted
for models: sl125, k1, k2, sl100, k3, for makes: honda, for years: 1972, part type: frame, vintage part: yes, country of origin: japan,
category: motorcycle parts > motorcycle scooter parts accessories > body frame > frames parts, color: black, sku: 17677990989241711,
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