YAMAHA 248-11311-00-00 Cylinder Jug Barrel AT125

( Part Type: Cylinder ), ( Machine Type: Dual Sport Motorcycle ), ( Color: Silver ), ( Material: Aluminum, Steel ), ( Vintage Part: Yes ), ( Country Of Origin: Japan ), ( UPC: 248113110000 )

Review YAMAHA Oem Cylinder Jug Barrel fits AT1 CT1 125 1969–1971

The **Yamaha AT1 125 CT1 cylinder barrel from model years 1969 to 1971 (part number 248-11311-00-00)** is a meticulously crafted component that embodies the classic engineering and performance legacy of Yamaha s early streetfighter motorcycles. Designed for the iconic AT1 125, this cylinder barrel represents a pivotal era when Yamaha revolutionized the lightweight, high-revving single-cylinder market with its precision machining and lightweight construction. Crafted from high-grade cast iron, the barrel features a smooth, polished bore that ensures optimal piston sealing and minimal friction, allowing the AT1 s air-cooled 125cc engine to deliver its signature snappy throttle response and exhilarating high-revving character. The barrel s compact yet robust design, with its integrated piston cooling fins and precise cylinder head alignment, contributes to the AT1 s legendary reliability and efficiency, making it a favorite among enthusiasts who appreciate both raw performance and timeless simplicity. Whether restoring a vintage AT1 to its original glory or upgrading an existing engine for enhanced performance, this cylinder barrel is a critical, high-quality replacement that maintains the integrity of Yamaha s engineering philosophy from the late 1960s and early 1970s. Its compatibility with the CT1 cylinder head ensures a seamless fit, while its durable construction reinforced by Yamaha s attention to detail makes it a dependable choice for riders seeking to preserve or revive the spirit of this legendary motorcycle.

### Yamaha AT1 125 (CT1 Cylinder, 1969 1971 Barrel) Pros and Cons

#### **Pros**

1. **Classic Design and Aesthetics** The AT1 125 is a timeless motorcycle with a simple, elegant design that appeals to enthusiasts of vintage and classic bikes. Its clean lines and minimalist styling make it visually striking, especially in its original condition.

2. **Reliability and Simplicity** Yamaha built this bike with durability in mind. The single-cylinder engine is straightforward, with fewer components than modern bikes, making it easier to maintain and repair. Many parts are still available, and the mechanical design is robust for its era.

3. **Lightweight and Maneuverable** Weighing around 110 120 kg (depending on condition), the AT1 125 is easy to handle, making it ideal for urban commuting, short trips, or casual riding. Its small size also makes it practical for parking and storage.

4. **Affordable Running Costs** Fuel efficiency is excellent for a bike of this size, typically averaging around 50 60 km/liter. Maintenance costs are low compared to modern bikes, especially if you perform basic upkeep yourself.

5. **Nostalgic Appeal** For collectors and riders who appreciate vintage motorcycles, the AT1 125 holds sentimental value. It represents an era of motorcycle design that many find charming, and owning one can be a passion project.

6. **Modification Potential** While not as heavily modified as modern bikes, the AT1 125 can be tuned for better performance. Upgrades like carburetor adjustments, exhaust modifications, or engine rebuilds can enhance power and throttle response.

7. **Low Speed Stability** The low center of gravity and simple suspension make it stable at low speeds, which is useful for city riding or when navigating tight spaces.

8. **Resale Value for Classics** If well-maintained, an AT1 125 can retain value over time, especially if it s part of a sought-after model year (e.g., 1970 1971). Some collectors pay premium prices for restored examples.

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#### **Cons**

1. **Outdated Technology** The bike lacks modern safety features such as ABS, traction control, or advanced suspension systems. Riding conditions, especially on rough roads or in adverse weather, may feel less comfortable than on contemporary bikes.

2. **Poor High-Speed Stability** The AT1 125 is not designed for high-speed cruising. At speeds above 100 120 km/h, it can become unstable due to its lightweight frame and lack of modern aerodynamics. Wind resistance and handling degrade significantly at higher speeds.

3. **Limited Power and Performance** The 125cc single-cylinder engine produces around 8 10 horsepower, which is sufficient for light urban use but inadequate for highway riding or carrying heavy loads. Acceleration is modest, and passing larger vehicles can be challenging.

4. **Comfort Limitations** The ergonomics are basic by modern standards. The seat is often hard, the handlebars may be too low or high for some riders, and the lack of wind protection makes long rides uncomfortable. Modern bikes offer better adjustability and rider positioning.

5. **Maintenance Challenges** While the engine is simple, some components (e.g., old carburetors, wiring, or seals) may require frequent attention. Rust, worn-out parts, or lack of modern tools can make repairs time-consuming.

6. **Legal Restrictions in Some Regions** In certain countries, 125cc bikes may have speed limits (e.g., 45 km/h in some European regions) or require additional licensing, depending on local laws. Always check local regulations before purchasing.

7. **Limited Aftermarket Support** Compared to modern bikes, finding specialized parts or aftermarket accessories (e.g., modern brakes, suspension, or fairings) can be difficult. Many upgrades require custom fabrication.

8. **Fuel and Emissions Compliance** Older bikes may not meet modern emissions standards in some areas, requiring modifications or limiting where you can ride. In some cities, they may be restricted from certain zones.

9. **Weather Vulnerability** Without modern weather protection (e.g., windshields, heated grips), riding in rain, wind, or cold temperatures can be uncomfortable or even dangerous.

10. **Insurance and Registration Costs** Classic or vintage bikes often have higher insurance premiums due to their value and limited parts availability. Registration fees may also be higher than for modern bikes.

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### **Conclusion**

The Yamaha AT1 125 (1969 1971) is a fantastic choice if you prioritize **nostalgia, simplicity, and affordability** over modern performance and comfort. It s ideal for **casual riders, collectors, or those who enjoy tinkering with vintage machinery**. However, it s not suited for **high-speed highway riding, long-distance travel, or riders seeking advanced safety features**.

If you re looking for a **practical, reliable, and low-maintenance** bike for urban use or short trips, the AT1 125 is a great option especially if you re willing to invest time in maintenance and enjoy its classic charm. For **modern riders who need power, comfort, and safety**, a contemporary 125cc bike (e.g., Honda CB125F, Yamaha MT-125, or Kawasaki Ninja 125) would be a better fit.

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### **Recommendation**

- You love vintage motorcycles and appreciate its historical significance.

- You plan to use it for **short, leisurely rides** in the city or on backroads.

- You re prepared to **maintain it regularly** and enjoy the process of restoring or modifying it.

- You don t need high speeds or long-distance comfort.

- You find its **affordability and simplicity** appealing over modern conveniences.

- You require **high-speed stability, modern safety features, or long-distance comfort**.

- You re looking for a **practical, no-fuss commuter bike** with minimal maintenance.

- You live in an area with **strict emissions laws or speed restrictions** for older bikes.

- You prefer **modern ergonomics, power, or aftermarket support**.

**Final Verdict:** The AT1 125 is a **passion project bike** rather than a daily driver. If you re buying it for enjoyment, nostalgia, or as a restoration challenge, it s a rewarding purchase. If you need a bike for everyday use, consider a modern 125cc alternative. Always inspect the bike thoroughly (engine condition, frame rust, brakes, and electricals) before purchasing to ensure it s in good working order.

Details:

Please see photos for condition details. Yamaha AT1 125 AT125 CT1 OEM Cylinder Jug 1969 1970 1971 Barrel condition: Pre-Owned condition. Reasonable offers accepted.

part #: 248113110000 prices

• $55.00-$70.00

specifications cyclevintagee:

• for models: At1, Ct1, 125
• for makes: Yamaha
• for years: 1969-1971
• part type: Cylinder
• machine type: Dual Sport Motorcycle
• color: Silver
• material: Aluminum, Steel
• vintage part: Yes
• country of origin: Japan
• upc: 248113110000

payments cyclevintagee:

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

shipping cyclevintagee:

• type: Calculated
• class: Standard
• cost: $12.04
• transit: 4-9 Days
• service: USPS Ground Advantage
• carrier: USPS

general cyclevintagee:

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

seller cyclevintagee:

• city: Monroe, Oregon
• # reviews: 759
• rating: 97.9%

offer cyclevintagee:

• started: February 17, 2026
• best offers: True
• availability: In Stock
• options: Ship-to-home
• sold: 0
• quantity: 1

returns cyclevintagee:

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

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