KAWASAKI 51001-1011-7Y Mkii Fuel Gas Tank MK2 Jb6

( Manufacturer Part Number: 51001-1011-7Y ), ( Part Type: Fuel Tank ), ( Compatible Year: 1980, 1979 )

Review KAWASAKI Genuine Mk2 Mkii Fuel Gas Tank Jb6 fits KZ1000 1979-80

The **Kawasaki 51001-1011-7Y 1979-1980 KZ1000 MKII (MkIi) Fuel Gas Tank** is a meticulously crafted, high-performance component designed exclusively for Kawasaki s legendary **KZ1000** motorcycle, a machine celebrated for its raw power, aggressive styling, and pioneering role in the sportbike revolution of the late 1970s. This **JB6-series fuel tank** is a direct replacement part, engineered to match the original specifications of the **MKII model**, ensuring an exact fit for both the **1979 and 1980 production years**, where subtle refinements were made to the frame and suspension. Crafted from durable **polypropylene resin**, the tank is built to withstand the rigors of high-speed riding, aggressive cornering, and prolonged exposure to the elements, while maintaining the iconic **sleek, aerodynamic silhouette** that defines the KZ1000 s aggressive stance. The **smooth, contoured surface** not only enhances the bike s aggressive aesthetic but also contributes to improved airflow and cooling efficiency, reducing heat buildup in the engine bay a critical consideration for the KZ1000 s high-revving, air-cooled inline-four powerplant. The **reinforced mounting brackets** are precision-machined to align perfectly with the motorcycle s frame rails, eliminating any risk of misalignment or fuel sloshing during hard riding, while the **integrated filler neck** is designed with a secure, leak-proof seal to prevent spills, even during dynamic maneuvers. Whether restoring a classic KZ1000 to its original glory or upgrading an existing bike for improved performance and reliability, this **JB6 fuel tank** delivers a seamless blend of heritage design and modern engineering, ensuring both authenticity and durability for enthusiasts who demand nothing less than perfection from their Kawasaki.

### **Pros and Cons of Buying a Kawasaki KZ1000 MKII (1979-1980, Model 51001-1011-7Y, JB6 Fuel Tank)**

#### **Pros**

1. **Classic Design and Heritage** The Kawasaki KZ1000 MKII is a legendary motorcycle from the golden era of Japanese sportbikes. Its timeless design, aggressive styling, and cultural significance make it a desirable collector s item.

2. **Strong Performance for Its Era** With a 998cc air-cooled inline-four engine, it produces around **80-90 hp** (depending on tuning), which was impressive in the late 1970s. It offers a smooth, rev-happy ride with a distinctive exhaust note.

3. **Reliability and Durability** Kawasaki engines from this era are known for their robustness. With proper maintenance, many KZ1000s have lasted well beyond 50,000 miles, especially if the original engine is intact.

4. **Modding Potential** The MKII is a favorite among restorers and tuners. Upgrades like modern fuel injection, high-performance exhausts, and modern suspension can significantly improve performance and comfort.

5. **Strong Community and Parts Availability** Due to its popularity, there is a large aftermarket supporting the KZ1000. Parts like carburetors, exhausts, and electrical components are relatively easy to find.

6. **Potential for Restoration Value** If the bike is in poor condition, a well-executed restoration could yield a high resale value, especially if it s kept in original or near-mint condition.

7. **Unique Character** The bike s aggressive stance, peppy engine, and classic handling make it enjoyable to ride, even by modern standards.

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#### **Cons**

1. **Age and Wear** A 1979-1980 KZ1000 will likely have significant mileage (often 30,000 miles) and will require **major maintenance** if not already done. Common issues include worn-out suspension, rusted frames, and failing electrical components.

2. **Original Condition vs. Restoration**

- **Original condition:** If you buy it as-is, expect to spend **$3,000 $6,000 ** on repairs (engine rebuild, frame rust treatment, suspension, brakes, etc.).

- **Restored condition:** A fully restored bike can cost **$10,000 $20,000 **, depending on rarity and condition.

3. **Fuel System Limitations** The original **JB6 fuel tank** (a rare variant) may have been modified for carburetion. If the bike uses **CV carburetors**, they can be finicky and require frequent tuning. Modern fuel injection would be a major upgrade but adds complexity.

4. **Suspension and Brakes** Original **conventional forks and rear shocks** are stiff and outdated by today s standards. Upgrading to modern suspension (e.g., hlins, Marzocchi) is recommended for comfort and control.

5. **Electrical Issues** Older wiring harnesses, alternators, and ignition systems can fail. A full electrical overhaul may be necessary.

6. **Rust and Frame Integrity** Many KZ1000s suffer from **frame rust**, especially in the swingarm and lower frame. A **full frame inspection and rust treatment** (or replacement) may be required.

7. **Modern Compliance Concerns** If you plan to ride it legally, ensure it meets **current safety standards** (lights, mirrors, turn signals, etc.). Some states may require **modernized exhaust systems** to pass emissions.

8. **Fuel and Insurance Costs** Gasoline engines like this one can be **more expensive to insure** than modern bikes, especially if they re high-value restorations.

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### **Conclusion**

The **Kawasaki KZ1000 MKII (1979-1980, JB6 fuel tank)** is a **fantastic motorcycle for enthusiasts** who appreciate classic bikes, enjoy restoration projects, or want a unique riding experience. However, it is **not a plug-and-play purchase** it requires **significant investment in maintenance, restoration, or upgrades** to be fully functional and enjoyable.

If you are **passionate about vintage motorcycles, have mechanical skills, or are willing to commit to a long-term project**, this bike can be an **excellent addition to your collection**. However, if you are looking for a **ready-to-ride, low-maintenance machine**, a modern sportbike or a well-restored classic would be a better choice.

---

### **Recommendation**

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

- You are **willing to invest time and money** in restoring it.

- You **appreciate the history and character** of the bike more than modern convenience.

- You plan to **ride it occasionally** rather than daily.

- You expect a **fully functional, low-effort bike** without major repairs.

- You are **not prepared for unexpected costs** (engine rebuilds, frame work, electrical issues).

- You prefer **modern comfort and reliability** over classic charm.

**Final Verdict:** The KZ1000 MKII is a **great project bike for the right buyer**, but it is **not a beginner-friendly purchase**. If you re serious about it, **get a thorough pre-purchase inspection** and **budget for at least $5,000 $10,000** in restoration costs before buying. If you find one in **excellent original condition**, it could be a **long-term investment** but be prepared for the work involved.

Details:

I think they could be hidden very well with a skilled touch up artist. I see no dents or dings. Overall, I think this tank is an excellent value. This is an exceptionally clean rider tank.

I think a buffer would take out most of the imperfections. This tank was pulled off a trade in bike years ago and stored in doors. There are scratches in the tank, but they appear to be deep and well defined. Most of the flaws can be buffed out and with a new decal kit, tank would look excellent.

The finish of the tank is mostly good with some cloudy areas.

part #: 5100110117y prices

• $149.95-$549.95

specifications fendeframat:

• for models: Kz1000
• for makes: Kawasaki
• for years: 1979-80
• mpn: 51001-1011-7y
• part type: Fuel Tank
• compatible year: 1980, 1979

shipping fendeframat:

• cost: $36.15
• transit: 4-10 Days
• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• class: Standard
• type: Calculated

general fendeframat:

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

seller fendeframat:

• rating: 100.0%
• # reviews: 4650
• city: Fayetteville, Arkansas

returns fendeframat:

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

payments fendeframat:

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

offer fendeframat:

• sold: 0
• availability: In Stock
• quantity: 1
• started: March 28, 2026
• options: Ship-to-home

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