LEMANS K22-3603E Nos Rear Sprocket Dt 51T 175 79-81 2A6-25451-10

( Brand: Lemans ), ( Manufacturer Part Number: K22-3603E ), ( Part Type: Sprocket ), ( Country Of Origin: Taiwan )

Review LEMANS Nos Rear Sprocket Yam 51t Dt 175 79-81 Oem fits 428 125

The **Lemans K22-3603E NOS Rear Sprocket** is a meticulously preserved, high-performance replacement part designed specifically for Yamaha 428 series dirt bikes, including the iconic DT 125 and 175 models produced between 1979 and 1981. This genuine, never-used-in-service (NOS) component carries the original factory specifications and build quality that enthusiasts and restorers demand, ensuring an exact match to the OEM design. Crafted from durable, heat-treated steel, the sprocket features a robust 51-tooth configuration, which is engineered to deliver optimal chain engagement and power transfer while minimizing wear on the drivetrain. The precise 2A6-25451-10 part number confirms its compatibility with the 2A6 engine variant, a critical detail for maintaining the bike s original performance and handling characteristics. Whether you're restoring a classic Yamaha to showroom condition or upgrading an existing bike for improved reliability, this NOS sprocket offers the authenticity and performance of a direct factory replacement. Its clean, unused condition ensures that it will integrate seamlessly with the rest of the drivetrain, reducing the risk of premature failure and preserving the bike s mechanical integrity. For collectors and riders who prioritize both heritage and performance, this sprocket is an essential component for achieving the perfect balance of nostalgia and functionality.

### **Pros and Cons of buying a Leman K22-3603E NOS Rear Sprocket (Yamaha 428/51T DT 125/175 79-81 2A6-25451-10)**

1. **New Old Stock (NOS) Condition** The sprocket is unused and in original packaging, meaning it has not been worn or damaged. This ensures optimal performance and longevity compared to used parts.

2. **Direct Fitment** Designed specifically for Yamaha 428/51T DT engines (125cc/175cc models from 1979 1981) with the part number **2A6-25451-10**, eliminating compatibility issues.

3. **High-Quality Material** Leman parts are known for durability and precision engineering, reducing the risk of premature failure.

4. **Easier Maintenance** Since it s NOS, you won t need to worry about cleaning or inspecting it for wear before installation.

5. **Preservation of Originality** If restoring a classic bike, using NOS parts maintains authenticity and resale value.

6. **Reliability** A well-made sprocket reduces chain wear and ensures smooth shifting, improving overall drivetrain efficiency.

7. **Warranty Potential** Some NOS suppliers may offer limited warranties or guarantees, providing peace of mind.

1. **Cost** NOS parts are significantly more expensive than aftermarket or used alternatives, which can be a barrier for budget-conscious buyers.

2. **Limited Availability** Finding NOS parts for older, niche models can be difficult, and stock may sell out quickly.

3. **Storage and Handling** Since it s unused, it may require careful storage to prevent damage (e.g., dust, moisture, or physical stress).

4. **Potential for Overpaying** Some sellers inflate prices for NOS items, especially for rare or discontinued parts. Researching fair market value is essential.

5. **No Immediate Testing** Unlike a used part, you can t test it beforehand to confirm fit or condition, though this is mitigated by the NOS guarantee.

6. **Longer Lead Times** If the seller has limited stock, ordering may take time, delaying repairs or restorations.

7. **Environmental Considerations** NOS parts contribute to waste if not used, as they remain unused until purchased.

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### **Conclusion**

The **Leman K22-3603E NOS rear sprocket** is an excellent choice if you prioritize **quality, reliability, and authenticity** for your Yamaha 428/51T DT bike from the late 1970s. Its **unused condition, direct fitment, and brand reputation** make it a strong investment for restorers or owners seeking long-term performance. However, the **higher cost and potential availability issues** may not justify the purchase for casual riders or those on a tight budget.

If you re restoring a classic bike or need a **high-quality replacement** and can afford the premium, this is a **recommended choice**. For budget-conscious buyers, a **used but well-maintained sprocket** or an **aftermarket equivalent** (if available) could be a viable alternative.

- You value **originality and longevity** for your restoration.

- You re willing to pay a premium for **peace of mind and reliability**.

- You ve verified the **seller s reputation** and **fair pricing**.

- You re working with a **limited budget** and can find a suitable used or aftermarket option.

- You re unsure about the **long-term availability** of the part and don t want to overpay.

- You re not committed to maintaining the bike s classic status.

Details:

part #: k223603e prices

• $21.99-$31.75

specifications cyclevintagee:

• for models: 428, 125
• for makes: Yamaha
• brand: Lemans
• mpn: K22-3603e
• part type: Sprocket
• country of origin: Taiwan

general cyclevintagee:

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

returns cyclevintagee:

• policy: No Returns

payments cyclevintagee:

• other
• money order
• cash
• credit card: Diners-club
• wallet: Apple-pay
• check

shipping cyclevintagee:

• transit: 5-11 Days
• type: Fixed
• service: Economy
• cost: $0.00
• class: Economy

seller cyclevintagee:

• # reviews: 718
• rating: 100.0%
• city: Alvarado, Texas

offer cyclevintagee:

• options: Ship-to-home
• quantity: 1
• sold: 0
• best offers: True
• started: March 26, 2026
• availability: In Stock

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