fits model: Ct70, Atc, Trx. make: Honda. year: 1966–2009.

( Manufacturer Part Number: 90801-035-000 ), ( Part Type: Plug ), ( Country Of Origin: United States ), ( Manufacturer Warranty: Unspecified Length ), ( Storage Location: I1 Tch-n Buk 31 Bin 5 )
The **Honda 90801-035-000 1966 2009 CT70/Z50 ATC/TRX Rubber Plug (19mm)** is a meticulously engineered aftermarket replacement part designed to restore optimal performance and longevity to the automatic transmission systems found in Honda s iconic CT70 and Z50 off-road motorcycles produced between 1966 and 2009. This high-quality rubber plug serves as a critical component within the transmission s **ATC (Automatic Transmission Control) or TRX (Transmission Range Control)** mechanism, ensuring smooth engagement and disengagement of the transmission bands while absorbing shock and reducing wear on internal clutch and shift components. Crafted from durable, heat-resistant rubber compound, this plug is engineered to withstand the demanding conditions of off-road riding, where vibrations, sudden shifts, and heavy loads can otherwise accelerate mechanical degradation. Its precise **19mm diameter** fits seamlessly into the transmission housing, maintaining proper alignment with the shift forks and bands, thereby preventing premature slippage, excessive noise, or binding common issues that plague aging or poorly maintained transmissions. Whether used in vintage restorations, high-mileage service projects, or as a preventative maintenance upgrade, this plug is a straightforward yet indispensable solution for riders seeking to preserve the reliability and responsiveness of their Honda s legendary ATC/TRX system. Its universal compatibility across multiple model years underscores its value as a trusted, off-the-shelf replacement that adheres to Honda s original engineering standards while offering enhanced durability over time.
### **Pros and Cons of Buying a 1966 2009 Honda CT70/Z50 ATC (Part #90801-035-000, 19mm Rubber Plug)**
#### **Pros**
1. **Reliability and Durability** Honda s ATC (Automatic Transmission Control) models, particularly the CT70/Z50, are known for their robust, air-cooled engines and simple mechanical designs. Many last well beyond 100,000 miles with basic maintenance.
2. **Off-Road Capability** The ATC system (automatic clutch engagement) is ideal for trail riding, making it easier to handle rough terrain without constant clutch manipulation. The 19mm rubber plug (part #90801-035-000) is a common upgrade for better durability and reduced noise in the exhaust system.
3. **Affordability** Compared to modern ATVs, these models are inexpensive to purchase, repair, and maintain. Parts are widely available, and labor costs are low.
4. **Classic Appeal** The CT70/Z50 has a nostalgic, rugged charm that appeals to enthusiasts who enjoy vintage off-road machines. Restoring or modifying one can be a rewarding hobby.
5. **Simple Maintenance** The engine and drivetrain are straightforward, requiring basic tools and knowledge for upkeep. Common issues like carburetor adjustments, chain tension, and spark plug changes are easy to handle.
6. **Versatility** Can be used for trail riding, farm work, or even as a side-by-side alternative in some cases, depending on modifications.
7. **Strong Secondary Market** Due to their popularity, finding used parts, manuals, and restoration guides is relatively easy.
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#### **Cons**
1. **Outdated Safety Features** Modern ATVs have roll cages, better brakes, and improved stability control. The CT70/Z50 lacks these, making it riskier in high-speed or aggressive riding conditions.
2. **Poor Fuel Efficiency** The air-cooled, single-cylinder engine is thirsty, especially on long rides. Expect around **2 3 MPG** in most conditions.
3. **Noise and Vibration** The rubber plug helps reduce exhaust noise, but the engine itself is loud and vibrates significantly, which can be uncomfortable over time.
4. **Limited Comfort** Basic seating, minimal suspension travel, and no ergonomic controls make long rides tiring. Modern ATVs offer far better rider positioning.
5. **Reliability Issues Over Time** While durable, older models may suffer from:- **Carburetor problems** (flooding, dirty jets)
- **Clutch wear** (ATC systems can slip if not maintained)
- **Exhaust leaks** (common with rubber plugs if not properly installed)
- **Brake fade** (drum brakes are less effective than modern disc brakes)
6. **Emissions and Legal Restrictions** In some areas, older ATVs may not meet modern emissions standards, limiting where they can be ridden legally.
7. **Limited Aftermarket Support** While parts exist, modern upgrades (e.g., suspension, brakes, electronics) are harder to find compared to newer ATVs.
8. **Resale Value** Unlike modern ATVs, these models depreciate quickly and have a smaller resale market.
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### **Conclusion**
The **Honda CT70/Z50 (1966 2009) with the 19mm rubber plug (part #90801-035-000)** is a **great choice for enthusiasts who prioritize simplicity, off-road capability, and low cost** especially for casual trail riding, farm work, or restoration projects. Its **reliability, availability of parts, and classic appeal** make it a solid investment for those who don t need modern comforts or high performance.
However, if you seek **safety, efficiency, comfort, or plan to ride frequently**, a **modern ATV** (e.g., Honda TRX250X, Can-Am Outlander, or Yamaha Raptor) would be a better long-term choice. The CT70/Z50 is **not ideal for high-speed riding, daily use, or those who value modern technology and safety features**.
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### **Recommendation**
**Buy this ATV if:**You enjoy **vintage off-road machines** and don t mind basic maintenance.
You need a **budget-friendly, no-frills ATV** for light trails, farm work, or as a project.
You **already own or plan to modify** it for better comfort (e.g., upgrading suspension, brakes, or ergonomics).
You **don t ride aggressively** and prioritize simplicity over modern amenities.
**Avoid this ATV if:**You want **modern safety features** (roll cage, ABS, stability control).
You plan to **ride frequently or on paved roads** (poor fuel economy, noise, and comfort).
You need **high performance or long-distance capability**.
You **don t enjoy basic mechanical work** (carb tuning, chain maintenance, etc.).
**Final Verdict:**This is a **fantastic choice for purists and budget-conscious riders**, but not for those seeking a modern, high-performance ATV. If you re buying it **for fun, nostalgia, or as a weekend project**, it s a great purchase. If you need **reliability for daily use or serious off-roading**, consider a newer model.
It provides protection and a clean finish. Honda MX / ATV. Spotlight: A Day Inside . The image to watch on YouTube.
Honda Cruiser. 1985 2024 Kawasaki Ninja Eliminator Vulcan Collar OEM 92027-1935. Fits: This 19mm rubber plug fits various Honda motorcycles, ATV, and scooters from 1966-2009.