HONDA 42601-300-040 Rear Wheel Hub Rim Spokes Sprocket 77-78

( Manufacturer Part Number: 42601-300-040 ), ( Type: Wheel Hub Rear Bike )

Review HONDA Four Rear Wheel Hub Rim Spokes Sprocket Oem 77-78 fits CB750K 750 1978

The **Honda 42601-300-040 Rear Wheel Hub Assembly** for the **1978 CB750K (and compatible with the 1977-1978 models)** is a meticulously engineered, high-performance component designed to deliver uncompromising durability and precision in motorcycle wheel assembly. This genuine OEM replacement part is crafted from Honda s proprietary materials, ensuring a perfect fit and seamless integration with the CB750K s drivetrain, brake system, and suspension setup. The wheel hub assembly features a robust **spindle-mounted design**, incorporating a **7-spoke alloy rim** that balances strength with weight efficiency, reducing rotational inertia for improved acceleration and handling. The **sprocket** is precision-machined to match the factory specifications, guaranteeing optimal chain engagement and minimizing wear on the drivetrain components. Whether you're restoring a classic CB750K to its original glory or upgrading an existing wheel assembly, this part is built to withstand the demands of high-speed riding, aggressive cornering, and long-distance touring. The **sealed bearings** within the hub assembly ensure smooth, vibration-free rotation, while the **adjustable cone and locknut system** allows for precise axle tensioning, critical for maintaining proper wheel alignment and brake performance. Perfect for riders seeking authenticity, reliability, and the timeless performance of Honda s legendary 750cc engine, this rear wheel hub assembly is a must-have for enthusiasts who demand nothing less than factory-grade quality.

### **Pros and Cons of buying a 1978 Honda CB750K Rear Wheel Hub, Rim, Spokes, and Sprocket (Part #42601-300-040, 77-78 Model)**

1. **Original Equipment Quality** Honda is known for durable, well-engineered components, and this part is designed to fit the CB750K perfectly, ensuring proper alignment and performance.

2. **Direct Fitment** The part number (42601-300-040) is confirmed for the **1977-1978 CB750K**, reducing the risk of compatibility issues.

3. **Reliability** Honda s wheel components are built to last, reducing the likelihood of premature failure if installed correctly.

4. **Easier Maintenance** A functional rear wheel assembly simplifies routine checks like tire changes, brake adjustments, and chain maintenance.

5. **Cost-Effective Replacement** Buying a complete wheel assembly (hub, rim, spokes, sprocket) is often cheaper than sourcing each part individually, especially from aftermarket suppliers.

6. **Aesthetic and Functional Match** The rim and spokes maintain the classic CB750K look while ensuring proper wheel balance and braking performance.

7. **Reduced Downtime** If the wheel is the only failing component, replacing it avoids the need for a full wheel rebuild or purchase of a used wheel.

1. **Age of the Part** While Honda parts are durable, this is a **40 year-old design**, meaning it may not benefit from modern materials or manufacturing improvements.

2. **Potential Wear on Other Components** If the wheel was removed due to damage (e.g., bent rim, worn bearings), other parts (axle, hub bearings, chain) may also need inspection or replacement.

3. **Limited Availability** Finding an exact match (especially for the sprocket and spokes) may be difficult if buying from a non-Honda source, risking fitment issues.

4. **Installation Complexity** Rebuilding or installing a wheel requires proper torque settings, bearing lubrication, and alignment. Improper installation can lead to premature wear or failure.

5. **Cost vs. Used Wheel Alternative** Depending on condition, a used CB750K wheel (from a wrecked bike or salvage yard) might be cheaper, though it could have hidden damage.

6. **Spoke Tension and Truing** If the spokes are loose or the rim is warped, additional work (truing the rim) may be needed, adding time and effort.

7. **Sprocket Wear** The sprocket is part of the wheel assembly, but if the chain or rear sprocket (if separate) is worn, this part alone won t fully resolve drivetrain issues.

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### **Conclusion**

- You need a **direct OEM replacement** for a failed wheel.

- You want to **avoid sourcing multiple parts** from different suppliers.

- The rest of the drivetrain (chain, sprocket, bearings) is in good condition.

- You re willing to **properly install and maintain** the wheel to ensure longevity.

- The wheel was removed due to **severe damage** (e.g., bent rim, seized hub), inspect other components first.

- You re on a **tight budget**, compare the cost against a **used wheel** (if available) or a **rebuilt wheel kit**.

- You lack **mechanical experience**, consider having a shop perform the installation to avoid mistakes.

---

### **Recommendation**

You confirm the part number matches your **1977-78 CB750K**.

You inspect the **hub bearings, axle, and chain** for wear before installing.

You re prepared to **true the rim and tension spokes** if needed.

You have access to **proper tools** (wheel truing stand, torque wrench, bearing press).

The wheel failure is part of a **larger issue** (e.g., frame damage, seized engine).

You find a **used wheel in good condition** at a lower cost.

You re unsure about **installation quality** and don t have a mechanic available.

**Final Verdict:** This is a **solid OEM replacement** for most riders, but **due diligence on surrounding components** and **proper installation** are key to success. If in doubt, consult a Honda specialist or motorcycle mechanic before purchasing.

Details:

part #: 42601300040 prices

• $70.00-$161.95

specifications wheehucyc:

• for models: Cb750k, 750
• for makes: Honda
• for years: 1978
• mpn: 42601-300-040
• type: Wheel Hub Rear Bike

returns wheehucyc:

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

seller wheehucyc:

• # reviews: 35605
• rating: 99.7%
• city: Lake Havasu City, Arizona

offer wheehucyc:

• availability: In Stock
• quantity: 1
• started: February 13, 2026
• options: Ship-to-home
• sold: 0

general wheehucyc:

• Motorcycle Scooter Parts Accessories > Wheels, Tires Parts > Wheel Hubs
• condition: Used

shipping wheehucyc:

• cost: $65.00
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery
• carrier: FedEx
• class: Standard
• transit: 5-8 Days

payments wheehucyc:

• credit card: Discover
• wallet: Paypal
• other

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