The YIKONG YK4073 RC Truck Parts Center Dogbone Rear (Part No. 71056) is an original metal longitudinal center driveshaft for the YIKONG YK4073 RC Truck. It transfers power from the transmission to the rear axle assembly. Its front end mates with the 13T Steel Pinion Gear Assembly (Part No. 71026), while its rear end connects to the rear axle input. As a key drivetrain component, it rotates continuously at high speed whenever the vehicle is moving. Regular maintenance helps reduce wear, extend its service life, and ensure smooth, reliable power transmission.

Why Is It Important to Maintain the Center Dogbone Rear?
The Center Dogbone Rear is constantly subjected to torque, vibration, and impacts during driving, while also being exposed to mud, sand, and dust. Without regular maintenance, both ends of the dogbone and their mating surfaces will gradually wear, reducing drivetrain efficiency and potentially affecting the entire rear drivetrain system.
Poor maintenance may lead to:
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Reduced power transmission efficiency.
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Abnormal drivetrain noise.
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Increased vibration during acceleration.
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Accelerated wear of both dogbone ends.
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Increased clearance between the dogbone and Part No. 71026 or the rear axle input.
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Shortened service life of the rear drivetrain.

How to Maintain the YIKONG YK4073 RC Truck Center Dogbone Rear
Keeping the driveshaft clean, properly lubricated, and regularly inspected is the key to maximizing its lifespan.
Step 1: Clean the Driveshaft
After each drive, especially in muddy, sandy, or dusty conditions, use a soft brush or compressed air to remove dirt and debris from the Center Dogbone Rear.
Pay special attention to:
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Both ends of the dogbone.
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The connection area with the 13T Steel Pinion Gear Assembly (Part No. 71026).
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The connection point at the rear axle input.
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Dirt accumulated along the shaft.
Step 2: Inspect for Wear
Carefully inspect the following:
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Whether the dogbone ends have become rounded.
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Whether the shaft is bent or twisted.
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Whether there are cracks or deformation.
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Whether excessive wear appears on the contact surfaces.
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Whether it fits securely with Part No. 71026 and the rear axle input.
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Whether the driveshaft rotates smoothly without binding or excessive play.
Replace any damaged parts promptly.
Step 3: Inspect the Connection Points
Carefully inspect the connection points between the 13T Steel Pinion Gear Assembly (Part No. 71026) and the rear axle input.
Check for:
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Excessive wear.
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Cracks.
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Deformation.
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Excessive looseness.
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Any condition that may affect smooth power transmission.
If both the dogbone and the mating components are heavily worn, inspect the related parts and replace them as necessary to maintain optimal drivetrain performance.
Step 4: Apply Proper Lubrication
Apply a thin layer of high-quality grease to the contact areas between the dogbone ends and the mating components to reduce metal-to-metal wear.
Avoid excessive grease, as it can attract dirt and sand, accelerating wear.
Step 5: Check Installation
Before driving, make sure:
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The Center Dogbone Rear is installed correctly.
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The front end is properly engaged with the 13T Steel Pinion Gear Assembly (71026).
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The rear end is correctly connected to the rear axle input.
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The driveshaft rotates smoothly.
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There is no excessive play or abnormal vibration.

Important Note
This guide specifically covers the Center Dogbone Rear (Part No. 71056), which is the longitudinal center driveshaft for the rear drivetrain. The YIKONG YK4073 RC Truck also uses a Center Dogbone Front (Part No. 71055) to transfer power to the front axle. Although they look similar, they differ in installation position, length, and function, and are not interchangeable. Always verify the part number and installation location before purchasing or installing replacement parts.
Daily Maintenance Tips
Good maintenance habits can significantly extend the service life of the YIKONG YK4073 RC Truck drivetrain.
Recommended practices:
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Clean the driveshaft after every off-road run.
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Inspect both dogbone ends regularly.
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Inspect Part No. 71026 and the rear axle input for wear.
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Apply lubricant sparingly.
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Avoid prolonged full-throttle driving under heavy load.
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Avoid severe impacts to the chassis.
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Replace worn original parts promptly.

FAQ
Q1: How often should I inspect the Center Dogbone Rear?
If you frequently drive your YIKONG YK4073 RC Truck off-road or at high speeds, perform a quick inspection after every run and a more thorough maintenance check every few driving sessions.
Q2: Can I continue using a slightly worn Center Dogbone Rear?
Minor wear may be acceptable, but if the dogbone ends become noticeably rounded, the shaft bends, cracks appear, or the fit with Part No. 71026 becomes loose, it should be replaced immediately to prevent damage to the drivetrain.
Q3: Why does the drivetrain make clicking noises?
Clicking noises are commonly caused by worn dogbone ends, worn mating components, insufficient lubrication, or improper installation. Inspect the Center Dogbone Rear (71056), 13T Steel Pinion Gear Assembly (71026), and the rear axle input.
Q4: Should I apply a large amount of grease?
No. Only a thin layer is needed. Excess grease attracts dirt and sand, which may accelerate wear.
Q5: Why should I use the original Center Dogbone Rear?
The original YIKONG YK4073 RC Truck Parts Center Dogbone Rear (71056) is manufactured to the correct dimensions and material specifications, ensuring proper fit, reliable power transmission, and long-term drivetrain durability.
Q6: How does the Center Dogbone Rear work with Part No. 71026?
The front end of the Center Dogbone Rear (71056) mates with the 13T Steel Pinion Gear Assembly (71026) to receive power from the transmission, then transfers that power through its rear end to the rear axle input. Regular inspection of both components and proper lubrication help maintain smooth, efficient power delivery and extend the service life of the drivetrain.

Product Specifications
| Item | Specification |
|---|---|
| Product Name | Center Dogbone Rear |
| Part Number | 71056 |
| Compatible Model | YIKONG YK4073 RC Truck |
| Part Type | Original Parts |
| Material | Metal |
| Function | Transfers power from the transmission to the rear axle assembly. The front end mates with the 13T Steel Pinion Gear Assembly (Part No. 71026) for smooth and reliable power transmission. |
Conclusion
The YIKONG YK4073 RC Truck Parts Center Dogbone Rear (71056) is an essential original metal drivetrain component for the YIKONG YK4073 RC Truck. Its front end mates with the 13T Steel Pinion Gear Assembly (71026), while its rear end connects to the rear axle input to transfer power efficiently to the rear axle. By regularly cleaning dirt and debris, inspecting both ends of the dogbone and its mating components for wear, applying the proper amount of lubricant, and replacing worn original parts promptly, you can significantly extend the service life of the Center Dogbone Rear and keep your YIKONG YK4073 RC Truck delivering smooth, reliable, and efficient drivetrain performance.
