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What is the function of the Bearing 5×11×4 (21120) on the YIKONG YK4107 RC Car?
The YIKONG YK4107 Bearing 5×11×4 (21120) is a metal ball bearing used in the drivetrain and rotating assemblies of the crawler. Its main function is to...
Why is my YIKONG YK4107 RC Car making noise from the drivetrain?
Grinding or clicking noises from the drivetrain of your YIKONG YK4107 can be caused by worn, dry, or damaged bearings, including the Bearing 12x18x4 (21122). If...
Why is my YIKONG YK4102 RC Car steering feeling loose or vague?
Loose or vague steering on your YIKONG YK4102 is often caused by worn Ball Linkage Ends (13014) developing play at the pivot points. This is a...
How can I reduce wear on the 34T Driven Gear of the YIKONG YK4107 RC Car?

Keeping the 34T Driven Gear (Part No. 21033) of the YIKONG YK4107 RC Car in good condition is easy with a little regular maintenance. After each off-road run, clean dirt, sand, and debris from the drivetrain to prevent excessive wear caused by particles getting between the gears. It's also a good idea...

How do I install the C Hub Set on the YIKONG YK4107 RC Car?

Start by removing the original C hubs from both sides of the front axle on the YIKONG YK4107 RC Car. Then remove the steering knuckles, bearings, and related hardware. Install the bearings and other components into the new C Hub Set (Part No. 21002) and reassemble them according to the...

How do I install the Rear Portal Housing on the YIKONG YK4107 RC Car?

Begin by removing the damaged or worn Rear Portal Housing (Part No. 21001) from the YIKONG YK4107 RC Car. Check the internal gears, bearings, and related components, and replace any worn parts if necessary. Transfer the original gears, bearings, and other internal components into the new rear portal housing. Reassemble everything...

What is the function of the YIKONG YK4107 RC Car Original Parts – Girder 21012, and how to install it?

The Girder 21012 is an original YIKONG YK4107 RC Car part, featuring a black appearance and made from high-quality nylon with an integrated molding design, ensuring excellent strength and durability. During off-road crawling or high-speed driving, it effectively supports the chassis and suspension system, helping prevent bending or breakage. What...

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Recent posts

What is the function of the Bearing 5×11×4 (21120) on the YIKONG YK4107 RC Car?
The YIKONG YK4107 Bearing 5×11×4 (21120) is a metal ball bearing used in the drivetrain and rotating assemblies of the crawler. Its main function is to...
Why is my YIKONG YK4107 RC Car making noise from the drivetrain?
Grinding or clicking noises from the drivetrain of your YIKONG YK4107 can be caused by worn, dry, or damaged bearings, including the Bearing 12x18x4 (21122). If...
Why is my YIKONG YK4102 RC Car steering feeling loose or vague?
Loose or vague steering on your YIKONG YK4102 is often caused by worn Ball Linkage Ends (13014) developing play at the pivot points. This is a...