Replacing the C Hub Set (Part No. 21002) on the YIKONG YK4107 RC Car is fairly straightforward. First, remove the original C hubs from both sides of the front axle, then take off the steering knuckles, bearings, and related hardware. Install the bearings and other components into the new C Hub Set, and reassemble everything using the original screws and factory mounting positions. Make sure the left and right C hubs are installed on the correct sides to ensure proper steering and suspension movement. After installation, check that the steering moves freely, all screws are securely tightened, and perform a low-speed test to confirm everything is working correctly.
