If your YIKONG YK4061 RC Car shock absorber is leaking oil, one possible cause is a loose or damaged Shock Absorber Upper Lid (Part No. 26027) or a worn O-ring. A poor seal allows shock oil to escape, reducing damping performance and affecting suspension stability. Inspect the Upper Lid for looseness, check the O-ring for wear or damage, and replace any faulty parts to restore proper sealing and suspension performance.
A cracked YIKONG YK4061 RC Car Chassis Base (Part No. 26006) can reduce chassis rigidity, affect suspension alignment, and increase stress on the drivetrain and steering system. Continued driving with a damaged chassis may lead to poor handling and additional component wear. If the chassis base is severely cracked or deformed, replacing it is recommended to restore the structural strength and reliability of your YIKONG YK4061 RC Car.
The YIKONG YK41011 RC Car Hex Wheel Hub (Part No. 21253) should be replaced if it shows signs of excessive wear or no longer holds the wheel securely. Over time, repeated acceleration, braking, and off-road driving can gradually wear the hex shape, reducing power transfer and causing the wheel to loosen.
Common signs that the Hex Wheel Hub needs replacing include:
When replacing the hubs, be sure to install the Short hubs on the front axle and the Long hubs on the rear axle. Using the correct parts helps maintain proper wheel alignment, drivetrain efficiency, and stable handling on your YIKONG YK41011 RC Car.
If you’re looking for improved durability and a more realistic appearance, upgrading the YIKONG YK4107Pro RC Car Footboard (Part No. 21229) to a CNC-machined aluminum version is a worthwhile choice. While the original PA footboards are lightweight and impact-resistant, aluminum footboards offer greater strength, better resistance to deformation, and a premium metallic finish.
Our upgraded YIKONG YK4107 RC Car Metal Side Pedals are available in Black, Red, and Silver, and each set includes matching mounting screws. They are designed to fit the factory mounting points, allowing for a direct bolt-on installation without drilling or modifications.
Whether you’re replacing worn original parts or customizing your crawler, aluminum footboards provide a durable upgrade that enhances both appearance and long-term reliability.
Yes. Although the YIKONG YK4107Pro RC Car Rear View Mirror (Part No. 21213) does not affect driving performance, replacing a broken or missing mirror helps restore the vehicle’s original appearance and improves its overall scale realism.
Compatible with both the YIKONG YK4107Pro RC Car and YIKONG YK4107 RC Car, this original replacement part is made from durable PA (Polyamide) for excellent toughness and impact resistance. It installs directly in the factory mounting position without modification, making it an ideal choice for restoring your RC crawler after damage or completing a scale build.
For collectors, RC enthusiasts, and anyone who enjoys realistic off-road models, replacing the rear view mirror is a simple way to keep the vehicle looking complete and authentic.
The YIKONG YK4107 RC Car Rear Bumper (Part No. 21208) should be replaced if it becomes cracked, severely bent, or can no longer protect the rear of the vehicle effectively. Although the high-strength nylon construction offers excellent impact resistance, repeated collisions or heavy off-road use can eventually weaken the bumper.
Signs that it’s time to replace the rear bumper include:
Replacing a damaged YIKONG YK4107 RC Car Rear Bumper helps protect the chassis, rear axle, suspension, and body shell from further damage, ensuring your RC car remains ready for demanding off-road driving.
If the YIKONG YK4107 RC Car 60A Brushed ESC (Part No. 21180) is not working properly, the issue may be related to the battery, wiring, receiver, motor, or the ESC itself. Before replacing the ESC, inspect the power supply and electrical connections to identify the cause.
Common reasons include:
Check each item one by one. If the battery, motor, receiver, and wiring all function normally but the ESC still does not respond, replacing the YIKONG YK4107 RC Car 60A Brushed ESC is recommended to restore reliable vehicle operation.
The YIKONG YK4107 RC Car Parts 4.0 E Buckle (21162) can be reused if it remains in good condition and still maintains proper holding force. However, repeated removal, heavy vibration, impacts, or deformation may weaken the clip and cause it to loosen during operation.
Before reusing an E Buckle, check whether it is bent, damaged, or has lost its original spring tension. If the clip no longer fits tightly into the shaft groove, replace it with a new one to help keep the drivetrain, suspension, and steering components of your YIKONG YK4107 RC Car securely assembled.
The YIKONG YK4107 RC Car Parts Pan Head Hex Socket Screws M3×26 (21141) may become loose due to continuous vibration, especially during off-road driving, jumps, or rough terrain. Using incorrect tightening methods, insufficient thread engagement, or installing screws without proper thread locking on metal-to-metal connections can also increase the risk of loosening.
To prevent this issue, make sure the screws are tightened evenly with the correct hex driver. For metal-to-metal connections, apply a small amount of medium-strength (blue) thread locker. Regularly checking the screws after off-road sessions helps keep your YIKONG YK4107 RC Car components securely assembled.
If your YIKONG YK4107 RC Car develops grinding, clicking, or unusual drivetrain noises, the YIKONG YK4107 RC Car Parts Bearing 5×11×4 (21120) may be one of the components that needs inspection. A worn, dry, rusty, or damaged bearing can increase friction and prevent drivetrain parts from rotating smoothly.
Check the bearing for dirt, lack of lubrication, excessive play, or visible damage. If cleaning and lubrication do not solve the problem, replacing the damaged Bearing 5×11×4 is recommended to protect other drivetrain components such as gears, driveshafts, and differentials.
