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 according to the factory layout and secure the housing with the original screws. Pay attention to the orientation and position of each part to ensure proper gear engagement.
Once assembled, manually rotate the wheels to verify smooth drivetrain operation. A short low-speed test is recommended to confirm that the rear axle functions correctly before returning the YIKONG YK4107 RC Car to normal use.
In addition, we also offer upgraded metal front and rear portal housings for the YIKONG YK4107 RC Car. Compared with the stock plastic housings, the metal versions provide greater strength and durability, making them better suited for crawling, off-road driving, and demanding terrain. They can withstand higher impact and drivetrain loads while also enhancing the overall appearance and scale realism of the vehicle, making them a popular upgrade choice among RC enthusiasts.
