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YIKONG YK4107 RC Car Parts Tires 21099 Some users have tried RC4WD 2.2 narrow tires (118.6 × 40.75mm), which are slightly larger than stock and require attention to body clearance. The YIKONG YK4107 RC Car stock tires 21099 are 116mm × 42mm.

YIKONG YK4107Pro 1/10 RC Car Parts Wheels 21228 This is a common Yikong issue. Users report it can be mitigated by adjusting the front bumper position, switching to narrower tires (such as 110mm diameter), or using 12mm thin hex hubs to pull the wheels inward by 3mm.

YIKONG YK4107 RC Truck Parts Chassis Beam Front Rear Counterweights 21176Optional front and rear counterweights (front axle counterweight 21174, rear axle counterweight 21175, chassis beam front/rear counterweights 21176) can adjust the center of gravity. Third-party options for the YIKONG YK4107 RC Car include brass front wheel weights and metal chassis...

YIKONG YK4107Pro 1/10 RC Car Parts Light Control Box 21181The light system connects via dedicated plugs. Parts include: light control box 21181, headlight board 21200 (PH2.0 plug), taillight board 21201, roof light board 21202, and light wiring harness set 21203. Check the connections and the transmitter's light control channel.

YIKONG YK4107Pro RC Car Parts Brake Friction Linings 21091 Tank Turn relies on the transmitter's mixing function, which is pre-programmed on the stock transmitter. Excessive wear on the brake pads (21091) or binding of the brake cam shaft (21089) can affect Tank Turn performance on the YIKONG YK4107 RC Car....

The differential locks are controlled by 17G servos (part number 21110), with each function (front diff lock, rear diff lock, shifting) requiring an independent 17G servo. Check the corresponding channel settings, servo connections, and whether the linkages are binding. The diff lock wire fixed post is part number 21016.