B: Wheel hub rotation + modified differential. C: Modified differential. 1:12 Scale: Perfectly scaled at 1:12 for precise compatibility with12428/12423 RC models. A: Wheel hub rotation + 2 drive gears.
Replacement Metal Differential Gear Set for WLtoys 12428 and 12423 1 12 Scale
12 Scale Metal Differential Gear Set for WLTOYS 12428 12429 RC Car Replacement
Metal Differential Gear for WLtoys 12428 12423 1 12 Scale Off Road RC Car Parts
12 Scale Metal Differential Gear Set for WLTOYS 12428 12429 and JJRC RC Cars
