Features:
1. CNC machined aluminum protective cover.
2.Fitted with metal internal gears and bearings.
3.Suit for 1/18 TRX4M Bronco Defender RC Crawler Car.
4. Stabilize the front and rear differential parts and gears, and rotate smoothly.

Model: Fast Model /Normal Model:
1. Normal Gears Reduction Ratio in the Gearbox 16.6:1Reduction Ratio.
2. Fast Model Reduction Ratio in the Gearbox 9.7:1 Reduction Ratio.
3. Speed Reducer Model Reduction Ratio in the Gearbox 40.3:1 Reduction Ratio.

Specifications:
Material: metal/aluminum alloy.
Quantity: 1Pcs.
Color: Black.
Size:As the picture show.
Net Weight: 80g.
Package Includes:
1Set * RC Transmission Case