●Use for T-REX 250.
●Newly designed main gear mount to simplify gear replacement, and improve overall aesthetics of main gear system.
●New main drive gear (120T) x 2
●Main gear case x 1
●Bearing 683 x 1 (Φ3xΦ7x2mm)
●One-way bearing HF0306 x 1 (Φ3xΦ6.5x6mm)
●Cross screw x 4 (T1.5x4mm)
●Space x 1 (Φ3xΦ4.8x0.5mm)