Current Stock: 19
●Use for T-REX 550E / 600E PRO / 600EFL PRO.
●Front drive gear assembly x 1 (Φ4xΦ4.5x51mm) Modulus:0.8 ●Front umbrella gear(20T) x 1(Φ21.2x33.6mm)●Tail umbrella gear(20T) x 1(Φ21.2x12.5mm)