This is a replacement Align 131 Tooth M0.8 Autorotation Tail Drive Gear Assembly, and is intended for use with the Align T-REX 550, and 600E Pro.
- (1) Autorotation Tail Drive Gear (131T,M0.8)
- (1) Tail Drive Gear
Note: In order to use this tail drive gear assembly on a T-REX 550, the helicopter must be equipped with the slanted gear setup. To determine if your helicopter uses slanted gears or straight-cut gears, observe the main drive gear which will either have slanted or straight-cut teeth.