Bafang FM G310 G311.250.D Front Hub Nylon Gear Set | 250W Helical Planetary Replacement Gear

Original replacement helical nylon planetary gear kit exclusively for Bafang FM G310(rear)/G311.250.D front geared hub motor, rated 250W 36V/48V city ebike front wheel motor.
Gear spec: 33T sun helical gear +18T inner ring gear, 3pcs double-stage planet nylon gears with thrust needle bearings per set, G311 front gear thicker & opposite spiral direction vs G310 rear version.
High toughness modified PA66 nylon, low noise helical tooth design, good shock absorption, protect stator & controller from overload damage.
Full OEM dimension, direct plug-and-play replacement for broken, worn, slipping original gears for front hub motor maintenance.