Exclusive replacement helical nylon gear for Bafang MM G330 M400 Max Drive mid torque motor, fit 250W & 350W 36V/48V ebike mid-mounted system, max torque 80Nm.
Two production versions in stock:
✅ New version: 4mm groove depth, matched 46mm height bearing
✅ Old version: 6mm groove depth, matched 44mm height bearing, two versions non-interchangeable.
Made of high toughness modified PA66 reinforced nylon, low running noise, excellent wear resistance & shock absorption, effectively solve gear crack, slipping, abnormal rattling after long riding.
Strict OEM dimension, direct plug & play installation for M400 motor maintenance, widely used on city & trekking electric bikes.
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