Shimano Alivio rear derailleur for Surface 604 commuter-series eBikes. The derailleur moves the chain across the cassette gears, providing smooth, reliable shifting across the gear range.
If your shifting has become sluggish, misses gears, or the derailleur has been bent in a crash or impact, this OEM replacement restores precise gear changes. Shimano Alivio is trusted worldwide for consistent performance.
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