Its narrow-wide design minimizes chain derailment. Lightweight: Crafted from CNC 6061 Aluminum Alloy, it weighs about 209g, and its lightweight design enhances cycling efficiency and comfort. Easy Installation: The chainring ensures easy installation by aligning the wide teeth with the outer link plates and the narrow teeth with the inner links. Product Name:Mid-drive Motor Chainring 42T Offset Sprocket for BAFANG 250-750W Motor. Size:179.5 mm (Diameter), suitable for.
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