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Bicycle Rear Hanger Derailleur Extension Dark Gray

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Specifications:

Gross weight20g

Bicycle Rear Hanger Derailleur Extension Dark Gray
1. Material : 6061 aluminum
2. Bike Type: Road Biycles  Mountain Bikes
3. Packcing included:1 Pcs
4. FOR Wide Ratio Cassettes
5. High-precision CNC manufacturing to ensure fast gear change.
6. You can use this to easily change the maximum teeth that the rear derailleur adapts.
7. For exmpale , if your derailleur original max for 28T, add this extension, you can use 32T /34T
8. If original max for 36T, it will up to 42/46T
9. If original max for 40/42T, it will up to 50/52T
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