Shimano Altus RD-M310 derailleur suitable for 7 and 8 speeds.
- technology: Top Normal (compatible only with Shimano 2: 1 shift)
- Mega pulleys reduce noise and wear (tensioner with 15 teeth and guide pulley with 13 teeth)
- for the largest pinion 28-34 teeth
- for the smallest pinion 11-14 teeth
- maximum tooth difference on the front transducers: 20 teeth
- total capacity: 43 teeth




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