The Shimano 105 5701 10 speed 30T is a long cage rear derailleur. Due to this long cage, you can mount a cassette with up to 30 teeth, which is useful for climbing mountains. When riding a triple, you’ll need a long cage derailleur regardless, which makes this Shimano derailleur a perfect fit!
The Wide Link design of this derailleur ensures extra tight and efficient shifting. The large 11-teeth jockey wheels produces less noise and ensure a longer lifespan.
