The SHIMANO,ERDM5120SGS Deore Deore M5120 rear derailleur is a high-quality component designed for 10/11-speed bikes. It features the innovative Shadow+ technology, which provides a low profile design and a more stable shifting performance. The SGS long cage design allows for a wider gear range, making it suitable for a variety of riding styles and terrains.

This rear derailleur is made by SHIMANO, a trusted brand in the cycling industry known for their precision engineering and durable products. The black color adds a sleek and stylish touch to any bike.

The SHIMANO,ERDM5120SGS Deore Deore M5120 rear derailleur is designed to provide smooth and precise shifting, even under heavy loads. It is also equipped with a clutch mechanism that reduces chain slap and improves chain retention, ensuring a quieter and more secure ride.

This rear derailleur is easy to install and adjust, making it a great choice for both experienced cyclists and beginners. It is also compatible with a wide range of cassettes and chainrings, giving riders the flexibility to customize their gear ratios.

Overall, the SHIMANO,ERDM5120SGS Deore Deore M5120 rear derailleur is a reliable and high-performing component that will enhance the performance of any 10/11-speed bike. Whether you're a casual rider or a serious cyclist, this rear derailleur is a great choice for your next upgrade.