Sorry, this product is no longer available!
Shimano Deore M591 Rear Derailleur – 9 Speed is no longer available at Merlin Cycles. However you may find an alternative or updated product below.

This item was discontinued 12th February 2019.

If you require help finding an alternative to this product please contact customer services.

Code: RDM591SGS-Silver
Shimano Deore M591 Rear Derailleur – 9 Speed


The Shimano Deore M591 rear derailleur features a wide link design which significantly increases its rigidity and service life. A ‘top normal’ return spring works in combination with Shimano Rapidfire shifters while its lightweight construction is durable too thanks to its steel and alloy construction.



  • Low friction fluorine-coated link bushings
  • 8 and 9 speed compatible
  • Compatible with 3t low sprocket
  • Large 11 tooth pulley wheels