Shimano Deore M591/590 Front Gear

Shimano Deore M591/590 Front Gear

Available in both top swing and conventional swing modes.

Shimano Deore M590

The low-clamp top-swing design can be really useful on some full suspension frames where a higher clamp can't be fitted.

Shimano DeoreM591

The high-clamp conventional-swing design is reckoned to be harder wearing.

True of both models

• Better clearance between tyre and the derailleur's inner chain guard compared with previous models.
• Angled clamp bolt makes it easier to fit.
• Only compatible with 9-speed chains and cassettes.
  
• Made for triple chainsets.
  
• Dual Pull - either front gear works whether your cable is routed down the seat tube or under the bottom bracket.
  
• Multi Clamp - fits any of the common seat tube diameters: 28.6, 31.8 or 34.9mm.
  
• Compatible with 44T and 48T big chainrings.
  
• Mostly aluminium alloy construction, bar the chrome-plated steel chain guide.