The microSHIFT M55 has a certain style. Perhaps it is a touch derivative of a SRAM design, and the inner parallelogram plate would not be out of place on the tackiest Chinese copy of a Shimano Tourney - but these things apart, the M55 looks and feels pleasant.

Another interesting effort from microSHIFT.

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• Derailleur brands: microSHIFT
• Country: Taiwan
• Date of introduction: 2008
• Date of this example: 2007?
• Model no.: M55
• Weight: 227g
• Maximum cog: 34 teeth (source: microSHIFT)
• Total capacity: 45 teeth (source: microSHIFT)
• Pulley centre to centre: 98mm
• Index compatibility: 9 speed
• Chain width: 3/32”
• Logic: top normal
• B pivot: unsprung
• P pivot: sprung
• Materials: Largely aluminium (including the hanger bolt), with plastic front knuckle and steel inner parallelogram plate.

Ref. 397