DISRAELI GEARS

SunRace 590

SunRace 590 derailleur main image

My memories of SunRace derailleurs are a little foggy, and I have terrible trouble finding historic SunRace literature - so treat what follows with a touch of scepticism.

I kind-of remember the SunRace 590 as being a cheap, plastic, derailleur found on many of those, how-shall-we-say-it, tacky, inexpensive, no-name, mountain bikes you find in big-box retailers. When I look at it today, I see that it contains very little plastic, and seems rather solidly constructed.

I also remember it as appearing at about the same time as the SunRace 595.


  • Derailleur brands: SunRace
  • Country: Taiwan
  • Date of introduction: 1997?
  • Date of this example: unknown
  • Model no.: 590
  • Weight: 296g
  • Maximum cog: 32 teeth? (roughly based on Shimano Deore XT (M739 SGS))
  • Total capacity: 38 teeth? (roughly based on Shimano Deore XT (M739 SGS))
  • Pulley centre to centre: 87mm
  • Index compatibility: 8 speed?
  • Chain width: 3/32”
  • Logic: top normal
  • B pivot: sprung
  • P pivot: sprung
  • Materials: largely steel with an aluminium b-knuckle and a plastic p-knuckle
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