DISRAELI GEARS

SRAM X-0 20th anniversary medium cage

SRAM X-0 20th anniversary medium cage derailleur main image

This derailleur was produced to commemorate the 20th anniversary of the founding of SRAM in 1987. Particular features included an engraved aluminium hanger bolt, a titanium parallelogram spring, sealed bearing pulleys and a CNC machined carbon fibre outer pulley cage plate.

SRAM’s commitment to innovation was demonstrated by the one-to-one actuation and the use of composites in their original ESP 900 model. But with the X-0 they have gone further and introduced a radically new ‘look’ for a derailleur. This has only been carried off a few times; by the Simplex Tour de France, the Campagnolo Gran Sport and by the Suntour Competition. I hope that the X-0 joins that hallowed list.


  • Derailleur brands: SRAM
  • Country: USA, manufactured in Taiwan?
  • Date of introduction: 2007
  • Date of this example: 2007
  • Model no.: unknown
  • Weight: 197g
  • Maximum cog: 34 teeth
  • Total capacity: 37 teeth
  • Pulley centre to centre: 75mm
  • Index compatibility: 9 speed
  • Chain width: 3/32”
  • Logic: top normal
  • B pivot: two pivots, front sprung and rear unsprung
  • Materials: aluminium, with a carbon composite lower knuckle and outer pulley cage plate.
SRAM X-0 20th anniversary medium cage derailleur additional image 01
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