DISRAELI GEARS

Super-Inax Sport

Super-Inax Sport derailleur main image

This derailleur was amazingly innovative. It is a proper parallelogram design, mounting on the drop out, with a low gear stop screw. With all this technology it came on to the market 8 years before Campagnolo’s Gran Sport.

Why is it a forgotten irrelevance? Possibly because of a lack of marketing punch, and probably because it was a single pulley design - and so doomed to deliver a relatively sloppy change.

I know of four variations of this basic design:

  • A bronze version branded Super JIC which has a cable adjuster and a relatively slim outer parallelogram arm.
  • An aluminium version also branded Super JIC which also has a cable adjuster, but has a chubbier outer parallelogram arm.
  • An aluminium version that is identical to the aluminium Super JIC, except that it has no cable adjuster and is unbranded and sold as the Super-Inax Sport.
  • A steel version that is branded Super JIC and has a cable adjuster, but has a very different b-knuckle and a differently shaped pulley cage.

At one point or another, this design of derailleur seems to have been called JIC Champion Sport, Super-JIC 49, Super-JIC Sport, Super JIC Course or Super-Inax Sport. I have decided to run with just two of these: Super JIC Course and Super-Inax Sport.

Finally I would note that these derailleurs share a number of distinctive small parts with the earlier (and very weird) Super-Inax models with a b-pivot that allows movement in both the vertical and horizontal plane. They all clearly come from the same factory.


This is an example of the aluminium Super-Inax version described above. Some of its features are

  • It has an aluminium b-knuckle with the top parallelogram pivot about 40mm below the b-pivot.
  • It does not have a cable adjuster.
  • The outer parallelogram arm is aluminium and is somewhat chubby, with no lightening hole drilled in the flange.
  • The pulley wheel is 34mm in diameter.
  • The pulley cage plates are relatively large.
  • It has a rather dull silver/grey finish.
  • It has no branding anywhere on it.


  • Derailleur brands: Super-Inax, manufactured by JIC?
  • Country: France
  • Date of introduction: 1942?
  • Date of this example: unknown
  • Model no.: unknown
  • Weight: 241g including hanger plate
  • Maximum cog: 22 teeth?
  • Total capacity: 8 teeth
  • Pulley centre to centre: not applicable
  • Index compatibility: friction
  • Chain width: 3/32” and 1/8”?
  • Logic: low normal
  • B pivot: sprung
  • P pivot: none
  • Materials: aluminium rear knuckle and parallelogram arms, steel front knuckle, pulley cage plate and hanger plate.

Ref. 407

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