Following the failure of their 1983 ‘Tech’ series derailleurs, and the tepid response to the 1981 aRX and BL, SunTour suddenly found their world collapsing around them. Their response was to reach back ten years to 1976, a time of certainties before the onslaught of indexing, aerodynamics and the ‘yen shock’, and revive the iconic Vx series with a 1986 makeover.

The SVX series was the result. It had a smoother look, lots of Allen key bolts and rather pleasant ‘gun-metal blue’ anodising on the outer parallelogram plate. The pulley cage plates were SunTour’s highly sculpted versions that were optimised for 7 speeds.

But it really was the last hurrah for the ‘V’ series - no amount of make-up could hide the fact that this was mutton dressed as lamb.

The end of an era.

This example is the ‘SS’ short pulley cage version.


  1. Brand: SunTour

  2. My category: SunTour - the V story

  3. Country: Japan

  4. Date of introduction: 1986

  5. Date of this example: 1988 (two letter date code is EA)

  6. Model no: 7300

  7. Weight: 216g

  8. Maximum cog: 28 teeth (28mm hanger) (Source: Sutherland’s 6th Edition)

  9. Total capacity: 26 teeth (28mm hanger) (Source: Sutherland’s 6th Edition)

  10. Pulley centre to centre: 55mm

  11. Index compatibility: friction

  12. Chain width: 3/32”

  13. Logic: top normal

  14. Pivots: two pivots, front sprung and rear unsprung

  15. Material: aluminium


SunTour SVX SS (7300)