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And here it is... Shimano’s very first mountain bike derailleur. This first version of the Shimano Deore XT (M700) is a subtle blend of the Shimano Deore (DE20) - see that Centeron lever - and the Shimano New 600 EX (6207 GS) - with its clean, uncluttered lines and straight-forward pulley cage.


The Deore XT (M700) appeared a year later than the SunTour MounTech - but still ran off with the mountain bike crown because of what it lacked - complexity. Shimano claim all sorts of stuff about improved seals on the sprung pivots and other off-road refinements - but I am never quite sure about the reality of this. Mainly the Deore XT (M700 1st style) was a well-made, simple, strong gear, that had the good luck to appear just when the market was looking for a well-made, simple, strong gear. But then, luck is what happens when preparation meets opportunity.


Personally I liked the New 600 EX better - that Deer Head logo still seems too hunting-lodge-kitsch - you can almost hear the skirl of the pipes and feel the itch of Harris Tweed against your skin - or perhaps Woody Allen might shoot you and strap you to his car fender... But I did appreciate that the adjustable cable outer stop and the Centeron lever were handy features when using the long cables that thumbshifters required.


A milestone in derailleur history.


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  1. Brand: Shimano

  2. My category: Shimano - the Deore XT story

  3. Country: Japan

  4. Date of introduction: 1983

  5. Date of this example: 1983 (two letter date code is HH on the pulley cage plate)

  6. Model no: M700

  7. Weight: 236g

  8. Maximum cog: 34 teeth (Sutherland’s 6th edition)

  9. Total capacity: 40 teeth (Sutherland’s 6th edition)

  10. Pulley centre to centre: 85mm

  11. Index compatibility: friction

  12. Chain width: 3/32”

  13. Logic: top normal

  14. Pivots: two sprung pivots

  15. Material: aluminium with a steel Centeron lever and inner pulley cage plate

0086/C

Shimano Deore XT (M700 1st style)

Shimano_Deore_XT_derailleur_%28M735_SGS%29.html
Shimano_Deore_derailleur_%28DE10%29.html