GT DD PRO Shaft dimension


i would like to know shaft diameter for change clamping collar

i have some connecting problem with original collar

(Sry for my bad english)


  • You have to get the black collar to touch the hub. There is really too much space between the two elements. Keep in mind that the hub is tapered, and if you put the black clamp this far apart, the more you tighten the more the hub will be pushed out.

  • The black collar is already touch the hub. But my csl dd disconnected sometimes.

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