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Kawasaki z1100 bar end mirror handle bar adaptors

Created today

Automotive, RC & Hobbythread-adapterm18x1m6handlebarbar-end-mirrormotorcycleallen-keypetg
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Description

A threaded adapter that steps an M18x1 fine-pitch external thread down to an M6x1 internal thread, made for fitting bar end mirrors to the handlebars of a Kawasaki Z1100. The stud is 16 mm tall with no flange, and a 10 mm hex socket in the base lets it be driven in with an Allen key.

Remix hooks

  • Hex socket size and depth: 10 mm across flats, 5 mm deep. A deeper socket (7 mm was the earlier value) grips a key better but leaves less solid material around the M6 thread. Change the across-flats value to match a different key.
  • Overall height: 16 mm. Taller gives the mirror stem more thread to bite into; shorter reduces how far it protrudes from the bar end.
  • Thread fit: both threads are modelled at nominal size. FDM usually needs 0.1–0.2 mm of adjustment on the M18x1 outside and the M6x1 inside, so print a short test ring first.
  • Add a stop: there is no flange, so insertion depth is set by feel. A thin collar or a shoulder on the mating part would give a hard stop.
  • Pairs with: a lock nut or thread-locking compound on the M6 side to keep a mirror from backing out under vibration.

Starting dimensions

  • External thread: M18, 1 mm pitch
  • Internal thread: M6, 1 mm pitch, through the full height
  • Height: 16 mm
  • Socket: 10 mm hex, 5 mm deep

Check the thread on your actual bar ends before relying on it. Print in a tough material such as PETG or ABS, since the part sees vibration and weather.

Images

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