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Garmin Varia RTL515 holder BMC Roadmachine — image 1
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Garmin Varia RTL515 holder BMC Roadmachine

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Yet another Garmin Varia holder, but fitted for the D-shape seatpost of my 2024 BMC Roadmachine

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Garmin Varia RTL 515 holder for the D-Shape seatpost of the 2024 BMC Roadmachine

Design inspired by Varia RTL515 D Seat Post Mount from @DaveK, but i created it myself from scratch in Solidworks.

Printed in PETG, 0.15 STRUCTURAL with 4 perimeters and 50% infill, organic supports

Part List:

  • 2x Threaded brass inserts M3 short (from CNC-Kitchen or Ruthex or Amazon)
  • 1x ISO 7380-1 pan head srew M4x16 A2 
  • 1x DIN 985 locking nut M4 A2 or a normal DIN 934 nut M4 A2
  • 1x K Edge Garmin insert with 2x DIN 7991 countersunk srew M3 A2

Zinc plated srews and locking nut should work, too…

The holder can be bent open to snap over the seatpost without breaking.

Design update 01.08.2025 Version 4:  Made the entire part less bulky and moved the Garmin mount insert nearer to the seatpost. 

.step file included for further modifing and remixing.

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