• The Helix Plus Double Stroller Upgrade Kit does not work with the generation-one stroller frame, and can only be installed on the Orbit Baby Stroller Frame G2.
  • The Sidekick Stroller Board does not work with the generation-one stroller frame; it can be installed on the Orbit Baby Stroller Frame G2, as well as on the Double Helix Stroller Frame when used in "single mode" (without the back SmartHub Attachment attached).
  • The Stroller Panniers work on all Orbit Baby Stroller Frames.