Poseidon Jetstream/Xstream 2nd Stage Mk3 vs Classic - are there any differences?

[James Ocean]

Hi all,

Are there any differences between the Mk3 and Classic models for the Poseidon Jetstream or Xstream 2nd stage regulators?

Does the Mk3 breathe differently to the Classic version?

 

[Bigbella]

Hi all,

Are there any differences between the Mk3 and Classic models for the Poseidon Jetstream or Xstream 2nd stage regulators?

Does the Mk3 breathe differently to the Classic version?

No, the second stages are the same; and I’ve often swapped out far older regulators, including the Cyklon, for use on Xstream firsts . . .