OP
Eric Sedletzky
Contributor
Yes the MK2 evo is a different animal and that’s why I have to have it.And in the case of the Mark 2 Evo pretty much an entire redesign. The Mark 25 Evo has additional protection from cold water freezing (a spring isolator and a coating on the spring) and if you had a willing shop you could (to my best knowledge) convert a Mark 25 to Evo. In the case of a Mark 17 vs a Mark 17 Evo (or Mark 2 vs a Mark 2 Evo) you cannot convert them to Evo as there were actual changes to the parts and regulator body that cannot be retrofitted. So depending upon the specific model it may just be additional cold protection and in others it is cold protection plus performance enhancements.