The MK19 EVO/G260 is purpose-built for technical diving as well as cave diving. The MK19 EVO offers an environmentally sealed system that is extremely resistant to freezing plus prevents water and pollutants from fouling its inner mechanism, along with a dry ambient pressure chamber equipped with a double spring and a LP port swivel turret to maximize hose routing options. Teamed with the G260, with its metal internal components, high-flow exhaust valve, diving controls and reversible hose attachment, you've got a top-performing regulator system for the most extreme conditions. It's quickly become the most popular regulator with our local Great Lake shipwreck divers.

DIN or Yoke  - Just let us know in the comments.  The part number is YOKE but we have magical powers and can make the switcheroo! 

The hose routing of the MK25evo with the guts of the MK17evo (kinda)

• Air balanced second stage valve smoothes out the inhalation effort at varying depths and supply pressures. 
• A diver-adjustable inhalation effort knob fine-tunes air delivery to suit changing depths, water conditions and personal tastes, and a Venturi-Initiated Vacuum Assist (VIVA) dive/pre-dive switch prevents free flows in cold water or when used as an octopus. 
• High-flow exhaust valve reduces exhalation for better overall breathing comfort, and the reversible hose attachment allows you to easily adjust hose routing for tech diving configurations. 
• Super-flow hose features an oversized bore that allows more air to flow on each inhalation. Air-balanced first stage diaphragm delivers constant and effortless airflow unaffected by depth, tank pressure, or breathing rate 
• Environmentally sealed system prevents water and pollutants from fouling the inner mechanism and is extremely resistant to freezing 
• Dry chamber is equipped with a double spring making it more compact and reliable. 
• Two opposing high-pressure ports allow the first stage to be positioned either up or down, plus provide for an optimum hose/transmitter layout 
• Swivel turret comes with four High-Flow LP ports plus one axial Super High-Flow LP port to maximize hose routing options for technical diving layouts