MK25 EVO S270  - This combo is a Motor City Scuba exclusive.

Divers looking for solid performance in a regulator system and ready to step up from their entry-level systems are going to love the MK25 EVO/S270. The S270 second stage features an air-balanced design whose compact casing and internal aerodynamics produce extremely low work of breathing. Teamed with SCUBAPRO’s MK25 EVO, a balanced piston first stage with internal components specifically designed to resist freezing in extreme cold-water conditions, this regulator combo is affordable and durable while delivering smooth and reliable breathing performance.

• Lightweight S270 casing, made of a fiberglass-reinforced nylon core and a special PU outer layer, is extremely durable plus helps reduce jaw fatigue and improves diving comfort
• Technopolymer plastic barrel with a metal thread and a balanced valve helps save weight and provides a surface that ice crystals can't grab onto when diving in extreme cold water.
• Air-balanced valve smoothes out the inhalation effort when diving at varying depths and supply pressures.
• Dive/predive switch is easy to use even wearing thick gloves.
• Compact and efficient exhaust tee minimizes exhalation effort
• Super-flow hose features an oversized bore that allows more air to flow on each inhalation.
• Compact Hi-Flow mouthpiece improves airflow as well as mouth comfort, fitting all mouth sizes, from largest to smallest.
• Air balanced flow-through piston first stage design delivers consistent and effortless airflow, regardless of depth, tank pressure, or breathing rate.
• Patented XTIS (Extended thermal Insulating system) fully insulates the inner mechanism from the environment, improving cold-water resistance by 30% and delaying ice formation in extreme cold-water conditions without compromising breathing performance.
• Anti-freeze protection radically increases breathing reliability when diving in the most extreme water temperatures.
• Two opposing high-pressure ports allow the first stage to be positioned either up or down.
• Four high-flow and one axial super high-flow low pressure ports on a swivel turret maximize hose routing options.