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Description
Description
SCUBAPRO's MK25 Evo / S620 Ti Dive Regulator System pairs a high-performance first stage with a lightweight titanium second stage for versatile scuba diving across cold, temperate, and warm water. The MK25 Evo first stage delivers excellent freezing resistance, superb inhalation sensitivity, and instant air delivery for underwater exploration and day-to-day diving in varying water conditions. The S620 Ti second stage is lighter and more compact than the S600, offering smooth airflow and reduced breathing effort in any dive scenario. With a full titanium barrel, improved water circulation, and XTIS Extended Thermal Insulating System, this regulator delivers reliable performance across all temperatures and environments.
Designed for dependable underwater gear performance, the system uses a DIN connector type and a hose-routing-friendly swivel turret. It combines advanced features such as an air-balanced flow-through piston and user-adjustable controls to support divers in cold, temperate, and warm waters alike.
Features
Features
- Air balanced flow-through piston in a chrome-plated brass body provides constant airflow independent of depth, tank pressure, or breathing rate.
- XTIS Extended Thermal Insulating System thermally insulates the inner mechanism to improve cold-water resistance and delay ice formation without compromising breathing performance.
- Anti-freeze protection enhances breathing reliability in extreme water temperatures.
- Five high-pressure ports on the first stage, with two opposing ports allowing orientation up or down.
- Four high-flow and one axial high-flow low-pressure ports on a swivel turret maximize hose routing options.
- External intermediate pressure adjustment enables quick field tuning by technicians.
- Air-balanced second stage valve smoothes inhalation across depths and supply pressures.
- Full titanium barrel is rugged, anti-corrosion, and lightweight for long-term reliability.
- Large diaphragm in a compact second stage casing for maximum breathing sensitivity.
- Diver-adjustable inhalation effort knob and Venturi-Initiated Vacuum Assist (VIVA) lever for breathing control.
- Hi-Flow mouthpiece with an enlarged mouthpiece pipe to improve airflow and mouth comfort.
- Connector Type: DIN for compatible regulator interfaces.
- Water temperature compatibility Cold, Temperate, Warm.
- 1st Stage Materials Chrome-Plated Brass
- 2nd Stage Materials Titanium Components
- 2nd Stage Design Balanced
- 2nd Stage Valve Housing Material Titanium
- Product weight 2.1 lb
Specifications
Specifications
| 2nd Stage Design | Balanced |
| 2nd Stage Series | S Series |
| Water Temperature | Cold, Temperate, Warm |
| Connector Type | DIN |
| HP Ports | 5 |
| 1st Stage Materials | Chrome-Plated Brass |
| 2nd Stage Materials | Titanium Components |
| Product Weight | 2.1 lb |
| Adjustable 2nd Stage | Yes |
| 2nd Stage Valve Housing Material | Titanium |
Payment & Security
Payment methods
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WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.
Frequently Asked Questions
ScubaPro MK25 EVO vs MK17 EVO2: which first stage should I choose?
The MK25 EVO is a balanced piston first stage — it delivers the highest airflow and instant response, and it is the choice of many performance-focused and warm-to-cold water divers. The MK17 EVO2 is a sealed diaphragm first stage — its internals are isolated from water, which makes it the traditional pick for very cold water and silty or salty conditions with less maintenance sensitivity. Both are excellent; choose the MK25 EVO for maximum performance and adjustability, the MK17 EVO2 for a fully sealed set-and-forget workhorse.
Should I order my ScubaPro regulator in DIN or yoke?
Yoke (INT) is the most common fitting on rental tanks in North America and the Caribbean, so it is the simplest choice if you mostly dive at resorts. DIN screws directly into the tank valve, is rated for higher pressures, and is standard in Europe and technical diving — and a DIN regulator can use a simple adapter on yoke tanks, which makes DIN the more flexible long-term choice for traveling divers. ScubaPro sells both versions, and a yoke regulator can later be converted to DIN by an authorized dealer using a genuine ScubaPro conversion kit (DIN owners going the other way simply use a DIN-to-yoke adapter — no conversion needed).
What is the difference between the MK25 EVO and the original MK25?
The EVO generation added ScubaPro's XTIS (Extended Thermal Insulating System), which improves freezing resistance in cold water, along with updated materials and finishes. The core balanced-piston design that made the MK25 famous is unchanged — the EVO is the same performance with better cold-water protection.
Is the S620Ti second stage good for cold water, and what does the Ti mean?
Ti refers to the S620Ti's titanium components — the inlet tube and barrel are full titanium, making the second stage ultralight and highly corrosion-resistant, housed in a rugged fiber-reinforced technopolymer casing. It is the successor to ScubaPro's legendary S600: smaller and lighter, but with the same-size diaphragm for effortless airflow in all conditions. Paired with the MK25 EVO first stage, the system is cold-water rated.
How often does a ScubaPro regulator need service?
ScubaPro's official recommendation is a full service by an authorized ScubaPro technician every 2 years or 100 dives, whichever comes first. If you dive heavily (100+ dives a year), ScubaPro recommends an inspection every 6 months and an overhaul annually. Staying on schedule also keeps you eligible for ScubaPro's Parts For Life program — free service parts for the original owner when the regulator is registered and purchased as part of a qualifying package from an authorized dealer. As an authorized ScubaPro dealer, we can help with registration and service when it is due.
