All You Need to Know About The Scubapro Mk2 EVO/R105 Regulator in 2025: Standout Features
The Scubapro MK2 EVO/R105 may look basic, but every feature serves a purpose. Built for reliability and ease of use, this setup shines in both training and recreational diving. Below are the key features that make it stand out.
XTIS for Improved Cold-Water Performance
Scubapro’s Extended Thermal Insulating System (XTIS) separates internal metal components from the surrounding environment, helping prevent freezing in cold conditions. This design improves cold-water resistance by up to 50 percent compared to older MK2 models.
Even though this regulator is considered entry-level, it meets EN250:2014 cold-water standards, proving that it can handle dives in cooler waters just as well as tropical conditions.
Reliable Downstream Piston Design
The MK2 EVO’s classic downstream piston is simple, tough, and proven to last. With fewer moving parts than balanced or diaphragm systems, it’s easy to maintain and less prone to failure.
Scubapro increased airflow by around 15 percent in this model by slightly enlarging the piston while reducing the body size. The result is a compact, efficient first stage that delivers consistent air supply at any depth.
A removable stainless-steel orifice also adds to the regulator’s durability and simplifies servicing, making it a favorite for dive schools and rental operations.
Newly Redesigned R105 Second Stage
The R105 second stage brings a modern update to a classic design. It uses a downstream valve mechanism that’s known for reliability and smooth air delivery. The sturdy housing, metal barrel, and anti-scratch front cover make it tough enough for daily use.
It features a VIVA dive/pre-dive switch, giving you better control over free flow at the surface, while the Super-Flow low-pressure hose ensures effortless breathing even at greater depths. The Hi-Flow mouthpiece provides comfort and reduces jaw fatigue, making long dives more enjoyable.
For flexibility, the R105 includes a reversible hose attachment, allowing left- or right-hand configuration—ideal for alternate air setups or stage bottles.
Nitrox Ready and Built to Last
Out of the box, the MK2 EVO/R105 is Nitrox-compatible up to 40 percent, requiring no additional modifications. The combination of chrome-plated brass and stainless steel components ensures resistance to corrosion and long-term durability in saltwater environments.
This regulator isn’t about luxury—it’s about reliability. Whether you’re diving in tropical reefs or cooler coastal waters, it performs consistently with minimal maintenance.
Scubapro Mk2 EVO/R105: Manufacturer's Specification
1st Stage Design: | Piston |
1st Stage Type: | Unbalanced |
Environmentally Sealed | No |
Number of Ports: | 1 High-Pressure (HP) / 4 Low-Pressure (LP) |
2nd Stage Type: | Unbalanced |
Adjustable 2nd Stage: | Venturi switch |
Materials: | Chrome-plated brass body, stainless-steel orifice, technopolymer and rubber components |
Weight: | Approx. 30.6 oz / 868 g (combined first and second stage) |
Regulator Connection: | Yoke, DIN (300 bar) |
Water Temp Range: | Warm, Temperate |
Our Rating: Scubapro Mk2 EVO/R105 Review
Overall Score
4.3/5
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4.0/5
Comfort & Ergonomics
The second stage is compact, lightweight, and easy on the jaw during long dives. The Hi-Flow mouthpiece adds comfort, and the Super-Flow LP hose ensures smooth air delivery. Hose routing is clean and balanced whether used on a single tank or as a backup regulator.
4.0/5
Breathing Performance & Ease of Use
The MK2 EVO/R105 offers smooth, consistent airflow at typical recreational depths. The unbalanced piston design means a slight increase in breathing effort as tank pressure drops, but it remains manageable and predictable. The VIVA switch on the R105 helps prevent free flow on the surface, keeping air delivery steady underwater.
Best suited for warm or moderate conditions, it performs reliably without noticeable fluttering or resistance at depth.
4.5/5
Build Quality & Durability
Everything about this regulator feels solid. The chrome-plated brass first stage and metal-barreled second stage stand up well to corrosion and heavy use. Many dive schools choose it for rental fleets because it can take years of daily wear with minimal issues. The stainless-steel orifice and simple piston design make maintenance straightforward and cost-effective.
4.5/5
Maintenance & Serviceability
This setup is known for its ease of servicing. Parts and service kits are widely available worldwide, and its simple construction allows most technicians to complete maintenance quickly. The regulator’s design also makes it a great choice for divers who want to learn basic servicing or travel to remote destinations where support is limited.
4.5/5
Value for Money
The MK2 EVO/R105 is one of Scubapro’s most affordable full regulator sets. You won’t find adjustable knobs or flashy tech, but you get proven performance, low upkeep costs, and excellent reliability. For beginners, dive centers, or travelers wanting a dependable backup, it’s hard to beat the value.
What We Like:
✅ Reliable Cold-Water Performance with XTIS
The Extended Thermal Insulating System (XTIS) is the highlight of the MK2 EVO design. It significantly improves cold-water resistance, reducing the risk of free flow when diving in temperate or cooler waters. Divers report steady performance even on dives below 50°F, which is impressive for a non-sealed piston regulator.✅ Tough, Long-Lasting Construction
Built from chrome-plated brass and stainless steel, the MK2 EVO first stage and R105 second stage can withstand years of saltwater exposure. Many dive schools use this setup for rentals because it keeps working reliably with minimal servicing, even after hundreds of dives.✅ Simple and Easy to Maintain
With few moving parts, the MK2 EVO/R105 is one of the easiest regulators to service. Replacement parts are inexpensive, and service kits are widely available worldwide. For divers in remote areas or those who prefer to handle basic maintenance themselves, this simplicity is a major advantage.✅ Comfortable Breathing and Lightweight Design
Despite its straightforward mechanics, breathing feels natural and smooth. The R105’s compact design and Hi-Flow mouthpiece make it comfortable for long dives, reducing jaw fatigue. The hose routing is clean and unobtrusive, whether used as a primary reg or backup.✅ Excellent Value for Recreational Divers
You get proven reliability at an affordable price. It may not have adjustable knobs or a balanced design, but for beginner divers or those who want a solid travel regulator, the MK2 EVO/R105 is a smart buy that delivers dependable performance without unnecessary extras.What We Don't Like:
❌ No inhalation adjustment
The R105 lacks any user-adjustable inhalation control, so you can’t fine-tune breathing resistance. This is a non-issue for most divers but limits customization for those who prefer more control.
❌ Unbalanced Design
Because both stages are unbalanced, you’ll notice a slight increase in breathing effort as tank pressure drops. It’s not dramatic, but advanced divers used to balanced regulators might find it less refined at deeper depths or with near-empty tanks.❌ Not Fully Environmentally Sealed
While the XTIS system improves cold-water resistance, the first stage is not fully sealed. In extremely cold or contaminated water, a diaphragm-style or sealed balanced regulator would perform better.❌ Basic Aesthetic and Feature Set
It’s built for practicality, not looks. There’s no adjustable venturi assist beyond the simple VIVA switch, and the finish is utilitarian. Divers who like advanced features or sleek designs may find it plainThe Verdict
The Scubapro MK2 EVO/R105 proves that simplicity still works. It is a no-frills regulator built around reliability, low maintenance, and consistent breathing performance. Every part of its design serves a clear purpose, nothing extra, nothing complicated.
For new divers, it offers an affordable entry point into Scubapro’s proven engineering. For instructors and dive shops, it is a dependable workhorse that can handle years of daily use. And for seasoned divers, it makes an excellent backup or travel regulator that performs well without the need for constant adjustments.
While it lacks the smoothness and precision of a balanced system, it delivers clean airflow, easy servicing, and solid durability. If you value function over flash and want a regulator that works dive after dive, the MK2 EVO/R105 is a smart and trustworthy choice.
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Scubapro Mk2 EVO/R105: FAQ
Frequently Asked Questions
Yes. The R105 second stage features a reversible hose attachment, allowing you to switch the hose from right to left. This makes it suitable for sidemount, stage, or pony bottle configurations where hose routing flexibility is important.
Both share the same first stage, but the S270 second stage is lighter and features improved airflow with updated materials. The R105, however, is more rugged and easier to service, which is why many dive operations still prefer it for rentals or training.
Yes. Both stages use corrosion-resistant materials like chrome-plated brass and stainless steel, making them durable for saltwater use. Regular rinsing after each dive will keep it performing smoothly for years.
Have you tried the Scubapro Mk2 EVO/R105 Regulator? What did you think? Let us know in the comments below! Happy diving!
Scubapro Mk2 EVO/R105 Regulator
The Scubapro MK2 Evo R195 is a great choice for beginner divers. It has an unbalanced design, Scubapro’s VIVA system to reduce free flows and increase breathing comfort, and Scubapro's XTIS system for increased freezing resistance. All of these features combined make this a great value for the money making it a great choice for new divers. It is no wonder it is the preferred training scuba regulator at many dive centers and resorts around the world.
Product Brand: Scubapro
4.3
Pros
- Excellent cold-water performance with XTIS system
- Durable chrome-plated brass and stainless-steel construction
- Simple design that’s easy to maintain and service
- Comfortable second stage with smooth breathing
- Great value for beginners, dive schools, and travel
Cons
- No inhalation adjustment
- Unbalanced first and second stage
- Not fully environmentally sealed
- Limited features and plain appearance