Scubapro G260 MK25 EVO Regulator with R105 Octopus
Scubapro R105 Octopus
Scubapro G260 regulator
Scubapro MK25 EVO Regulator
Scubapro MK25 EVO Regulator
Scubapro G260 MK25 EVO Regulator with R105 Octopus

Scubapro G260 MK25 EVO with R105 Octopus

Sale price£699.00 Regular price£855.00
Save £156.00

Scubapro G260 MK25 EVO Regulator with R105 Octopus combines Scubapro’s flagship first stage with a second stage engineered to excel in harsh conditions.

DIN or A-Clamp?

DIN or A-Clamp?


Dispatched in 1 to 2 days

Contact Form & Details

How can we help?

If you need to contact us for any issue or assistance, you can do so online by filling out the online Contact Form, emailing us at or calling us on +44(0)1305 824 555. If it's about a purchase you've made for us please also include your order number.

Our brick-and-mortar store Underwater Explorers based on Portland, Dorset is staffed 7 days a week, including weekends and bank holidays. As it's an active store visited by divers from around the country and world regularly, if we can't make it to the phone for any reason please leave a message and we'll get back to you asap.

Any queries are usually answered the very same day and at most within 24 hours.


Why Portland?

We’re located on the Isle of Portland (in Dorset) because Portland has been one of the most popular scuba diving locations in the United Kingdom even before we set up operations here back in the year 2000.

On one side, we’re minutes away from the sheltered waters of Portland Marina and Harbour, while on the other, it’s just a brief walk to reach our famous scuba diving destination Chesil Cove and start of the 16-mile-long Chesil Beach.  

Portland’s location makes it ideal for scuba diving, freediving, snorkelling and other surface water sports activities. 

Check out how many wrecks we have around here by clicking on Scimitar Diving's Wreck & Dive Sites chart!

Alongside dive clubs, many instructors and dive schools travel here to train and offer scuba diving certification ranging from open water diver to mixed-gas tech diving or rebreather diving levels.

Whether you’re doing a boat dive from Portland Marina or Castletown or a shore dive at Chesil Cove, Portland is well known for offering many possibilities: Reef diving to wreck diving and night diving, underwater photography or underwater videography. Anything other than cave diving is possible here.

Likely being the best-stocked diving shop in the UK, at Underwater Explorers we offer in-store scuba diving equipment advice and sales, as well as gas fills, to locals and visitors (read About Us).

But... If you’re googling “scuba diving shop near me” like some, look no further, there's DirDirect online.

Here at DirDirect, we list our cutting-edge equipment for worldwide delivery and we’ve got you covered whatever your level of diving: We’re your local dive store wherever you are in the world.

All that with over 20 years of experience especially in technical diving, from training to equipment, advice and sales.


Underwater Explorers, Unit 1, Maritime Business Centre
Mereside, Portland, Dorset, DT5 1FD


Scubapro G260 MK25 EVO with R105 Octopus combines Scubapro’s flagship first stage with a second stage engineered to excel in harsh conditions. You get a system that any diver can take on any dive, anywhere in the world, and be assured of rock-solid performance and reliability.

The Scubapro MK25 EVO first stage delivers an ultra-fast breathing response, great sensitivity and extra-high airflow, making it the ultimate do-it-all first stage for all water temperatures.

The Scubapro G260 second stage is the most imitated air balanced second stage of all time. It smoothes out the inhalation effort at varying depths and supply pressures.

The Scubapro R105 Octopus offers dependable breathing performance in a classic downstream design with a dive/pre-dive VIVA switch and reversible hose attachment.

Scubapro G260 MK25 EVO with R105 Octopus includes

  • Scubapro MK25 EVO Piston First Stage
  • Scubapro G260 Adjustable Second Stage
  • Scubapro R105 Octopus
  • Scubapro High-Flow Regulator Hose
  • Scubapro High-Flow Octopus Hose

    G260 delivers ultimate breathing sensitivity

    Scubapro G260 second stage offers effortless air delivery and outstanding reliability, this is the go-to second stage for cold water or technical diving with a chrome-plated marine-grade brass body.

    A diver-adjustable inhalation effort knob fine-tunes air delivery to suit changing depths, water conditions and personal tastes. A Venturi-Initiated Vacuum Assist (VIVA) dive/pre-dive switch prevents free flows in cold water.

    Rugged reinforced technopolymer design features Scubapro’s largest second stage casing and diaphragm for the ultimate breathing sensitivity, regardless of position in the water.

    High-flow exhaust valve reduces exhalation for better overall breathing comfort.

    Scubapro G260 features metal internal components and a left-right hose attachment option, making it a great choice for tech diving configurations and a consistent top-of-the-line performer. Metal components (inlet tube, orifice, inhalation control knob and hose connector) increase resistance to freezing when diving in extreme conditions.

    The ultra-comfortable orthodontic mouthpiece is easy to grip yet doesn't inhibit airflow.

    • Nitrox compatible up to 40%
    • Weight: 9.7oz/275g
    • Airflow at 2900psi/200bar: 1800 l/min - 64 SCFM
    • Maximum low pressure: 203psi/14bar

    MK25 EVO is cold water rated

    Scubapro MK25 EVO first stage lets you enjoy an ultra-fast breathing response, instant air delivery on demand, great sensitivity and extra-high airflow - regardless of the water’s cold.

    Air-balanced flow-through piston design provides constant and effortless airflow unaffected by 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 extreme water temperatures.

    Scubapro MK25 EVO First Stage Regulator is CE certified according to the latest EN250A European Standards for all diving conditions, including extreme cold water.

    Two high-pressure and five high-flow low-pressure ports on a swivel turret maximise hose routing options.

    External intermediate pressure adjustment enables technicians to fine-tune performance quickly and easily.

    • Nitrox compatible to 40%
    • Weight: 572g
    • Airflow at 2900psi (l/min/SCFM): >8500/301
    • Intermediate pressure 9-9.8bar
    • 2 High Pressure Ports
    • 5 Low Pressure Ports
    • Chrome-plated brass

    Scubapro R105 Octopus features

    The Scubapro R105 Octopus offers dependable breathing performance in a classic downstream design with a dive/pre-dive VIVA switch and reversible hose attachment.

    Compact Hi-Flow mouthpiece improves airflow and comfort, fitting all mouth sizes, from largest to smallest.

    The high-viz yellow super-flow hose is 39in/1m long and has an oversized bore allowing more airflow on each inhalation.

    • Classic downstream valve design for dependable breathing performance.
Dive/pre-dive VIVA switch helps control free flows. 

    • Metal valve housing is built rugged and increases 
overall reliability. 

    • Reversible hose attachment makes it easy to use on 
pony or deco tanks. 

    • The high-viz yellow super-flow hose is 39in/1m long and 
features an oversized bore that allows more air flow 
on each inhalation. 

    • Compact Hi-Flow mouthpiece improves airflow as well 
as mouth comfort, fitting all mouth sizes, from largest to smallest. 

    DIN or A-clamp first stage?

    Most of our divers prefer DIN fitting on the 1st stage regulator. A DIN regulator has a threaded post which screws into the inside of a DIN tank valve and has no additional metal or braces that run behind the valve. This, together with the position of its o-ring, creates a more secure seal on the tank.

    YOKE (or A-Clamp) 1st stages have an oblong metal brace that completely encircles the tank valve when in place and is screwed down on the tank valve when the yoke screw is tightened.

    Both regulators seal to the scuba tank through an o-ring where the o-ring on a Yoke valve is in the tank valve itself as opposed to DIN regulators with their own o-ring.

    DIN fittings are commonly accepted as more secure, but Yoke valves are common throughout North America and recreational tourist destinations. A DIN regulator can be adapted to Yoke valves by using an A-clamp adapter for travel.

    SKU: 12.252.925