1,349.99 $

SKU: SP.12.420.000 Category: Tags: , , ,

Additional information

Weight 3 kg
Dimensions 35 × 25 × 15 cm


1st stage

Released in 2004 the MK25 quickly rose to the top of piston design regulators. It is very reliable and durable while delivering extra-high and effortless airflow, regardless of depth, tank pressure or breathing rate. Another substantial upgrade was added in 2016: SCUBAPRO’s Extended Thermal Insulating System (XTIS) – the reg was renamed: MK25 EVO.

Enjoy now all the advantages of the MK25 – even in extreme cold-water conditions! This is made possible by completely isolating all moving parts of the first stage from the cold. The patented XTISystem increases the freezing resistance of the already very resistant former MK25 by 30% without compromising its excellent breathing performance. The main insulation system components are visible in blue.

A new insulating coating for the spring, body insulating bushing on an overall bigger body, anti-freeze cap and cap thread all work together with the XTIS to improve cold-water performance.

The MK25 EVO features a swivel turret with 4 high-flow LP ports and 1 axial super high-flow port on the top (high-flow ports deliver about 15% more air than conventional low pressure ports). 2 HP ports give you the choice of installing your 1st stage head-up or head-down. The intermediate pressure can be adjusted externally to allow technicians to perfectly fine tune your regulator’s performance without disassembling it.

2nd stage

The D420’s breathing experience comes closer to breathing at the surface than any other’s.

It features a newly designed balanced valve supported by a full metal valve housing (barrel). The new Progressive Flow Control Valve delivers an abundance of airflow for outstanding breathing performance. The inhalation diaphragm is positioned on the lower part of the regulator housing to take advantage of the pressure gradient in vertical position which further facilitates inhalation (meant is the position of the reg when in your mouth, not the position of the diver in the water!)

Exhalation effort is dramatically improved by winglets on the inside of the casing that direct the airflow towards the exhaust valve.

The unmatched design is created by an ultra-durable fiberglass-reinforced nylon casing. A technical jewel is the highly efficient purge button that can easily be operated with even the thickest gloves.

Sidemount divers will be happy to hear that the LP hose can be attached on either side of the casing. The new dive/pre-dive system is operated with just a tab of a thumb on the switch placed on top of the housing.


Designed for cold water diving and Nitrox ready up to 40%

1st stage

  • Body material: marine-grade, chrome-plated brass
  • Patented XTIS (Extended thermal Insulating system)
  • Air-balanced flow-through piston
  • 2 HP ports
  • 5 LP ports
  • Swivelling turret head
  • Available in INT and DIN 300
  • Airflow at 2900psi: >8500 l/min = 301SCFM
  • Intermediate pressure: 130-142psi/9-9.8bar
  • Weight: INT: 1.74lbs/790g – DIN: 1.26lbs/572g

2nd stage

  • Air-balanced
  • Casing material: fiberglass-reinforced nylon
  • Valve housing (barrel) material: full metal
  • Extra large purge button
  • Unique venturi system (dive/pre-dive switch)
  • Oversized bore and super-flow hose allow higher air-flow
  • Left or right hose attachment
  • Weight: 0.47lbs/216g (without hose)
  • Airflow at 2900psi/200bar: 1800 l/min

Service interval: 24 months or 100 dives – whichever comes first

All SCUBAPRO 1st and 2nd stages are covered by a limited lifetime warranty. If bought together with a SCUBAPRO BCD and computer they participate in SCUBAPRO’s “parts for lifetime” program. Restrictions apply (valid for original owner and at regular service intervals)!


Ships within: 1-4 business days

We reserve the right to upgrade your shipping method to Purolator shipping. If you do not wish that for your order please let us know in the order notes at checkout.

We are an environmentally conscious company! We only print on recycled or FSC certified paper and we recycle shipping boxes. Please be aware that your item might arrive in a box with a different brand name.

Together with your tracking number you will receive an electronic invoice. If you wish to have a printed version of your bill in addition please leave a note with your order and we’ll include it in your box.

SCUBAPRO produit registration

SCUBAPRO comparison chart 1st stages

SCUBAPRO comparison chart 2nd stages