25XR - CR Full Tek Set

Product No: 416403


The Mares 25XR-CR regulator has the ideal features for mounting it on a double tank. Compact and sturdy, and with outlets on one side only, a unique positioning is defined. Ideal not only for double tank but also for extended range divers using a single tank. The Second Stage CR is a high performance regulator, specifically designed for cave diving. It can be opened underwater for cleaning and easily reassembled.

Product Information


Mares has developed the 25XR underwater regulator to mainly meet the needs of divers using the twin tank. Its compact size makes it usable also by extended range divers for assembling it on the single tank. The first stage immediately strikes any technical diver's eye, due to the presence of Lp and HP outputs positioned on one side only. Indeed, this model was created to have an assigned position; inside the kit, a first stage will be positioned on the right and the other on the left. The hose exits are positioned so that they fall behind the diver during assembly. This feature makes it ideal for cave diving or in environments with limited passages. This second stage boasts a very aggressive look, and uses the mesh grid system to optimize the inlet and outlet water flows.

This set includes:
• 2 DR second stages
• 2 25XR first stages
• 2 hoses (60 cm - 210 cm)
• 1 elastic collar
• 1 carabiner

The key featrures of the complete 25XR-CR Technical Set are:
• High performance second stage
• Stable flow without excessive positive breathing pressure (VAD - Vortex Assisted Design)
• Slightly negative buoyancy
• The design of the mesh grid disperses the flow of water over the membrane, drastically reducing self-delivery
• Easy to purge
• Innovative Miflex hose in carbon/titanium coated with polyurethane:
• High resistance to cuts, abrasions, explosions and UV rays - less buoyancy
• Watertightness
• Flexible and comfortable
• Meets the respiratory effort requirements of EN250 and NORSOK U-101 at a depth of 320 m at a respiratory rate of 62.5 l/min using a mixture of 1.6% oxygen in helium (as per NORSOK U-101 standard).


Ultralight Technopolymer
First stage:
Balanced Diaphragm
High pressure ports:
1 [7/16" UNF]
Low pressure ports:
2 [3/8" UNF]
Second Stage 1:
Technopolymer second stage
Second Stage 2:
Standard downstream valve
Flow Rate (STP):
560l/min - 20ft³/min
Weight (without hose):
193g / 7oz
Hose length:
60cm / 24in - 210cm / 7ft


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    ACT Valve - Advanced Coating Technology

    ACT Valve - Advanced Coating TechnologyAdvanced Coating Technology
    The new valve in the “X” systems increases durability by an astounding 600%, even under the most extreme conditions.

  2. All Metal Technology
    All Metal Technology

    All Metal TechnologyOutstanding mechanical reliability and high thermal conductivity make our metal 2nd stages extremely long lasting and ideal for cold water dives. The high thermal conductivity of metal reduces also the dry mouth feeling during the dive.

  3. DFC - Dynamic Flow Control
    DFC - Dynamic Flow Control

    DFC - Dynamic Flow ControlMinimizes intermediate pressure drop during inhalation thus maximizing gas delivery, especially under extreme conditions.



Please follow the instructions contained in the manual. You must read and understand all warnings and instructions in their entirety before using our products. Scuba diving is a hazardous activity, which involves a risk of injury to any and all parts of the body. As with all scuba diving equipment, our products are designed to be used by trained, certified divers only.

Regulator Special Disclaimer
Equipment complying with EN 250 is not intended for breathing by more than one user at the same time.

If SCUBA equipment is configured and used by more than one diver at the same time, the cold water and breathing performance may not fulfill the requirements of EN 250. Therefore, the octopus should not be used during dives in cold water. Use of the dual regulator is recommended for cold water diving.

For safety reasons, it is not advisable to use an Octopus second stage that is not a certified Mares Octopus.

Delivery & Returns


Online purchases on mares.com are enabled for Italy, France, Spain, Germany, Austria, Netherlands, Luxemburg, Belgium and Finland. Some products from the catalogue are only available to purchase at an authorised Mares Dealer.

Products shipped in Italy are entrusted to Bartolini couriers. Products shipped in other countries are entrusted to DHL couriers.

Delivery times are 3-5 working days.



If you are not satisfied with your order, you can return it quickly and easily.

You can decide to return any products purchased on mares.com within 30 days of delivery. To return items, use the same box they were received in, complete the returns label found here with shipping details and attach it to the box. Remember to insert the delivery number found on page 1 of the delivery documents.


To allow you greater freedom, we have not chosen a courier service with which you need to return the package, you are free to choose your preferred service provider.

Please remember that shipping costs are your responsibility.


You will receive the total refund on the same payment method you used to place your order, within 14 days after your return has reached our warehouse. 


At the moment, we cannot offer exchanges on our products. If you would like a different size, please return the article for a refund and purchase a new size. If you still have any doubts, you can write us an email at shop@mares.com, our Customer Service team will be happy to help.