Second Stage Scuba Regulators

Atomic Aquatics Safe Second Inflator (SS1), Stainless Steel

34 reviews

SKU: ATMSS1SYL

^$449.95

+ wishlist

In Stock

DESCRIPTION

A lightweight, streamlined stainless steel inflator with high flow 2nd stage and easy single hand operation.

Pros

Convenient
No leaks
Streamlined setup
Easy breathing at depth
Versatility

Cressi XS Octopus

87 reviews

SKU: CSBOXS

~~$124.95~~ Save: $15.95 (13%)

^$109

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In Stock

DESCRIPTION

A reliable and high-performance Cressi XS Octopus with a lightweight design and dependable valve.

Pros

Great performance and breathability
Good value for the price
Easy to use and adjust
Budget-friendly
Reliable and durable

Cressi XS2/AC2 Piston Regulator

57 reviews

SKU: CSBRXS2

^$219.95

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In Stock

DESCRIPTION

A dependable piston regulator with a marine-grade brass 1st stage and durable hi-tech polymer 2nd stage.

Pros

Lightweight and comfortable
Reliable and dependable
Affordable and good value for money
Easy and effortless breathing
Versatile and works in both cold and warm water

Aqualung Calypso/Titan Octopus

28 reviews

SKU: UDRCTO

^$219

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In Stock

DESCRIPTION

A reliable and easy-to-use octopus with a silicone mouthpiece and polycarbonate housing.

Pros

Great breathability
Reliable and easy to use
Prompt delivery and well-packed
Inexpensive and good value
Works well in cold water

Aqualung Titan Regulator

26 reviews

SKU: UDRTRN

^$475

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In Stock

DESCRIPTION

A lightweight and durable Aqualung Titan Regulator with easy-to-breathe design, optimal hose routing, and adjustable features.

Pros

Affordable price
Comfortable mouthpiece
Good breathability
Low maintenance
Reliable performance

XS Scuba Second Stage Quick Disconnect

16 reviews

SKU: XSSSSQD

^$71.95

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In Stock

DESCRIPTION

A chrome brass quick disconnect for attaching multiple 2nd stages to a single hose.

Scuba Regulator & Octo Grab Bag

15 reviews

SKU: SCBR1O

~~$514.90~~ Save: $134.95 (26%)

^$379.95

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In Stock

DESCRIPTION

A reliable and balanced scuba regulator and octo grab bag for underwater diving.

Sherwood Brut Pro Regulator

13 reviews

SKU: SWDBRP

^$374.95

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In Stock

DESCRIPTION

A reliable Sherwood Brut Pro regulator with optimal inhalation and exhalation, nitrox compatible up to 40%.

Oceanic Alpha 8 SP5 Piston Regulator, Black

13 reviews

SKU: OCNA8SP5BK

^$334.95

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In Stock

DESCRIPTION

A durable black piston regulator with easy breathing, Nitrox compatibility, and exceeding safety standards.

Aqualung Calypso Regulator

12 reviews

SKU: UDRCLR

^$370

+ wishlist

In Stock

DESCRIPTION

A lightweight and reliable Aqualung Calypso Regulator with adjustable 2nd stage and Nitrox compatibility.

Hollis DC7 500SE Regulator with Maxflex Hose

10 reviews

SKU: HLSDC75Y

~~$749.95~~ Save: $400.00 (53%)

^$349.95

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In Stock

DESCRIPTION

A precision regulator set with environmentally sealed, durable materials and adaptable second stage positioning.

Mares Prestige 15X and Prestige Octopus Package

10 reviews

SKU: MRSPKPRGY

~~$619.90~~ Save: $170.90 (28%)

^$449

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In Stock

DESCRIPTION

A lightweight Mares regulator package with diaphragm first-stage, 4 LP ports, and 2 HP ports.

Scubapro MK25 EVO/S620Ti Dive Regulator System

9 reviews

SKU: SCPM25ES620

^$1185

+ wishlist

In Stock

DESCRIPTION

A high-performance regulator set with a balanced piston first stage and adjustable inhalation control.

Atomic Aquatics B2 Regulator Yoke

8 reviews

SKU: ATMB2S

^$969.95

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In Stock

DESCRIPTION

A lightweight, all-titanium regulator with adjustable 2nd stage and patented comfort swivel for easy breathing.

Scuba Regulator Grab Bag

8 reviews

SKU: SCBR1

~~$364~~ Save: $99.05 (27%)

^$264.95

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In Stock

DESCRIPTION

A piston first-stage regulator with a pneumatically balanced 2nd stage design and nitrox compatibility.

Cressi XS Compact Octopus

8 reviews

SKU: CSBOC

^$154.95

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In Stock

DESCRIPTION

A reliable and comfortable Cressi octopus with a low profile design and non-corrosive materials.

Cressi XS Compact Pro MC9 SC Regulator

7 reviews

SKU: CSBRCPS

^$389.95

+ wishlist

In Stock

DESCRIPTION

A lightweight, environmentally sealed regulator with enhanced performance and reduced effort for easy travel.

Dive Rite XT2 Second Stage Only (No Hose)

7 reviews

SKU: DIVRG5200R

^$150

+ wishlist

In Stock

DESCRIPTION

A pneumatically balanced second stage with a carbon fiber cover and ABS plastic case.

Atomic Aquatics B2 Sealed Regulator Yoke

7 reviews

SKU: ATMB2SS

^$1019.95

+ wishlist

In Stock

DESCRIPTION

A lightweight, ergonomic regulator with a titanium second stage and patented comfort swivel.

Scubapro MK25 EVO/A700 Dive Regulator System

6 reviews

SKU: SCPM25EA70

^$1254

+ wishlist

In Stock

DESCRIPTION

A high-performance regulator set with customizable breathing options and enhanced cold-water diving capabilities.

Aqualung Airsource Complete

6 reviews

SKU: UDRAS3QD

^$239

+ wishlist

In Stock

DESCRIPTION

A pneumatically balanced octopus and BCD inflator combo with soft-touch purge cover and rapid-exhaust valve.

Atomic Aquatics M1 Regulator Yoke Sealed

6 reviews

SKU: ATMM1BK

^$1019.95

+ wishlist

In Stock

DESCRIPTION

A high-performance regulator designed for extreme diving situations, with nitrox-ready capabilities and freeze protection.

Atomic Aquatics ST1 Swivel Sealed Regulator

6 reviews

SKU: ATMST1SS

^$1519.95

+ wishlist

In Stock

DESCRIPTION

A corrosion-resistant stainless steel regulator with smooth breathing and tangle-free movement.

Scubapro S600 Regulator, Second Stage Only

5 reviews

SKU: SCPS600N

^$602

+ wishlist

In Stock

DESCRIPTION

A durable Scubapro S600 second stage regulator with adjustable inhalation effort and comfortable mouthpiece.

Scubapro A700 Regulator, Second Stage Only

5 reviews

SKU: SCPA700

^$769

+ wishlist

In Stock

DESCRIPTION

A durable, high-performance second stage regulator with adjustable features for optimal breathing sensitivity.

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Second Stage Scuba Regulators

When exploring the world beneath the waves, the right regulator second stage can make all the difference in your diving experience. This essential component of your scuba setup is what delivers each breath of air, translating the pressurized supply from your tank into smooth, effortless inhalation. Whether you’re a seasoned diver clocking up hours in warm Caribbean waters or a new enthusiast preparing for your first open water certification, choosing the right second stage is a personal decision shaped by comfort, performance, and reliability. During the late summer months, as dive conditions become optimal in many popular destinations, divers are often motivated to upgrade or fine-tune their gear for upcoming trips. The regulator second stage is a thoughtful gift for diving partners, family members, or friends embarking on certification courses, and it’s also a practical investment for anyone seeking greater control and confidence underwater.

When considering a new regulator second stage, it’s important to think about the environments where you’ll be diving. Warm, clear waters may call for a lightweight, compact design that reduces jaw fatigue during long drift dives, while colder or more challenging conditions demand a robust, environmentally sealed model to prevent free-flow and freezing. Divers who travel frequently might prioritize a second stage that is easy to pack and maintain, with intuitive controls for quick adjustments at depth. Many experienced divers recall the first time they descended into a kelp forest or explored a shipwreck, feeling the reassuring, consistent airflow from a well-chosen second stage. This peace of mind allows you to focus on the vibrant marine life and the gentle sway of the current, rather than equipment concerns. For instructors, rescue divers, or those exploring technical diving, advanced features such as adjustable breathing resistance and venturi switches can be invaluable, offering fine-tuned performance tailored to variable dive profiles and depths.

A quality regulator second stage is more than just a piece of equipment—it’s a gateway to adventure, safety, and unforgettable moments underwater. As you browse the selection, consider how your choice will integrate with the rest of your setup, including your first stage and high-pressure hoses. If you’re interested in learning more about the full system, including how to pair your second stage with compatible first stages, take a look at our High Pressure Scuba Regulators page for additional insights. With each dive, your regulator becomes a trusted companion, supporting you through coral gardens, over sandy bottoms, and into the blue. As late summer brings warm currents and clear visibility, now is an ideal time to ensure your gear is ready for every underwater journey, whether you’re planning a local shore dive or a distant liveaboard adventure.

Top Picks For Second Stage Scuba Regulators