Free 1-2 Day Shipping | Get up to 10% cashback | Need It Today? Same-Day Delivery Within 50 Miles

Halcyon Standard Twinset System – Aluminum Backplate – Evolve 40 lb Wing – Black

Halcyon  |  SKU: 10.300.000-AL-40
Refer friends - earn more rewards

Regular price $799.00
Shipping calculated at checkout.

In stock — ships from Irvine, CA



Log in / Sign up to claim your rewards

Pickup currently unavailable at 23D

Want to build a custom scuba package?
Request a quote here.

Need Help? Ask our experts.
Call us: 888-701-4017
Chat with us: Start a chat


Description

The Standard Doubles BC System pairs the Halcyon Evolve dual-bladder wing with an adjustable aluminum backplate and a secure harness to support twin-set diving and technical diving scenarios. Lift options include 40 lb and 60 lb for wreck, cave, and decompression diving, and the system includes an inflator with a 22 in LP hose for assembly. Customization and upgrade choices cover the Legend MK2 wing, Cinch quick-adjust harness, weight-pocket options, and full color or branding personalization.

Features

  • Halcyon Evolve wing, dual-bladder design, available in 40 lb or 60 lb lift — ideal for doubles BC system setups
  • Aluminum backplate (standard, long, or small) for durable, lightweight support in twin-set configurations
  • Secure, fully adjustable harness with optional Cinch™ Quick-Adjust for precise trim and fit
  • Included inflator with 22 in low-pressure (LP) hose, ready for assembly and use
  • Compatibility with technical diving accessories: ACB10 weight pockets, trim weights, MC Storage Pak
  • Customization options: Legend MK2 upgrade, color and branding personalization, embroidery
  • Packed dimensions and weight suited for travel and storage, formatted for doubles BC system transport

Specifications

Materials Wing: durable coated fabric with reinforced seams; Backplate: aircraft-grade aluminum; Harness webbing: nylon webbing with stainless hardware
Wing Lift Options 40 lb (18 kg) or 60 lb (27 kg) lift — Evolve dual-bladder configuration
Backplate Sizes Aluminum backplate available in Standard, Long, or Small sizes; optional stainless steel upgrade
Harness Secure, fully adjustable harness with crotch strap; optional Cinch™ Quick-Adjust Harness for tool-free adjustment
Included Inflator with 22 in (52 cm) low-pressure hose; basic assembly hardware and Halcyon Traverse bag included
Compatibility Designed for twin-set/twin-cylinder diving, overhead environments, wreck and cave diving accessories
Optional Accessories ACB10 weight pockets (10 lb / 4 kg), trim weight pockets, backplate padding, MC Storage Pak
Customization Full color and branding personalization available via Halcyon Customize Tool; upgrade options for Legend MK2 wing and stainless backplate
Assembly Final assembly required, user-installable; allows configuration familiarity and tailored fit

Payment & Security

Payment methods

  • Amazon
  • American Express
  • Apple Pay
  • Diners Club
  • Discover
  • Google Pay
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.

WARNING: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm. For more information, visit www.P65Warnings.ca.gov.

Frequently Asked Questions

How should a scuba BCD fit?

A BCD should fit snugly enough that it does not ride up toward your ears when inflated, while still letting you breathe fully. Fasten the waist and cummerbund first, then adjust the shoulder straps so the tank sits close to your back and the shoulders cannot slide off. With the BCD fully inflated at the surface you should still be able to take a deep, comfortable breath; if it squeezes your chest, loosen it or move up a size.

How do I rinse and care for a BCD after diving?

Rinse the outside in fresh water and also flush the inside of the bladder, because salt water gets in through the inflator and dump valves. Fill the bladder roughly a third full of fresh water through the oral inflator, slosh it around, then drain it out through the inflator and each dump valve. Hang it to dry out of direct sunlight and store it partially inflated so the bladder walls do not stick together.

Should I use integrated weights or a weight belt?

Integrated weight pockets carry the lead in the BCD itself, which many divers find more comfortable and easier on the hips, while a weight belt keeps the weight independent of your BCD. Either way, you must be able to release your ditchable weight quickly with one hand, and your buddy should know how your system releases. Non-ditchable trim pockets are useful for balance but should never hold weight you might need to drop.

How do I pack a BCD for travel?

Make sure the BCD is completely dry inside and out before packing so it does not mildew in transit. Remove all weights, deflate it fully, and fold or roll it around softer items such as a wetsuit to cushion the inflator and valves. Avoid hard creases in the air cell, and unpack and air it out as soon as you arrive.

When does a BCD need to be serviced?

Follow the service interval in the manufacturer's manual, which is commonly an annual inspection alongside the rest of your life-support gear. Have the inflator, dump valves, and bladder checked any time the inflator sticks, free-flows, feels rough, or the BCD holds air poorly. Between services, confirm that it inflates and deflates properly as part of every pre-dive check.

What is the difference between a jacket-style and a back-inflate BCD?

A jacket-style BCD holds air in panels that wrap around your sides as well as your back, while a back-inflate BCD keeps the entire air cell behind you. Jacket styles tend to feel very stable and upright at the surface, and back-inflate styles keep the chest clear and are often preferred for horizontal trim underwater. Neither is objectively better, so treat it as a fit and preference decision and try both if you can.

Will my BCD fit any scuba tank?

Most recreational BCDs use an adjustable cam band sized for common single-cylinder diameters, so standard aluminum and steel tanks generally work. Re-check the band tension after the first wetting, because webbing can relax slightly and let the tank shift. If you dive doubles or unusual cylinder diameters, confirm compatibility with the manufacturer before assuming it will hold.