Hollis SMS Katana 2 BCD

Hollis Katana 2 Sidemount Harness – Your Dive. With a Side of Air.

The Katana 2 harness redefines sidemount diving with cutting-edge innovation and unmatched versatility. Designed in collaboration with renowned cave diver Edd Sorenson, this one-size-fits-all system is built for divers who demand maximum performance and full control over their configuration.

Whether you’re exploring caves, conducting technical dives, or sidemounting a CCR unit, the Katana 2 offers complete adaptability with its unique Quick Fit System (QFS), multiple lift and weight capacities, and support for single or dual bladder configurations.

Key Features:

• Quick Fit System (QFS): A true one-size-fits-all design that allows rapid, precise adjustment to your body and preferences in minutes.

• Modular Harness Layout: Offers both “H” or “Y” style harness configurations to suit your diving style.

• High Lift Capacity: 40lb of lift and 20lb weight capacity for secure buoyancy and trim, even with full sidemount loads.

• Single or Dual Bladder Options:

  • Single bladder: Ideal for recreational sidemount or drysuit redundancy

  • Dual bladder: Perfect for technical divers using wetsuits

• Top Dump Valve: Innovative top-mounted dump valve allows efficient gas venting while maintaining trim no reaching behind the wing.

• CCR Compatibility: First sidemount harness with integrated CCR mounts for the KISS Sidewinder.

• Streamlined & Accessible: Easy-to-reach attachment points on the wing for clipping accessories or stage cylinders.

• Durability & Quality: Constructed from rugged materials Hollis SMS Katana 2 is ready for the harshest environments.

• SMS Regulator Kit (optional): Add-on package includes everything needed, DCX 1st stages, 200LX 2nd stages, LP/HP hoses, SPGs, and regulator necklace for a complete sidemount setup.

“Depending on location, everyone’s a little bit different about how they like to set their harness up. But at the end of the day, the coolest thing about the Katana 2 is that you can run it however you want. Technical divers love to modify and tweak … depending how they’ve been diving in the past, or how they were taught or how they teach their students … The key benefit of the Katana 2 is that those people can make all of the adjustments and decisions for themselves.”
— Nick Hollis, Brand Manager

From caves to deep wrecks, from open circuit to CCR, the Katana 2 is the next evolution in sidemount diving, customizable, compact, and fully capable.