contact us

Use the form on the right to contact us.

4940 Rusina Rd
Colorado Springs, CO, 80907
United States


Underwater Connection, has been serving the Colorado Springs water sports community since 1989. What started as a scuba shop 25 years ago, has now grown into a legacy of aquatic adventures. Now offering everything you need for Whitewater Kayak, SUP, Swimming, Triathlon Aquatics, and of course, Scuba.

Join the movement, live your life.

Hollis - SMS Package


Shop Underwater Connections Online Store for the best BCD selection. Aqua Lung, Scuba Pro, Zeagle, and Hollis. Free Ground Shipping.

Hollis - SMS Package

sidemount regs.jpg
sidemount regs.jpg

Hollis - SMS Package


The SMS 75 is an evolution from years of sidemount development, which started with the SMS 100. A product that has been copied, modified and a benchmark for technical sidemount for years. Even more popular has been the lightweight SMS 50 line. These two have taken sidemount mainstream and the building blocks this new harness. While it will cater more to hardcore cave divers, SMS 75 was created to handle all environments. Proper trim is key and the wing is designed to promote horizontal diving with increased lift towards the hips where it’s needed most, and without modification. The SMS 75 will also support rear mounted tanks and reversible inflator positions.

  • Trapezoid shape to promote horizontal trim
  • Adjustable and removable wing bungee
  • Designed for cave or open water sidemount
  • Cam slots for single tank and grommets at 11” for banded doubles
  • Reversible Inflator & Dump assembly
  • Rigging kit included: Tank bungees, SS Cam bands, SS Bolt snaps & nylon line
  • Includes sternum strap & crotch strap
  • Inner located elbow to avoid overhead interference

Package includes:

  • SMS 75
  • 2 x DCX 1st Stage DIN
  • 2 x 200LX 2nd Stage
  • 1 LP 36" hose
  • 1 LP 84" hose
  • 2 x Metal Pressure Gauge (no boot)
  • 2 x HP 6" hose
  • 1 Regulator Necklace


Product available but not regularly carried in stock. Please allow extra time for shipping.

Add To Cart

Hollis SMS Package:

  • Complete Side-Mount System
  • Regulators, Harness and Buoyancy Control
  • Owner Manuals

    Hollis 200LX DCX Regulators:
  • Meets Rigorous CE Standard for Coldwater Performance
  • Available with Multiple Length 3/8" Threaded Hoses
  • CD Owner's Manual

    First Stages: Hollis DCX
  • Hollis Newest Flagship First Stage
  • DCX, Design by Divers for Divers
  • Every Feature Designed w/High Performance, Superior Manufacturing at Every Step
  • Physical Vapor Deposition (PVD) Finish
  • PVD: Most Durable Coating Available Today
  • Redesigned to Reduce Weight
  • Improving Angle of LP and HP Ports, Maximize Hoses Routing
  • Five 3/8" Threaded Low Pressure Port Design
  • 5th LP Port: 1'st Choice for Back-Mounted Doubles, Side Mount or Demanding Recreational Divers
  • Two 7/16" Threaded High Pressure Ports
  • Over-Balanced Diaphragm Regulator Design
  • Provides Progressively Greater Intermediate Pressure with Increased Depth and Gas Density
  • Superior Gas Delivery Under-Most-Extreme-Conditions
  • Dual Diaphragm Design: Completely Seals Internal Components from Environment
  • Environmental Sealing Prevents Icing
  • Material: Forged Marine-Grade PVD Finished Brass
  • Nitrox Compatible to 40% Out-of-the-Box

    Second Stage Regulators: Hollis 200LX
  • Pneumatically Balanced Demand Valve Design
  • Physical Vapor Deposition (PVD) Finish Brass Valve
  • Stainless Steel PVD Coated Cover Ring, Adjustment Knob & Pre-Dive/Diver End Cap
  • Smooth, Easy Breathing
  • Adjustable Inhalation Knob, Allows Diver to Customize Inhalation Effort
  • Adjustable Venturi System (A.V.S.)
  • AVS: Simple Dive/Pre-Dive Switch Adjust Inhalation Effort
  • AVS: Prevents Free-Flow During-Shore-Entries or Long-Surface-Swims
  • Lightweight ABS/Polycarbonate Housing
  • Patented Silicone Rubber Orthodontic Mouthpiece
  • Mouthpiece Provides Comfort and Reduced Jaw Fatigue

    Pressure Gauges: Hollis SPG's
  • Luminescent Faceplate
  • Standard with Air Spool & Viton O-rings
  • Oxygen Clean for 100% O2
  • Available in 0-5,000 PSI or 0-360 BAR
  • Chrome-Plated Brass Housing
  • Scratch Resistant Tempered Glass Lens
  • Accurate Bourdon Tube Mechanism
  • Red Color Coded Readout of 0 to 700 psi or 0 to 50 bars for Safety Reserve Air
  • Dimensions: Compact 2" (50.8 mm)
  • Available w/Multiple Length 7/16" Threaded HP Hoses

    Hollis Side-Mount SMS 75 Complete:
  • Designed for Side-Mount Cave Divers, Beginner, Advanced or Technical Divers
  • Suitable for: Side Mounting Twin or Single Cylinders or Rear Mounted Singles
  • System Uses: Any-Environment from Open-Water to the Overhead Environment
  • System is Ready-to-Dive Out-of-the-Box
  • Bulletproof Constructed System Allows Full Visibility Over-your-Gear
  • Perform Gas Checks/Management, Configure-and-Monitors All Gauges, Valves and Hoses w/o Assistance
  • Streamlines Profile: Reduces Drag, Increasing Bottom Time
  • Harness: 5-Stainless Steel D-Rings on Padded Shoulder Straps, 4-Pre-Bent for Accessory Attachment
  • Adjustable Shoulder and Sternum Straps
  • Shoulder and Sternum Straps: Squeeze-Style" Side-Release Buckles for Easy Donning and Doffing
  • Stainless Steel Latch-Style" Waist Buckle with Adjustable Crotch Strap
  • Crotch Strap: Additional Stainless Steel D-Rings for Attachment of Accessory or Scooter
  • All Hardware Manufactured from 316- Marine-Grade" Stainless Steel
  • 360° Degree Elastic Bungee System (removable) Wing
  • 35lbs (15.88kg) of Lift Capacity
  • Centrally-Located Inflator Mechanism Elbow: Avoid Tank Valve/Regulator Interference
  • Lower Left Pull Dump/Overpressure Relief Valve

    Hollis Inflator System: 
  • Durable Impact Resistant Plastic Housing
    Corrugated Rubber Hose
    Internal Components & Inlet Quick-Disconnect Nipple made from Chrome Plated Brass
    Low Pressure 3/8" Threaded Quick-Disconnect Hose
  • Cam Slots for Single Tank and Grommets at 11" (27.9 cm) for Banded Doubles
  • Reversible Inflator Positions