Achieve maximum cold-water performance without the typical burden of heavy dive instrumentation. The Apeks XL4 Plus (XL4+) is an ultra-lightweight, high-performance regulator system meticulously engineered for serious recreational sport divers and technical exploration teams looking for substantial weight savings.

Optimized to significantly reduce jaw fatigue during long-duration profiles, the XL4 Plus serves as a brilliant primary breathing system or an ideal stage bottle/deco regulator. Built with an upgraded first stage that adds a second high-pressure port, this compact powerhouse handles dual-monitoring configurations with total ease. We manage secure transaction processing and provide fast, reliable shipping on all elite life-support gear right to your door, anywhere in Canada!

First Stage: Over-Balanced Protection & Twin HP Ports

Modelled on the world-renowned, expedition-tested Apeks DS4 platform, this compact machined first stage is heavily modified to excel in near-freezing waters:

• Innovative Over-Moulded Endcap: Features a breakthrough rubberized external barrier paired with an advanced environmental dry diaphragm. This setup effectively locks out water to prevent ice crystallization, eliminating the risk of sub-surface free-flows while protecting structural brass components from impact damage.
• Unique Over-Balanced Diaphragm: As you descend, the intermediate hose pressure automatically scales up at a faster rate than the surrounding ambient pressure. This unique mechanical feature ensures rapid, effortless air delivery at extreme depths.
• High-Surface Heat Exchanger: Utilizes an oversized internal diaphragm clamp that accelerates thermal transfer from the surrounding water, warming the expanding gas inside the body to maximize cold-water structural safety.
• Expanded Port Configuration: Equipped with 2 High-Pressure (HP) ports and 4 Medium-Pressure (MP) ports, providing perfect layout alignment for simultaneous use of digital wireless transmitters and traditional backup analogue SPGs.

Second Stage: Compact Pneumatic Balance & Tactile Controls

• Pneumatically Balanced Poppet Valve: A highly responsive lever-operated poppet mechanism counters gas pressures smoothly, yielding pristine, natural breathing resistance throughout your entire pressure cylinder cycle.
• Over-Moulded Purge Button: Designed with an oversized, controllable self-flushing front purge panel that stays completely clear of sand or salt accumulation, remaining incredibly easy to operate while wearing thick drysuit gloves.
• Comfobite Mouthpiece Integration: Comes standard with a genuine Apeks Comfobite mouthpiece featuring a unique roof-of-the-mouth bridge support. This completely eliminates jaw fatigue, meaning you don't have to bite down tightly to keep the unit perfectly stable in your mouth.

Master Service Bench Validation & Free Shipping Across Canada

Buying your life-support breathing apparatus from International Diving Centre ensures total field readiness. Our on-site service technician has been diving for over 35 years and rebuilding Apeks life-support components full-time for 30 years in our Vancouver facility. Every single regulator is meticulously checked, finely tuned, and magnehelic-tested on our bench prior to shipping. Take advantage of our national store benefit: enjoy FREE Shipping anywhere in Canada on all gear orders of $200.00 or greater!