Mares has incorporated advanced modern regulator technology into the 28XR-HR diving regulator. The first stage features an innovative balanced diaphragm system operated by a dual piston, ensuring high performance and reliability. AST – Auto Sealing Technology guarantees a perfect seal against the entry of sand or other particles, making it especially suitable for cave diving or polluted water environments.
The rotating swivel turret, with one vertical low-pressure port and four additional low-pressure ports, allows use in all configurations. Its flexibility makes it ideal for double tanks, as well as stage and sidemount setups.
The Mares 28XR-HR Sidemount Regulator Set contains all the hardware and accessories required for a complete sidemount breathing system, ready to dive. Designed for technical diving and demanding environments, this set delivers high performance, extreme reliability and maximum configuration flexibility.
This set includes
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2 × HR second stages
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2 × 28XR first stages
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2 × soft rubber LP hoses (60 cm and 210 cm)
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2 × short sidemount inflator hoses (20 cm)
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1 meter of 4 mm bungee
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2 × pressure gauges
Second Stages
Suitable for stage, sidemount, primary backmount, backup backmount or hard-breathing backmount use.
Designed for extreme cold-water diving, they feature an adjustable breathing comfort system allowing divers to control inhalation effort.
The VAD system with curved bypass ensures high, natural gas flow. The ultralight technopolymer case offers simplicity and high performance. Additional features include PAD – Pneumatically Assisted Design, an oversized purge button, and soft rubber LP hoses.
First Stages
The first stages feature a shiny chrome metal body with natural DFC on all LP ports, ensuring consistent high airflow. They are equipped with a TBP Dry Kit, environmentally sealed for improved cold-water performance, and AST – Auto Sealing Technology to prevent water ingress.
They include 4 LP ports on a swivel turret, a 5th additional in-line LP port, and 2 symmetrical HP ports with a 10° angle for perfect hose routing. G5/8 DIN connection, 300 bar.
- Connection Type
- DIN
- 1st Stage Type
- Piston
- 2nd Stage Compensated
- Balanced
- 1st Stage Protection
- AST
- Color
- Black
Chrome - Coldwater
- ✅
- Venturi
- ✅
- Breathing Effort
- Low
- Number of HP Ports
- 2
- Number of LP Ports
- 5
- 1st Stage Compensated
- Balanced
- VAD
- ❌
- Airmatic
- ❌
- Hose Type
- Rubber
- Hose Color
- Black
- Environmental Sealed
- ✅
