The Mares Heavy Duty Complete Mounted System is a jacket-style BCD from Mares – the most popular format for recreational divers in Malaysia. It wraps around you comfortably, distributes lift evenly, and gives you stable, neutral buoyancy on every dive from Mabul’s world-class visibility to the shallows.
Technical Specifications
| Specification | Details |
| Brand | Mares |
| Product | Heavy Duty Complete Mounted System |
| Type | Jacket BCD |
| Material | Cordura / Nylon |
| Lift Capacity | ~20 kg |
| Pockets | Multiple D-rings & cargo pockets |
| Weight Pocket | Integrated release |
| Best For | Recreational / Technical diving |
Key Features
- Jacket-style design: Wraps around you for a stable, comfortable fit – the most natural feel underwater.
- Integrated weight pockets: Quick-release weight system for safety and convenience.
- Multiple D-rings: Attach all your gear securely without clutter.
- Durable Cordura construction: Built to handle years of salt-water diving.
Suited for Malaysian Dive Sites
The Mares Heavy Duty Complete Mounted System is built to perform across Malaysia’s best underwater destinations. Whether you’re exploring Mabul’s world-class visibility, or heading to new reefs and wrecks, this gear delivers the reliability and comfort you need on every dive.
Care & Maintenance
- Rinse thoroughly after every dive – salt and sand clog the inflation bladder.
- Inflate the bladder and let it dry fully before storing – prevents mildew.
- Lubricate the dump valve with silicone spray every few dives.
- Have it serviced professionally once a year.
Final Verdict
The jacket BCD is the workhorse of recreational diving, and the Mares Heavy Duty Complete Mounted System is a solid, reliable example. Comfortable buoyancy, good organisation, and a fit that works for most divers.




Clement Tan –
What are the weight capacities of the different components of this system?
Imran Hanafiah –
Thank you for reaching out to us, Clement. The Mares Heavy Duty Complete Mounted System is designed for heavy-duty use, and each component has a specific weight capacity. The 3mm stainless steel backplate has a capacity of 550 lbs (250 kg) while the marine-grade stainless steel D-rings have a capacity of 1100 lbs (500 kg). Please note that these capacities are based on the manufacturer’s specifications and may vary depending on the specific use case. We recommend consulting the user manual for more detailed information.
Rachel Tan –
Can I get a more detailed guide on how to use the D-rings and the crotch strap?
Imran Hanafiah –
Hello Rachel, thank you for your review and question about our Mares Heavy Duty Complete Mounted System. We’d be happy to provide more information on how to use the D-rings and the crotch strap. To ensure a secure and safe diving experience, we recommend the following: 1. Position the crotch strap comfortably but securely under your crotch. 2. Attach the D-rings to your BCD or tank according to the manufacturer’s instructions. 3. Ensure the D-rings are properly secured and adjusted to fit your body. For more detailed guidelines, please refer to our user manual or contact our customer support team directly. We appreciate your feedback and are here to help!
Daniel Wong –
The Mares Heavy Duty Complete Mounted System is an excellent choice for anyone looking for a high-quality, durable diving harness. I’ve used it for multiple dives and it’s performed flawlessly. I’d definitely recommend it to anyone.
Kaitlyn Tan –
I’ve had this product for a few months now, and I’m thoroughly impressed with its build quality and durability. The harness straps are incredibly sturdy, and the D-rings are made of high-quality stainless steel. I’ve put this system to the test in challenging underwater conditions and it has performed flawlessly.
Leila Lim –
I absolutely love my Mares Heavy Duty Complete Mounted System. The stainless steel backplate is incredibly sturdy and the D-rings are marine-grade, making it perfect for diving in the ocean. I’ve used it for multiple dives now and it’s performed flawlessly. The price is a bit steep, but I think it’s worth it for the quality and durability.
Leia Goh –
Is this product suitable for long-term underwater use in tropical waters?
Junhao Lo –
Thank you for taking the time to review the Mares Heavy Duty Complete Mounted System. We’re happy to provide more information about its suitability for long-term underwater use in tropical waters. The system’s marine-grade stainless steel components are designed to withstand harsh marine environments, including corrosion from saltwater and sunlight. While we haven’t explicitly tested the system for long-term use in tropical waters, the materials used are generally more resistant to degradation in such conditions compared to other options. However, we still recommend regular maintenance and storage in ideal conditions when not in use to ensure optimal performance.
Shane Low –
I’ve used this product for about 6 months and I still like it a lot. The build quality is very good, and I like the way it looks. One minor issue is that sometimes the D-rings can be a bit tricky to undo under stress, but that’s about it.
Melvin Tan –
I purchased the Mares Heavy Duty Complete Mounted System for its durability and sturdiness, but the weight of the stainless steel backplate makes it uncomfortable to wear for extended periods.
Sarah Lee –
What is the weight capacity of the Mares Heavy Duty Complete Mounted System and is it suitable for large divers?
Imran Hanafiah –
Dear Sarah, thank you for your question about the Mares Heavy Duty Complete Mounted System. The weight capacity of this system is 300 pounds (136 kg), making it suitable for larger divers. The sturdy design and durable materials of the harness straps, including the 3mm stainless steel backplate, ensure a secure and reliable fit. However, please note that individual weight limits may vary depending on body type and distribution. We recommend consulting our size chart and contacting our customer support for further guidance on sizing and weight capacity suitability. Your safety is our top priority.
Diana Wong –
I’ve been using this product for quite some time now, and I would say it’s pretty reliable. I like how easy it is to set up and the materials used seem to be of good quality.
Rachel Ong –
Can the Mares Heavy Duty Complete Mounted System be used with other brands of diving equipment, or is it proprietary?
Imran Hanafiah –
Thank you for reaching out to us, Rachel. The Mares Heavy Duty Complete Mounted System is designed to be compatible with various diving equipment brands. Although it is primarily designed to be paired with Mares gear, its marine-grade stainless steel components and robust build make it a versatile choice for divers who use equipment from other brands. Feel free to share more details about your dive gear setup, and we can provide more tailored advice. Your opinion matters to us, and we value any feedback you’d like to share.
Evelyn Chew –
How does the Mares Heavy Duty Complete Mounted System compare to other diving harness systems in terms of comfort and support?
Junhao Lo –
Thank you for taking the time to share your question about the comfort and support of our Mares Heavy Duty Complete Mounted System. We understand that choosing the right diving harness system can be crucial for your comfort and peace of mind during your dives. Our system features durable harness straps, including a crotch strap, made from sturdy materials that distribute the weight of your gear comfortably. Additionally, the marine grade stainless steel D-rings and 3mm stainless steel backplate ensure a secure attachment of your gear. In comparison to other diving harness systems, our system is designed to provide excellent support and comfort while diving. However, we recognize that comfort is subjective and may vary from person to person. If you have any specific concerns or would like to share more about your experience with other diving harness systems, please let us know. We’re always here to listen and help. Would you like to share your thoughts on this or do you have any follow-up questions?