Best Sidemount Accessories List for Cleaner Dives
A sidemount system can look wonderfully simple until you start preparing for real dives. Cylinders, regulators and a harness are only the foundation. The best sidemount accessories list is not about hanging every possible item from the rig. It is about selecting the small components that keep cylinders secure, streamline your profile, solve predictable problems and still leave your equipment easy to reach with gloves on.
For recreational sidemount diving, a few carefully chosen accessories may be enough. For extended range, overhead or cold-water diving, redundancy, attachment security and equipment placement deserve a more deliberate plan. The right choice depends on your cylinder valves, exposure suit, environment and the way you manage gas during a dive.
Best sidemount accessories list: start with cylinder connection
Cylinder attachment hardware affects trim, comfort and how easily you can manage a stage of the dive. It is one of the areas where a personalised setup makes the biggest difference.
Bolt snaps and bolt-snap covers
A quality bolt snap on each cylinder gives you a reliable lower attachment point. Choose a size that you can operate confidently with the gloves you actually use, rather than the smallest possible clip. A tiny snap may look tidy, but it becomes frustrating when a thick glove, a little sand or low visibility is involved.
Bolt-snap covers are useful where metal hardware could rub against cylinder paint or where you want to reduce unwanted contact with the harness. They are not essential for every diver, and they add a little bulk, but they can help protect aluminium cylinders used frequently in warm-water travel.
Stainless-steel D-rings and sliding D-rings
Fixed and sliding D-rings let you position cylinder clips to suit your torso length and cylinder type. A sliding ring can make minor in-water adjustments easier, particularly when changing between aluminium and steel cylinders. Fixed D-rings are simpler and can feel more consistent once your setup is fully dialled in.
Do not assume the same ring position will work for every dive. Aluminium cylinders become increasingly buoyant as they empty, while steel cylinders often sit differently from the start. Your harness should give you enough adjustment to accommodate this without turning every dive into a re-rigging exercise.
Bungee, bolts and retainers
Sidemount bungee holds the cylinder valve close to your body and is central to a clean profile. It must be strong enough to retain the valve securely but not so tight that clipping in becomes a struggle. Divers commonly prefer loop bungees, independent bungees or a routed system according to their harness design and access preferences.
Carry suitable bungee retainers or hardware designed for your system, rather than relying on improvised knots alone. Knots can work, but they may be difficult to inspect, adjust or release. A tidy, repeatable bungee arrangement makes it easier to identify wear before it becomes a failure point.
Accessories for trim, comfort and protection
A sidemount rig should support neutral trim without forcing you into an uncomfortable posture. Small accessories can make a marked difference here, especially when moving between tropical water and thicker thermal protection.
Trim-weight pockets and non-dumpable weight
Trim pockets allow weight to sit where it improves your balance rather than simply where there is a spare webbing slot. Depending on the rig and exposure suit, divers may place small amounts of weight along the waist, upper tank bands or rear harness area. The aim is a stable, horizontal position, not a fixed formula copied from another diver.
Non-dumpable weight is often appropriate for technical configurations where an accidental release would create an immediate buoyancy problem. For recreational diving, consider your training agency guidance, local conditions and emergency procedures before deciding how much weight should be fixed in place.
Tank bands, cam bands and protective sleeves
Cylinder bands provide a mounting point for lower bolt snaps and can reduce movement against the cylinder. Rubber-lined or grippy options can be particularly useful on smooth-painted cylinders. Protective sleeves or simple abrasion guards are worthwhile if you regularly use hired cylinders, carry equipment through rocky entries or want to preserve your own cylinders’ finish.
Avoid adding thick padding everywhere by default. Excess material can trap sand, retain water and make it harder to see whether straps and bands are correctly positioned. Protection is most useful where contact is genuinely likely.
Harness pads and webbing keepers
Shoulder pads can improve comfort on long surface walks or when diving in a thin suit, but they should not conceal adjustment points or create a bulky fit. Many divers find a properly fitted harness more valuable than additional padding.
Webbing keepers, meanwhile, are modest but valuable. They prevent loose harness tails from floating free, snagging or interfering with clips. Select keepers that hold securely without making field adjustments unnecessarily difficult.
Tools and safety items worth carrying
The most useful safety accessories are compact, accessible and chosen for a realistic problem. They should be placed consistently, so either hand can find them without searching.
- Two cutting devices: A primary cutter on the harness and a compact backup stored separately provide redundancy for line entanglement. A line cutter is low profile, while shears can be more versatile for thicker material.
- A compact backup mask: Sidemount divers often have several hoses and attachment points close to the torso. A low-volume spare mask in a secure pocket is sensible contingency equipment, particularly on deeper or overhead dives.
- An audible surface signalling device: A whistle remains practical because it works without batteries and takes little space. It is most useful when surface cover, boats or current are part of the dive plan.
- An inflatable delayed surface marker buoy and reel or spool: For open-water ascents, this combination provides a controlled way to signal your position. Choose spool size and line length for the depths and current you expect, not simply the smallest option available.
Stowage that keeps the rig usable
Good sidemount stowage is about access and discipline. You need enough capacity for items such as a mask, buoy, spool, slate or torch, but not a large pocket that becomes a catch-all for items you cannot locate underwater.
Thigh pockets are popular because they remain accessible in a stable horizontal position and keep equipment off the chest. A waist-mounted pocket can work well for lighter items, provided it does not obstruct cylinder clips or the wing dump. Some divers prefer an integrated butt pouch for spools and markers, especially where the harness is already configured around a rear attachment point.
Before committing to a pouch, test it while wearing your full exposure protection and cylinders. Check whether you can reach its opening with either hand, retrieve an item without looking and close it without trapping a hose. A pocket that works in a shop can behave very differently once the wing is inflated and tanks are clipped in.
Lighting, navigation and backup items
A primary torch is a practical sidemount accessory for night diving, wrecks, low visibility and inspecting equipment. Select a mounting method that lets the light sit close to the body when not in use. Hand-mounted lights are convenient for many divers, while a canister light and Goodman handle may suit longer technical dives.
A compact backup torch belongs in a pocket or on a secure, streamlined attachment point. It should be independent of the primary light and checked before every dive. For overhead diving, lighting redundancy is a core requirement rather than an optional upgrade.
A compass remains useful even when a dive computer provides sophisticated navigation features. Mount it where it can be read in trim without disrupting your hose routing. If you carry a slate or wetnotes, keep it in the same place on every dive for recording gas plans, bearings and team information.
Spares that prevent a cancelled dive
The best accessory is sometimes the one that remains in your save-a-dive kit until someone needs it. Sidemount systems contain consumable components that can wear, corrode or disappear during travel. A modest spares kit should include the parts most likely to stop your particular configuration from functioning.
Useful items include spare bolt snaps, double-enders, bungee or shock cord, O-rings, fin straps, mask strap, webbing keepers and cable ties. Add the tools required to fit them, such as a small adjustable spanner, hex keys appropriate to your hardware and a line cutter. Keep saltwater-exposed metal items dry after diving and inspect clips for sticking springs or sharp edges.
There is a trade-off here. Carrying every conceivable spare adds weight and confusion, particularly when travelling. Build the kit around the gear you own, the remoteness of the destination and whether you can obtain support locally.
Build the list around your actual diving
The most effective sidemount configuration is rarely copied straight from a photograph. A warm-water diver using aluminium cylinders may prioritise trim pockets, tank bands and light stowage. A diver preparing for cave training may focus more on dependable bungee routing, redundant cutting tools, lighting and disciplined pocket organisation. Someone moving from a single-cylinder recreational setup may benefit most from getting the harness fit and cylinder attachment points correct before adding specialist extras.
At Deep Dive Supplies, a custom approach means looking at the complete system: your body shape, cylinders, regulators, suit thickness and intended dives. Start with accessories that solve a known need, then test the setup in controlled water and change one element at a time. A clean rig is not the one with the fewest accessories. It is the one where every item has a purpose, a home and a reason to be there.