Delivery to UK Mainland from £2.50
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14 Day Refunds & Return Policy

42LB Side Mount


Northern Divers Side-Mount is a Technical Dive BCD Harness that is the first of its kind in our range. Are you tired of traditional backmounted diving and looking to try something new? Try sidemount diving. A sidemount setup is streamlined rather than a backmounted setup, and it& helps you reach dive sites like caves and wrecks more efficiently. Scuba diving using a sidemount setup simply means carrying your tanks at your sides rather than on your back. For many divers, this reduces drag and mak...

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Delivery, Returns & Instore Collection

When will I receive my order?

International Delivery Times

Monday – Friday 3 – 5 Working Days

UK Mainland Delivery Times

Monday – Friday before 2pm Next Working Day
Monday – Friday after 2pm 2 Working Days
Saturday & Sunday 2 Working Days

UK Extended Areas Delivery Times

Monday – Sunday 3 – 5 Working Days

Please note delivery times may be extended during busy periods.

EU Areas

Please note that due to changes by HMRC, orders being shipped to EU countries will not be shipped on the same day as they are invoiced. EU Orders will now be shipped on the next working day. This only applies to E.U. orders. Domestic and Worldwide shipments remain the same.

Collect In Store?

When you go to the online checkout, you can opt to collect your items in store. We'll let you know when your order is ready for you to collect. Your order will normally be ready to collect the next working day.

Returns, refunds or exchanges?

You can return any item within 28 days of receipt for a refund, provided the item is unused, in its original packaging and in 'as new' condition.

Items will be refunded in full (less postage) if received within 28 days from the date of despatch.


We aim to deal with all returns and exchanges on the day they arrive, however please allow longer during peak periods.

You can return the item(s) by dropping them off in store or by returning the item(s) by post. We do not insist on a specific courier service for the return, so please use the most economical or appropriate method for returning the item(s).

Northern Diver (Int) Ltd
Appley Lane North
Appley Bridge

If an item becomes faulty after a period of time then please contact customer services (01257 254 444 or prior to returning the item. We will either repair or replace the item at our discretion.

Tell Us What You Think

Customer Reviews

5 out of 5 Stars (3 reviews)

Write a Review

Scuba Magazine Test Center

By Charles Hood on 20 Jan. 2017

There are many myths and misconceptions about diving with cylinders on your side rather than on your back. I'm not talking about using side-slung deco cylinders with a normal back-mounted cylinder set up but the real side-mounted cylinders. The first myth is there is one correct way to do it. In fact there are numerous different setups with almost every diver honing their preferred configuration after quite a bit of tweaking. The essential concept is that the diver carries their cylinders either side by attaching them at two points, the lower connection is around the hip and the top fastening is towards the upper chest area. To achieve this arrangement you require some kind of harness and for buoyancy a wing-style BC that will keep you horizontal underwater. A conventional BC would struggle to achieve this and until a few years ago the majority of side-mounted systems were home made, using various components from several different manufacturers and even home made gizmos as well. But now several companies have introduced specific systems. Northern Diver is one such and I've had its iteration here at the Test Centre for the past couple of months, to get to grips with it. It consists of a harness with heaps of strategically placed D-rings, a back-mounted bladder giving just under 20kg of lift, an underarm inflator hose and mechanism, kidney pull dump valve, trim weight pouches, a detachable bag and a whole heap of snap bolts, bungee cord and webbing with cambands. Provision of a variety of fixings means that you can customise the exact method of attaching your cylinders - even specifically designed systems have options - and there is a comprehensive set of instructions. It's a one-size-fits-all harness and there is a huge amount of webbing; if I owned one I would certainly cut off about 40cm. One of the advantages of side-mount diving is you can clip your cylinders on at the water's edge and I found this easy to do, even when wearing thick gloves, thanks to the large, pre-bent D-rings. The bag could accommodate my dSMB and reel attached to D-rings at the rear. This made it bounce around on my bottom and although out of the way I found it was a little distracting. Once underwater the side-mount system worked well. It kept me delightfully horizontal with both cylinders snugly positioned either side of me. The harness also felt close fitting, helped by the crotch strap. The power inflator is responsive and is held nicely to hand without flapping about. The kidney dump is on the left-hand side and underneath, so I did find that I had to roll around a little to get the air out. I preferred using the hose dump, although it required me to go head up for a little while. Amazingly you get all this for £350, which is pretty much the same as a standard BC and certainly very competitively priced when compared with other similar systems on the market. Northern Diver throws in a carry bag as well.

Delivery was very quick...

By Keith Bramley (via Trustpilot) on 17 Jan. 2022

Delivery was very quick, haven't dived the sidemount wing yet, but the build quality feels exceptional. The changing robe is extremely warm and again excellent quality. Both highly recommend.

Sidemount harness.

By Russell Povey (via Truspilot) on 22 Jan. 2022 on 22 Feb. 2022

Bought, shipped and arrived really quickly, item perfectly as expected. Easy to do business with.

Trade Customers

Northern Diver offers trade accounts. Please click here to register your details and find out if you qualify. Once your trade account has been confirmed you can view all trade prices and shop easily online when logged into your account. Please note when you are not logged in to your trade account retail prices are shown. If you have any queries please do not hesitate to contact us. Tel: +44 (0) 1257 25 44 44.