The Airbag Man Helper Kit suits Isuzu D-Max RG leaf-spring rear ends (2012 to 07/2020), using Firestone air springs fitted alongside the leaf pack to add adjustable load-levelling support without lifting unladen ride height. Air pressure is adjustable to match an empty tray or a loaded caravan tow, and the airbags carry a lifetime manufacturer's warranty. Pair it with heavier-rate leaf springs if you're running a constant heavy load. In stock in Australia, with fitment support from our team.
Airbag Man helper kits use heavy-duty rubber bellows that mount between the chassis and the leaf pack – add air when the load goes on to bring the vehicle back level, then let it out and the standard springs carry on exactly as before. Because each side inflates independently, you can also correct for an off-centre load like a slide-on or water tank.
They shine when the load keeps changing – a van on the towball some weekends, a loaded tray on others. Worth being clear about what they don't do: helper airbags don't increase your GVM or payload; they manage ride height and stability within the vehicle's existing ratings. If the vehicle is always loaded, upgraded springs (with airbags for the variation on top) is the better setup.
Browse all compatible suspension parts for your Helper Kit Isuzu D-Max 2012-2020 using our parts finder.
This kit works with air pressure rather than a fixed spring rate — you inflate the airbags to suit whatever you're carrying and deflate them again for an unladen drive. If you're running a constant heavy load such as a permanent canopy, dual battery tray or slide-on camper, consider stepping up to a heavier-rate leaf spring alongside this kit so the airbags aren't doing all the work. Common accessories that affect how much air support you'll need include steel bullbars and winches up front, and canopies, water tanks, toolboxes or caravan tow ball weight out back.
Fitment uses the existing U-bolts and axle mounting points, making it suited to an experienced DIY installer or a workshop fit in a few hours. Because this kit doesn't change unladen ride height, a wheel alignment isn't mandatory on its own — but get one done if you're also fitting other suspension components at the same time. Check air line fittings and bracket bolts for tightness after the first 500km of use. If you're upgrading the front end as well, pairing this kit with control arm upgrades keeps front and rear geometry balanced.
Airbag Man builds its helper and load-assist kits around genuine Firestone air springs, sourced from a globally recognised air spring manufacturer, and backs the airbags with a lifetime warranty. The brand is used by Australian tradespeople and tourers who need adjustable rear-end support rather than a fixed spring change. You can view the full Airbag Man range for other vehicle applications.
This kit suits D-Max owners who regularly carry a loaded tray or canopy, tow a caravan or camper trailer, or notice the rear end sagging under weight. It's a practical option for tradespeople with a constant work load and tourers who tow only some of the time and want adjustable support rather than a permanently stiffer airbag suspension setup.
In stock in Australia and dispatched fast, with fitment guidance from our suspension team. Browse our full lift kit range if you're planning a wider suspension upgrade for your D-Max.
| Make | Model | Series | Years | Engine |
|---|---|---|---|---|
| Isuzu | D-Max | RG | 2012 - 07/2020 | 3.0L 4JJ1-TCX turbo-diesel |
| Isuzu | D-Max | RG | 2012 - 07/2020 | 2.5L 4JK1-TCX twin-turbo diesel |
Not sure if this fits your vehicle? Contact our suspension experts or check our FAQ page.
New to D-MAX and MU-X suspension? Read our guide to common D-MAX and MU-X suspension problems and how to fix them.
Genuine Airbag Man suspension from an authorised Australian dealer.
This Airbag Man Helper Kit is built specifically for the Isuzu D-Max RG with leaf spring rear suspension, covering the 2012 to July 2020 build range. It suits both the 3.0L 4JJ1-TCX and 2.5L 4JK1-TCX turbo-diesel variants fitted with leaf springs. If you're unsure of your exact build date or rear suspension type, use our parts finder for the D-Max or contact our team before ordering.
This is a helper kit, not a lift kit — it doesn't raise unladen ride height. Instead, the Firestone air springs support the rear leaf pack under load, restoring a level ride height when you're towing or carrying weight. If you want a permanent increase in ride height, look at our raised leaf springs instead of or alongside this kit.
The kit includes two Firestone air springs, upper and lower mounting brackets, U-bolts and hardware to fit to the existing axle and leaf spring, air line, fittings and an air fill valve. Full fitting instructions are supplied and the airbags carry a lifetime manufacturer's warranty. An onboard compressor and in-cab gauge are not included and can be added separately if you want to inflate on the move.
Yes, this is one of the main reasons customers fit it. Increasing air pressure in the bags when towing a caravan or camper trailer helps counter rear-end squat from tow ball weight, keeping the D-Max sitting level. You then deflate the bags again for unladen driving to keep the factory ride quality.
No. This kit fits to the rear leaf spring and axle, so it doesn't affect front control arm geometry and no control arm upgrade is required for fitment. If you're also lifting the front end of your D-Max, our control arm range is worth considering separately for that job.
Not specifically for this kit, because it doesn't change your D-Max's unladen ride height or front-end geometry. If you're fitting it alongside other suspension changes, such as a front lift, get a wheel alignment done as part of that broader job. Always check toe and camber if you notice uneven tyre wear after any suspension work.
The airbags themselves are adjusted by air pressure rather than a fixed spring rate, so you set the support level to suit an empty tray or a fully loaded tow. If you're carrying a constant heavy load, pairing this kit with a heavier-rate leaf spring gives you a stiffer base rate plus adjustable air support on top.
Because this kit doesn't raise ride height, it won't create extra clearance for larger tyres on its own. If you're planning a tyre size increase, you'll need a genuine lift kit with raised springs and matched shocks — talk to our team about options for the D-Max RG.
The Firestone air springs are covered by a lifetime manufacturer's warranty against manufacturing defects. Mounting hardware and fittings are covered under standard consumer guarantee terms. Keep your proof of purchase from 4WD Suspension for any warranty claim.
Yes. Run the airbags at a low pressure or fully deflated for everyday unladen driving to keep the factory-like ride, then increase pressure only when you're loaded or towing. This on/off adjustability is the main advantage over a fixed heavier leaf spring for owners who don't tow every day.
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