The Airbag Man Helper Kit fits Isuzu D-Max MY21 models (2020-2023, VIN prefix MPATFS40 or MPATFR40) in both 4x4 and 4x2 Hi-Rider configurations, mounting genuine Firestone airbags between the leaf springs and chassis. Adjustable air pressure from 5 PSI unloaded up to 50+ PSI under heavy towing lets you restore factory ride height and correct suspension geometry on demand. This eliminates rear-end squat when towing a caravan or carrying trade equipment, and pairs well with upgraded leaf springs if your D-Max is already sagging. Backed by a lifetime manufacturer's warranty, in stock in Australia with expert fitment support.
Browse all compatible suspension parts for your Helper Kit Isuzu D-Max 2020 On using our parts finder.
| Make | Model | Series | Years | Configuration |
|---|---|---|---|---|
| Isuzu | D-Max | MY21 | 2020-2023 | 4x4 and 4x2 Hi-Rider |
| Isuzu | D-Max | Current Generation | 2020-Current | VIN prefix MPATFS40 or MPATFR40 |
Not sure if this fits your vehicle? Contact our suspension experts or check our FAQ page.
This helper kit works alongside your existing leaf springs rather than replacing them, so pressure — not spring rate — is what you adjust to suit your load. Everyday driving with no accessories needs only 5-20 PSI, while a D-Max fitted with a canopy, drawers, dual battery system or roof-top tent typically sits in the 25-40 PSI range. Towing a caravan, camper trailer or boat calls for 50+ PSI to level the tray and restore correct geometry, and if your factory leaf springs are already sagging under constant accessory weight it's worth looking at upgraded leaf springs as a longer-term fix.
This is an Easy Fit kit, taking around 120 minutes with basic hand tools for someone comfortable working under the vehicle; professional fitment is recommended if you're not confident doing it yourself. Wheel alignment is not typically required for an airbag helper kit, but check alignment if your D-Max has been sagging noticeably before fitment. Test the system at a few different pressures after install to find your settings for unloaded, touring and towing configurations. If you're planning a broader suspension upgrade, pairing this kit with control arm upgrades or fresh shock absorbers can improve overall ride quality at height.
Airbag Man has specialised in Australian air suspension for over 25 years, fitting genuine Firestone airbags backed by a lifetime manufacturer's warranty to thousands of D-Max, Hilux and Ranger owners. Every kit ships with full fitting instructions and QR code access to online install guides, plus Australian-based support if you get stuck. You can view the full Airbag Man range for other utes and wagons.
This kit suits D-Max owners who tow caravans or camper trailers regularly, tradies carrying tools and materials in the tray, and tourers running canopies, drawer systems or water tanks that load up the rear end. If you're chasing consistent load carrying across a mix of empty runs and heavy tows, this airbag suspension kit gives you the adjustability to suit both without swapping components.
In stock now with fast dispatch across Australia. Our team can confirm fitment against your VIN before you order, or help you plan a wider upgrade — browse our full lift kit range for complete suspension solutions.
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.
It fits Isuzu D-Max MY21 models built 2020-2023 in both 4x4 and 4x2 Hi-Rider configurations, identified by VIN prefix MPATFS40 or MPATFR40. If your D-Max is a different generation or you're unsure of your VIN prefix, check our parts finder for the Isuzu D-Max or contact our team directly. Getting the VIN confirmed before ordering avoids any fitment mismatches. We're happy to check it against your rego or build plate for you.
This is a helper kit, not a lift kit — it doesn't raise your D-Max at ride height when empty. Instead it restores factory ride height and geometry once you're loaded or towing, using air pressure from 5 PSI up to 50+ PSI as needed. If you want a permanent height increase, look at our dedicated leaf springs or lift kit ranges instead. This kit is purpose-built to stop sag under load rather than change unladen stance.
You get 2 Firestone rubber airbags, upper and lower mounting brackets, nylon air lines, two individual inflation valves for left/right control, fitting hardware and full instructions with a QR code link to the online guide. The airbags carry a lifetime manufacturer's warranty. An onboard compressor isn't included, so you'll inflate manually via a standard tyre valve unless you add a compressor separately.
Yes, that's one of the main reasons D-Max owners fit this kit. Inflating to 50+ PSI levels the rear end when hitched up, correcting suspension geometry for steadier steering and more effective braking. It's a common pairing with tow-ball loaded caravans and camper trailers where the factory leaf springs alone let the tray sag.
No, control arm upgrades aren't required for this airbag helper kit since it works with your existing leaf spring suspension. If you're also running a raised setup or planning a bigger upgrade, our control arms range can help correct geometry at increased ride height. For this kit on its own, standard control arms are fine.
Wheel alignment isn't typically required for an airbag helper kit since it doesn't change your D-Max's static ride height. That said, if your vehicle was sagging noticeably before you fitted the kit, it's worth having your alignment checked once everything is installed and settled. Our team can advise based on how your specific vehicle was sitting beforehand.
Yes, that's the core function of this kit. Run 5-20 PSI for everyday unloaded driving, 25-40 PSI for touring gear like roof-top tents and dual batteries, and 50+ PSI when towing a caravan or heavy trailer. The two independent inflation valves also let you fine-tune pressure side to side if your load isn't sitting evenly.
No, this helper kit doesn't raise unladen ride height so it won't create extra tyre clearance the way a lift kit does. It only firms up the rear suspension under load to keep the vehicle level. If you're chasing more tyre clearance, you'd need to look at our leaf spring or lift kit options instead.
Firestone backs the airbags in this kit with a lifetime manufacturer's warranty. This covers the airbag units themselves against manufacturing defects for as long as you own the vehicle they're fitted to. Our team can talk you through the warranty terms and process if you ever need to make a claim.
Yes, plenty of D-Max owners run this kit daily and simply drop the pressure down to 5-20 PSI when unloaded to keep ride comfort factory-like. It's when you load up for work, camping or towing that you increase pressure to level the vehicle. The adjustability is what makes it practical for mixed daily and load-carrying use.
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