The Airbag Man Helper Kit for Coil Springs transforms your Isuzu MU-X 2021+ into a load-carrying and towing champion with adjustable air suspension technology that eliminates spring sag and enhances ride quality. Engineered to work with standard and lifted suspensions, this complete kit delivers instant load leveling, improved steering and braking performance, and safer payload management across all terrains. Backed by Firestone's lifetime manufacturer warranty and designed for easy DIY installation, this Australian-stocked kit includes everything needed for professional-grade air suspension upgrade with expert support available nationwide.
Browse all compatible suspension parts for your Helper Kit For Coil Springs - Suits using our parts finder.
| Make | Model | Series | Years | Variants |
|---|---|---|---|---|
| Isuzu | MU-X | UCS40 | 2021-2023+ | 4x2 & 4x4 (all engines) |
Not sure if this fits your vehicle or which height option to choose? Browse all suspension parts for the Isuzu MU-X or contact our suspension experts for personalized fitment advice and spring rate recommendations.
This kit is available in two configurations to match your vehicle's current suspension setup. The CR5123 option suits vehicles with factory-standard suspension height, while the CR5122 option is specifically designed for Isuzu MU-X models fitted with 40-50mm aftermarket lift kits. Selecting the correct height option ensures proper airbag fitment inside your coil springs, optimal performance, and safe operation. If you've recently installed or plan to install a suspension lift, always choose the CR5122 variant to maintain adequate clearance and airbag travel.
This Airbag Man helper kit is classified as an Easy Fit system with an estimated installation time of 120 minutes for experienced DIY enthusiasts or professional workshops. The kit includes comprehensive step-by-step instructions accessible via QR code, with detailed diagrams covering rear coil removal, airbag placement, airline routing, and inflation procedures. While professional installation is recommended for best results, mechanically inclined owners with basic tools can complete this upgrade at home. After installation, inflate the airbags to the recommended starting pressure (typically 7-10 PSI unloaded) and adjust based on your load to achieve level ride height. For vehicles with aftermarket lifts, consider pairing with upgraded shock absorbers for optimal damping performance across the extended travel range.
Airbag Man has been Australia's trusted name in air suspension systems for over 25 years, specializing in load-leveling solutions for 4WDs, commercial vehicles, caravans, and trailers. Every kit is engineered using genuine Firestone airbags manufactured to OE quality standards, rigorously tested across Australian conditions from Cape York to the Simpson Desert. With a reputation built on product reliability, comprehensive warranty coverage, and responsive customer service, Airbag Man continues to be the first choice for tradies, grey nomads, and touring families who demand dependable performance when it matters most. Explore the complete airbag suspension range for helper kits across hundreds of vehicle applications.
This helper kit is perfect for Isuzu MU-X owners who regularly tow caravans, boats, or trailers, tradespeople carrying heavy tools and materials in the rear cargo area, or families embarking on long-distance touring with rooftop tents, rear drawers, and camping equipment. If you've noticed rear-end sag, reduced braking performance when loaded, or wandering steering while towing, this airbag suspension upgrade delivers immediate and adjustable relief without compromising daily driving comfort. It's equally suited to weekend warriors and full-time adventurers who need versatile load management across varying conditions.
All Airbag Man kits are held in Australian stock for fast dispatch nationwide, backed by expert technical support from our experienced suspension specialists. Whether you're preparing for a lap around Australia or simply need safer load-carrying for work and family duties, this helper kit delivers proven performance and peace of mind. Browse our complete range of lift kits and suspension upgrades to build the ultimate Isuzu MU-X setup tailored to your exact requirements.
Yes, this kit is specifically engineered for the Isuzu MU-X UCS40 series from 2021 onwards, covering both 4x2 and 4x4 variants with all available engine options. You must select the correct height option: CR5123 for factory standard suspension or CR5122 if your vehicle has a 40-50mm aftermarket lift kit installed. The kit fits inside your existing rear coil springs and works with factory shocks, though upgraded dampers are recommended for lifted vehicles. If you're unsure about your suspension setup or have modified your MU-X, contact our team for confirmation before ordering to ensure perfect compatibility.
This helper kit doesn't technically increase your vehicle's legal payload capacity as defined by the manufacturer's GVM rating, but it does allow you to safely carry loads up to the maximum rated capacity without experiencing rear-end sag or suspension bottoming. The Firestone airbags provide supplementary support adjustable from 5-100 PSI, effectively restoring factory ride height and suspension geometry when loaded with cargo, passengers, or towing heavy trailers. This means you can utilize your MU-X's full rated capacity while maintaining optimal handling, braking performance, and ride comfort. Always stay within your vehicle's specified GVM and GCM limits regardless of airbag pressure.
This complete helper kit includes everything required for installation: two Firestone Coil-Rite airbags for the rear suspension, all necessary stainless steel mounting hardware and brackets, high-grade nylon airline tubing, quick-connect fittings, and comprehensive fitting instructions accessible via QR code. The kit is supplied as either CR5123 (standard height) or CR5122 (40-50mm lifted) depending on your selection. You'll need to source a manual inflation valve, in-cab inflation system, or onboard compressor separately if you want convenient pressure adjustment without crawling under the vehicle. Installation hardware is vehicle-specific and no modifications to your MU-X are required for fitment.
Absolutely—this is one of the most popular upgrades for MU-X owners who regularly tow caravans, camper trailers, boats, or heavy trailers. The adjustable airbags dramatically reduce rear-end squat, eliminate dangerous sway and porpoising, maintain correct headlight aim, and restore proper weight distribution for safer braking and steering response. By keeping your MU-X level under towball loads up to your vehicle's rated capacity, the kit also prevents premature wear on suspension components and reduces stress on your chassis. Many touring families consider this essential equipment before embarking on long-distance caravan adventures across Australia, and it pairs perfectly with a weight distribution hitch for maximum towing stability.
No, this airbag helper kit works with your factory control arms and doesn't require any additional suspension modifications for standard or moderately lifted vehicles. The airbags install inside your existing rear coil springs and don't alter suspension geometry or articulation in ways that would necessitate control arm upgrades. However, if you're running a 40-50mm lift (CR5122 option) or planning to add one in the future, upgraded control arms with adjustable camber correction can improve overall handling and tire wear, though they're not mandatory for airbag fitment. Focus on the airbags first for load management, then consider control arm upgrades as part of a broader suspension enhancement strategy.
A full four-wheel alignment is not strictly mandatory after installing this helper kit since you're not altering suspension mounting points or geometry like you would with a lift kit or new control arms. However, it's good practice to have your alignment checked after any suspension work, especially if you're fitting the CR5122 option on an already lifted vehicle or if you're inflating the airbags to higher pressures that change ride height. Most installers will check alignment as part of their standard procedure. At minimum, verify your steering wheel is centered and tire wear patterns are even after a few hundred kilometers of driving with the airbags adjusted to your typical load.
Yes, adjustability is the primary advantage of this system—you can inflate or deflate the airbags anywhere from 5 PSI (minimum) to 100 PSI (maximum) to match your exact load requirements at any given time. Run lower pressures when driving unloaded for maximum comfort, then increase pressure progressively as you add cargo, passengers, or hook up a trailer until your MU-X returns to level ride height. Start with 7-10 PSI as a baseline and adjust in 5 PSI increments while observing your vehicle's stance. For convenience, many users add an in-cab inflation system or onboard compressor with dashboard controls, allowing pressure adjustment without getting under the vehicle. Never exceed 100 PSI or run below 5 PSI during operation.
This airbag helper kit is designed for load leveling and doesn't provide additional suspension lift or tire clearance beyond maintaining your vehicle's factory or existing lifted ride height when loaded. If you have the standard CR5123 kit, you'll maintain factory tire clearances (typically up to 265/65R17 or 265/60R18 depending on your model). If you've selected the CR5122 option for a 40-50mm lifted MU-X, you should already have clearance for modestly larger tires, and the airbags will help maintain that clearance when loaded. For significant tire size increases beyond 275mm width or 32-inch diameter, you'll need a dedicated suspension lift kit with appropriate shock and spring upgrades rather than just airbag helpers.
The Firestone airbags included in this kit are backed by a comprehensive lifetime manufacturer warranty covering defects in materials and workmanship under normal use conditions—one of the best warranties in the industry. This demonstrates Firestone's confidence in their reinforced rubber construction and heavy-duty crimped end cap design. The associated hardware, fittings, and airlines carry a standard manufacturer warranty (typically 12 months). Warranty claims are handled through 4WD Suspension Australia with support from Airbag Man, and the team has decades of experience ensuring customer satisfaction. Keep your proof of purchase and follow the installation and operating instructions provided with the kit to maintain full warranty coverage throughout your ownership.
This kit is absolutely suitable for daily driving and is actually one of its key advantages over harsh heavy-duty spring upgrades—you can run low airbag pressure (5-10 PSI) when driving unloaded, preserving the MU-X's excellent factory ride quality for commuting, school runs, and weekend errands. Then simply increase pressure when you load up for work, holidays, or towing without any compromise. Many owners leave a baseline 7 PSI in the bags permanently for a slightly firmer feel and run them daily with no issues. The Firestone airbags are designed for continuous use across all driving conditions, from city streets to outback corrugations, making this one of the most versatile suspension upgrades available for owners who need both comfort and capability.
Perfect for Our Loaded Family Camping Trips
Recently fitted these airbag helpers to our MU-X before a long weekend down the coast with the van in tow and the difference was night and day. The rear end sat level even with all the camping gear, kids' bikes, and a full water tank loaded up. Installation was straightforward enough to tackle in the driveway, and the ride quality stayed comfortable even when we hit some rougher tracks heading into our campsite.(5)
Essential Upgrade for Remote Touring with Load
Been running these airbag helpers on my MU-X through the Simpson Desert and Cape York, and they've completely transformed how the rear end handles with a full water and fuel load. The adjustability means I can dial in the perfect ride height whether I'm loaded up for a three-week trip or running light on day tracks. Fitment was spot-on and installation straightforward enough for a home job. Worth every cent for anyone serious about remote touring.(5)
Perfect for Our Loaded Family Camping Trips
These Airbag Man helper springs have been a game changer for our MU-X when we load up the camper trailer and all the family gear for weekends away. The rear end no longer sags under weight and the ride quality stays surprisingly comfortable even on corrugated tracks. Installation was straightforward enough, and being able to adjust the pressure for different loads is brilliant. Wish I'd fitted them sooner – they've made our Cape York trip so much more enjoyable.(5)
Perfect for Daily Work and Weekend Trips
Been running these airbag helper springs on my MU-X for about three months now and they've made a massive difference when I'm loaded up with tools and materials during the week. The ride is heaps better than before, no more sagging in the rear when I've got a full load on. Installation was pretty straightforward too, and they've handled everything from city work to a couple of beach runs without any dramas.(5)
Perfect Solution for Our Loaded Family Camper
Recently fitted the Airbag Man helper kit to our 2022 MU-X and the difference when towing our camper trailer is night and day. We regularly head up to the high country with the kids and all the gear, and the rear used to sag quite a bit. The airbags have levelled everything out beautifully and the ride quality is so much better, even on corrugated dirt roads.(5)
Add your favourites to cart
Log into or create your Afterpay account, with instant approval decision
Your purchase will be split into 4 payments, payable every 2 weeks
All you need to apply is to have a debit or credit card, to be over 18 years of age, and to be a resident of country offering Afterpay
Late fees and additional eligibility criteria apply. The first payment may be due at the time of purchase
For complete terms visit afterpay.com/terms
