The Airbag Man Helper Kit for Coil Springs transforms your Isuzu MU-X 2013-ON into a load-levelling powerhouse, using adjustable air pressure technology to eliminate spring sag and restore factory ride height under heavy loads. Available in standard and 2-inch lifted configurations, this airbag suspension kit delivers superior towing stability, improved braking performance, and enhanced steering response—whether you're hauling trailers, carrying camping gear, or towing caravans across Australia. Backed by Firestone's lifetime manufacturer warranty and designed for easy DIY installation in under 2 hours, this is the smart upgrade for serious tourers and tradies.
Browse all compatible suspension parts for your Helper Kit For Coil Springs - Suits using our parts finder.
| Make | Model | Series/Code | Years | Drive Type |
|---|---|---|---|---|
| Isuzu | MU-X | UCS85 (1st Gen) | 2013-2021 | 4x2 & 4x4 |
| Isuzu | MU-X | RJ (2nd Gen) | 2021-Current | 4x2 & 4x4 |
Not sure if this fits your vehicle or which kit option to choose? Contact our suspension experts for personalized advice or explore all suspension parts for the Isuzu MU-X in our parts finder.
Choose the CR5122 kit if your Isuzu MU-X runs factory-standard suspension height. If you've installed a 2-inch lift kit using raised coil springs or extended shock absorbers, select the CR5133 variant to ensure proper airbag positioning and clearance. The standard kit works perfectly with OEM suspension, while the lifted version accommodates the changed rear-end geometry of aftermarket lift configurations. Both kits deliver identical load-carrying performance and adjustment range—the only difference is mounting position to suit your current ride height.
This Airbag Man Helper Kit is classified as an "Easy Fit" system, with installation achievable by experienced DIY enthusiasts in approximately 120 minutes using common hand tools. The kit includes comprehensive step-by-step instructions accessible via QR code or the Airbag Man website, with detailed photos showing exact mounting locations for the MU-X chassis. No drilling or permanent modifications are required—all mounting points utilize existing chassis holes or bolt-on bracket locations. While wheel alignment is not mandatory for helper spring installation (unlike suspension components that alter geometry), we recommend a visual inspection of all suspension hardware and a test drive to verify even tire wear and straight-line tracking after fitting.
Airbag Man has been Australia's leading air suspension specialist for over 25 years, with products proven across outback touring, commercial fleets, and emergency services vehicles. Every kit uses genuine Firestone air springs manufactured to exacting standards and tested under real-world Australian conditions—from corrugated desert tracks to coastal towing applications. Renowned for exceptional customer service and comprehensive technical support, Airbag Man stands behind every product with industry-leading warranties and a commitment to solving load-carrying challenges for Australian 4WD owners.
This helper kit is ideal for Isuzu MU-X owners who regularly tow caravans, boat trailers, or camper trailers and need on-demand load support without sacrificing unladen ride comfort. It's perfect for grey nomads touring Australia, tradespeople carrying tools and equipment, families with loaded roof racks and rear cargo, and anyone experiencing rear sag or wandering steering under load. If you frequently adjust between light daily driving and heavy weekend towing, or if your shock absorbers are already working hard to control a loaded rear end, this adjustable air system provides the versatility you need.
Ready to eliminate sag and improve your MU-X's load-carrying performance? This Airbag Man Helper Kit is in stock now at 4WD Suspension Australia with fast dispatch to all states and territories. Our suspension specialists are available to answer fitment questions and help you choose the right configuration for your specific setup—whether you're running factory suspension or an aftermarket lift. Order today and experience the difference adjustable air support makes to towing stability and ride quality.
This kit suits all Isuzu MU-X models from 2013 onwards, including both UCS85 (2013-2021) and RJ series (2021-current) in 4x2 and 4x4 drivetrain configurations. It's compatible with factory standard suspension as well as vehicles with aftermarket modifications—simply select CR5122 for standard height or CR5133 if you've installed a 2-inch lift kit. If you've fitted other suspension modifications or aren't sure which variant you have, contact our team to confirm the correct kit for your specific MU-X.
While this kit doesn't technically increase your vehicle's GVM or legal load rating (which are set by the manufacturer), it provides up to 1,000kg of additional spring support to help your existing suspension carry loads more effectively. The adjustable air pressure allows you to dial in the exact support needed based on your current load—whether that's 200kg of camping gear or a 2,500kg caravan on the towball. This prevents spring compression and maintains proper suspension geometry under loads that would otherwise cause factory springs to sag significantly.
The kit includes everything needed for installation: two Firestone air helper springs designed specifically for coil spring applications, all mounting brackets and hardware, nylon air lines, inline inflation valves for easy pressure adjustment, fittings and connectors, plus comprehensive fitting instructions with QR code access to online manuals. You don't need to purchase any additional components—it's a complete bolt-on solution. The only items not included are basic hand tools for installation and an air compressor or service station air line for initial inflation and adjustment.
Absolutely—towing is one of the primary applications for this system. The adjustable air pressure eliminates rear-end sag caused by towball weight, maintains level ride height for optimal weight distribution, and dramatically reduces body roll and sway when cornering or in crosswinds. This results in improved steering response, better braking performance, reduced trailer sway, and a more confident towing experience overall. Many Australian caravan owners consider airbag helpers essential for safe long-distance towing, especially on highways and in emergency maneuvering situations.
No, this helper kit works with your existing suspension components without requiring control arm upgrades or other modifications. It's designed as a supplementary load-support system that assists your factory coil springs rather than replacing them. However, if you're planning a comprehensive suspension upgrade for improved off-road performance or significant lift height, you might consider pairing airbags with upgraded shocks, springs, and control arms as part of a complete system—but the airbag kit functions perfectly well on its own for load-leveling and towing applications.
Wheel alignment is not mandatory after fitting this airbag helper kit, as it doesn't alter your suspension geometry or steering angles the way lift kits or control arm changes do. The airbags simply provide additional load support within your existing suspension travel range. That said, if your vehicle hasn't had an alignment check recently or if you notice uneven tire wear, it's always good practice to have alignment verified—especially before embarking on long touring trips with heavy loads where proper tire contact and wear patterns are critical for safety and performance.
Air pressure adjustment is extremely simple and requires no special tools—just access to an air compressor (portable 12V unit, garage compressor, or service station air line). The kit includes inline inflation valves mounted in accessible locations, allowing you to add or release air pressure in minutes using a standard tire chuck. Most users set their pressure based on load conditions: lower pressure (20-40 PSI) for light loads and daily driving, medium pressure (40-70 PSI) for moderate cargo, and higher pressure (70-100 PSI) for heavy towing or maximum load carrying. Adjustments take less than five minutes and can be done roadside if needed.
This helper kit doesn't provide suspension lift height—it's designed to restore and maintain your existing ride height under load rather than raise it. If you choose the CR5122 standard kit, your ride height remains factory specification; the CR5133 variant suits vehicles already fitted with 2-inch lift kits but doesn't add additional lift itself. For fitting larger tyres, you'll need an actual suspension lift kit that raises your vehicle's clearance. However, this airbag system works perfectly alongside lift kits and larger tyres to provide load support and maintain level stance when your lifted MU-X is carrying heavy cargo or towing.
The Firestone airbags included in this kit are backed by a lifetime manufacturer's warranty against defects in materials and workmanship—one of the best warranties in the air suspension industry. This lifetime coverage reflects Firestone's confidence in their product durability and construction quality. Associated components like brackets, airlines, and fittings carry standard manufacturer warranties. Warranty claims are handled through Airbag Man's Australian support network, and our team at 4WD Suspension can assist with any warranty questions or technical support you might need during ownership.
Yes, this is one of the major advantages of an adjustable air helper system—it doesn't compromise your ride quality when unladen. Simply reduce air pressure to the minimum (around 5-10 PSI) or completely deflate the airbags when driving without cargo or towing, and your factory suspension operates normally with its original comfort characteristics. When you need load support, inflate to the appropriate pressure in minutes. This on-demand adjustability makes it perfect for vehicles that switch between daily commuting and weekend touring or towing, giving you the best of both worlds without the harsh ride of permanent heavy-duty springs.
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