Reviewed by Andrew, 4WD Suspension fitment team
The Airbag Man Helper Kit for the Nissan Navara D23 NP300 Coil Rear (2015-2025) stops rear-end sag under load, fitting heavy-duty air helper springs inside the rear coil springs. Adjustable air pressure lets you restore factory ride height and correct suspension geometry on demand when towing or carrying weight, then drop back for unloaded comfort. Choose from 6 options in the dropdown: Series 1-3 Standard Height (CR5134); Series 1-3 Standard - High Pressure (CR5134HP); Series 1-3 Raised / Series 4-5 Standard (CR5135); S1-3 Raised / S4-5 Standard - High Pressure (CR5135HP); Series 4-5 Raised / Warrior Standard (CR5136); S4-5 Raised / Warrior Std - High Pressure (CR5136HP). Backed by a lifetime manufacturer's warranty on the air springs, in stock in Australia with expert fitment support.
Doing the whole vehicle at once? We also stock the matching rear Coil Springs and rear Shock Absorbers for the Nissan Navara NP300 Coil Rear.
Browse all compatible suspension parts for your Nissan Navara NP300 Coil Rear using our parts finder.
Pick a Standard Height kit if your Nissan Navara NP300 Coil Rear is at factory ride height. Pick a Raised kit if the vehicle runs a suspension lift - raised kits are built for the greater distance between the suspension and chassis so the air spring operates in its correct working range.
The air springs fit inside the existing rear coil springs - a bolt-in job with no spring removal on most vehicles. Air lines route to inflation valves (commonly mounted at the rear bar) so each side adjusts independently. Run minimum pressure (5 psi) unloaded and increase pressure to level the vehicle when towing or loaded - up to 30 psi on standard kits or 60 psi on HP kits. An optional Airbag Man onboard air control kit (AC3021) lets you adjust pressures from the cabin.
| Make | Model | Series | Years | Configuration |
|---|---|---|---|---|
| Nissan | Navara | D23 NP300 Dual Cab Coil Rear Series 1-3 | 2015 - 2019 | 4x2 & 4x4 |
| Nissan | Navara | D23 NP300 Dual Cab Coil Rear Series 4-5 incl. N-Trek / Pro-4X Warrior | 2019 - 2025 | 4x2 & 4x4 |
The right kit depends on your series AND ride height - Series 4-5 and Warrior models sit higher from factory, so a kit that is "raised" for Series 1-3 is "standard" for them.
Not sure which kit you need? Contact our suspension experts and we can confirm the right part from your rego.
Last updated: 7 September 2026
Genuine Airbag Man suspension from an authorised Australian dealer.
New to Navara suspension? Read our Navara suspension problems guide.
| Specification | Detail |
|---|---|
| Position | Rear axle, in-coil (fits inside the existing rear coil springs) |
| Air spring type | Airbag Man polyurethane air helper springs (Firestone) |
| Operating pressure, standard kits | 5 - 30 psi |
| Operating pressure, HP kits | 5 - 60 psi (high-pressure sleeve) |
| Kit options | CR5134 / CR5134HP standard height; CR5135 / CR5135HP raised 25-30 mm; CR5136 / CR5136HP raised 40-50 mm |
| Kit contents | 2 x air springs, vehicle-specific mounts, fasteners, air fittings, air line tubing, 2 x inflation valves, fitting instructions (HP kits add high-pressure sleeves and end protectors) |
| Typical fitting time | About 120 minutes |
| Vehicle | Nissan Navara D23 NP300 Dual Cab Coil Rear, 4x2 and 4x4, 2015 - 2025 |
| Warranty | Airbag limited lifetime manufacturer's warranty on the air springs |
Figures from Airbag Man product data. A helper kit assists the coil springs; it does not increase the vehicle's GVM or towing capacity.
It fits the Nissan Navara D23 NP300 Dual Cab Coil Rear Series 1-3 2015 - 2019 and Nissan Navara D23 NP300 Dual Cab Coil Rear Series 4-5 incl. N-Trek / Pro-4X Warrior 2019 - 2025. The right kit depends on your series AND ride height - Series 4-5 and Warrior models sit higher from factory, so a kit that is "raised" for Series 1-3 is "standard" for them. Contact us with your rego if you are unsure and we will confirm the exact kit.
This is a helper kit, not a lift kit - it does not raise your vehicle at ride height. Its job is to stop the rear sagging under load: inflating the air springs restores factory ride height when towing or carrying weight, then you drop pressure back for unloaded driving.
You get two heavy-duty air springs (in-coil air helper springs), air line, inflation valves, fittings and mounting hardware for a bolt-in installation on the rear axle. Exact contents vary slightly by part number - the product photo shows the selected kit.
Match your series and current ride height to the part number below. Pick the HP (high pressure) version if you tow heavy or run near GVM most of the time.
| Navara | Rear ride height | Standard kit | High pressure kit |
|---|---|---|---|
| Series 1-3 (2015-2019) | Factory height | CR5134 | CR5134HP |
| Series 1-3 (2015-2019) | Lifted 25-30 mm | CR5135 | CR5135HP |
| Series 1-3 (2015-2019) | Lifted 40-50 mm | CR5136 | CR5136HP |
| Series 4-5 (2019-2025), non N-Trek / Pro-4X | Factory height | CR5135 | CR5135HP |
| Series 4-5 (2019-2025), non N-Trek / Pro-4X | Lifted | CR5136 | CR5136HP |
| N-Trek Warrior / Pro-4X Warrior | Factory height | CR5136 | CR5136HP |
Still unsure? Send us your rego and we will confirm the exact kit.
The standard kit uses Airbag Man's polyurethane in-coil air springs rated 5-30 psi. The HP kit adds a high-pressure sleeve over the same air spring, doubling the working pressure to 5-60 psi. Choose HP for heavy towing or if the ute is regularly loaded to its maximum allowable weight. Both carry Airbag Man's limited lifetime manufacturer's warranty on the air springs.
No. The kit comes with two inflation valves, so you can set pressure at any servo air hose or with a portable 12V compressor. The optional Airbag Man AC3021 onboard air control kit only adds in-cab adjustment for people who change loads often.
No. A helper kit supports the coil springs under load but does not raise the vehicle's GVM or towing capacity, and you must still stay within Nissan's ratings. It is a bolt-in accessory that fits inside the existing coils, so the factory suspension is left in place.
Start at 5 psi with the ute unloaded. Hitch the van, then add pressure a few psi at a time until the rear sits level again, staying within 30 psi on a standard kit or 60 psi on an HP kit. The aim is level, not lifted. Drop back to 5 psi once you unhitch.
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