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Boss coil helper air bag kit (Coil Assist)
Boss Coil Assist kits add Boss Extreme Series airbags to coil sprung 4WDs and utes so the rear can be levelled under load with air.
From RRP $745 + fitment (excl. freight)
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- Fitted in our Miami workshop. We only fit parts we supply.
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About the coil helper air bag kit (Coil Assist)
Boss Coil Assist kits add Boss Extreme Series airbags to coil sprung 4WDs and utes so the rear can be levelled under load with air.
Kits are vehicle specific, with versions for up to 2 inch lift and greater than 2 inch lift..
Features
- Boss Extreme Series double or triple bellow airbags
- Rated 2500 lb (1136 kg) per side on most kits
- Government approved tested to over 750 PSI
- Separate kits for up to 2 inch and greater than 2 inch lift
- No drilling required on listed kits such as LandCruiser 300 and Prado 250
Want it fitted? Tell us your ute and we text you a fitted price within one business day.
Get your fitted priceCall (07) 5572 1711Specifications
| Airbag rating | 2500 lb / 1136 kg per side on most kits (2600 lb on some) |
|---|---|
| Test pressure | Government approved tested to over 750 PSI |
| Typical operating pressure | Around 15 to 45 PSI depending on load |
| Fitting position | Rear |
| Effect on GVM | Boss states a Load Assist kit does not increase GVM |
| Part numbers | 15 vehicle specific kits (see variants) |
| RRP | $745 to $970 |
| RRP note | 1 listing(s) show no price (price on application) |
| What's in the box | 2 x Boss Extreme Series airbags, 4 x brackets (2 upper and 2 lower), Mounting hardware, SAE J844 government approved airline, Dual Schrader valves mounted in a stainless panel, Fitting instructions |
| Brand | Boss |
| Warranty | 5 year waranty on and off road |
| Price | From RRP $745 + fitment (excl. freight) to $970 |
Downloads
- Boss fitting instructions LA-84PDF from Boss
- Boss fitting instructions LA-T70PDF from Boss
- Boss fitting instructions LA-T54PDF from Boss
- Boss fitting instructions LA-T45PDF from Boss
- Boss fitting instructions LA-T15PDF from Boss
- Boss fitting instructions LA-T133PDF from Boss
- Boss fitting instructions LA-T115PDF from Boss
- Boss fitting instructions LA-100 LiftedPDF from Boss
- Boss fitting instructions LA-100PDF from Boss
Fitted in Miami
We fit air suspension at our Miami workshop, run the air lines clear of heat and moving parts, and set the pressures for how you load the vehicle.
Vehicles it suits
15 fitments listed. Prices are RRP plus fitment, excluding freight.
| Vehicle | Part number | RRP | Quote |
|---|---|---|---|
| Ford Ranger Raptor T6 19-21 Gen One (greater than 2 inch lift) | LA-T45 | $890 | Get price |
| Ford Ranger Raptor, Gen1 or Gen2 (Any lift) | LA-T54 | $970 | Get price |
| Ford Ranger Raptor, Gen1 or Gen2 (Standard height) | LA-54 | $910 | Get price |
| Nissan Navara NP300 (D23) | CL-LA-115 | On request | Get price |
| Nissan Navara NP300 4WD (greater than 2 inch lift) | LA-T115 | $805 | Get price |
| Nissan Navara NP300 4WD (up to 2 inch lift) | LA-115 | $745 | Get price |
| Nissan Patrol 4WD (greater than 2 inch lift) | LA-T15 | $805 | Get price |
| Nissan Patrol 4WD (up to 2 inch lift) | LA-15 | $745 | Get price |
| RAM 1500 DS 2009-Mid 2020 (greater than 2 inch lift) | LA-T70 | $890 | Get price |
| Toyota LandCruiser 300 & Prado 250 series (greater than 2 inch lift) | LA-T84 | $805 | Get price |
| Toyota LandCruiser 300 & Prado 250 series (up to 2 inch lift) | LA-84 | $745 | Get price |
| Toyota Landcruiser 80/100 Series (standard height) | LA-100 | $830 | Get price |
| Toyota Landcruiser Series 80/100 (with a 2 inch lift) | LA-100 Lifted | $855 | Get price |
| Toyota Prado 120 & 150 Series (greater than 2 inch lift) | LA-T133 | $805 | Get price |
| Toyota Prado 120 & 150 Series (up to 2 inch lift) | LA-133 | $745 | Get price |
Video
Want it fitted? Tell us your ute and we text you a fitted price within one business day.
Get your fitted priceCall (07) 5572 1711Prices are the supplier's recommended retail price for the part, plus fitment by our technicians, excluding freight. Freight is charged where stock is shipped to us for your job. Every part is fitted in our Miami workshop and covered by the maker's warranty plus our workmanship guarantee. Prices checked 21 October 2026.
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