Polyair Ultimate Airbag Kit - Lexus GX 550 J250, Toyota LandCruiser 300 Series and 1 more (standard height)
Shipped Australia wide, or fitted in our Sydenham workshop
Ask the workshop on (02) 9557 3739
Polyair Ultimate Airbag Kit for the Lexus GX 550 J250, Toyota LandCruiser 300 Series and 1 more (standard height).
About the Polyair Ultimate
The Ultimate is the heavy duty version of Polyair's in-coil airbag, built for bigger caravans and heavier loads than the Red Series is set up for. The construction is thicker and the kit includes corrugated tubing to protect the airline.
It fits inside the rear coil spring and adjusts on pressure, so the vehicle still rides properly when it is running empty.
Specification
- Suits standard height
- 60 psi hd kit
- Listed by Polyair for: Lexus GX 550 J250 2024 +, INC 'OVERTRAIL'; Toyota LandCruiser 300 Series 2021+; Toyota LandCruiser Prado 250 Series 2024 +
- Part number 15793ULT
Fitment
- Lexus GX J250, 2024 to current
- Toyota LandCruiser J300, 2021 to current
- Toyota LandCruiser Prado J250, 2024 to current
What you receive
A complete airbag kit for one vehicle: two air springs, two valves, airline, fittings, mounting hardware and instructions.
Shipped Australia wide, with fitting available in our workshop. Polyair warranty applies.
Shipped to you
We ship Australia wide. Stocked parts usually leave within 2 business days. Special order parts are confirmed with a lead time when you order.
Fitted at Heasmans
Prefer us to fit it? Tick “Have us fit it” or book a fitting date and we’ll do it in our Sydenham workshop. Suspension work finishes with a wheel alignment, so the vehicle leaves set up properly.
Warranty
The manufacturer’s warranty covers the parts, and we manage any claim for you. If they’re fitted elsewhere, we’ll need proof of fitting by a qualified workshop.
Buy it here, and we’ll fit it
Most places post you a box. We fit it in our own Sydenham workshop, set it up and check it before you drive out.
- Book a date We’ll confirm a time that suits
- Fitted properly By our own workshop team
- Checked before you leave Wheel alignment and a final check
Fitting for this product
Book a fitting date455-463 Princes Highway, Sydenham NSW · Mon to Fri, 9:00am to 5:30pm
Not sure this is the right part?
Tell us how you use the vehicle and what you carry, and we’ll tell you if something else suits better, even if it’s cheaper.
Or call (02) 9557 3739
We reply Monday to Friday, 9:00am to 5:30pm.
Questions we get asked
Do I need new springs as well?
Some kits include springs and some are dampers only. The “What you receive” list on each product says which. If you want lift or carry extra weight, tell us the height and load and we’ll match the springs to the dampers.
Do I need an alignment afterwards?
Yes. Changing the ride height changes the alignment, so book one in after fitting. If we fit it, the alignment is done before you leave.
Will it affect my warranty?
The parts carry the manufacturer’s warranty, and we manage any claim for you. If they’re fitted elsewhere, we’ll need proof they were fitted by a qualified workshop.
What if I’m not sure which kit suits my car?
Use the form above or call (02) 9557 3739. Tell us what’s on the back and how you use the vehicle, and we’ll recommend the right kit, even if it’s the cheaper one.
Can I return it?
Unopened, unfitted Bilstein and Polyair parts can be returned within 30 days of delivery, with a 20% restocking fee and you covering return freight. Special order parts can’t be returned for change of mind.

