Description
Key Features & Benefits
- Eliminates Spring Sag: Keeps your Ranger at factory ride height even when fully loaded.
- Works with Standard, Raised & Lowered Suspensions: Versatile across different setups.
- Better Steering & Braking: Improved handling for towing caravans or hauling heavy gear.
- Enhanced Ride Comfort: Reduces bumps and vibration for a smoother experience.
- Adjustable Ride Height: Fine tune pressure for perfect clearance on or off-road.
- Improved Stability & Handling: Less sway, more control, especially on corners.
- Prevents Bottoming Out: Protects suspension under heavy load conditions.
- Even Tyre Wear: Distributes weight evenly for longer tyre life.
- Quick, Easy Installation: Complete kit installs in around 120 minutes.
- Lifetime Firestone Warranty: Peace of mind with trusted quality airbags.
What’s Included in the Airbag Man RR4639 Air Suspension Kit?
The RR4639 kit comes with everything you need for a smooth installation:
- Heavy duty Firestone airbags.
- Complete mounting hardware & brackets.
- Nylon tubing and fittings.
- Step by step guide with QR code access for installation videos.
No extra parts needed, it’s a ready to fit solution for your Ford Ranger PX.
Fitment, Pressure and Height Details
- Fitment Position: Rear Axle
- Fitment Type: Easy Fit Kit, no special tools required
- Install Time: Approx. 120 minutes
- Max Pressure: 50 PSI
- Airbag Height Range: 5.5” – 6.5”
- Warranty: Limited Lifetime Firestone Manufacturer’s Warranty
Why Choose Opposite Lock Cardiff?
- 15+ years of 4×4 upgrade expertise
- Professional installation for Ford
- Ranger suspension kit
- Serving Newcastle, Hunter Valley, Maitland, Port Stephens & Central Coast
- Authorized dealer for Airbag Man & Firestone products
- Friendly, experienced team offering after sales support
Give your Ford Ranger PX the stability, comfort, and load control it deserves.
Frequently Asked Questions
Will this kit fit my Ford Ranger PX?
Yes. It’s compatible with PX, PX II & PX III T6 4×2 Not Hi-Rider models (2017-2022).
How difficult is the installation?
It’s an easy fit kit designed for DIY installation or professional fitting at Opposite Lock Cardiff.
Can it handle heavy towing?
Absolutely. It improves load balance, steering control, and overall towing safety for caravans and trailers.
Is the height adjustable?
Yes, air pressure adjustments allow you to fine-tune ride height and stability to suit your load.
Do the airbags come with a warranty?
Yes, Firestone airbags are backed by a lifetime manufacturer’s warranty.

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