A proven ONAIR platform
Our long-running four-corner system, refined through controller, software and wiring-harness revisions.
ONAIR 4V Management System
Need help choosing management?
ONAIR 4V Management System
$1,260.00
$1,510.00
Shipping calculated at checkout.
$250 CAD OFFAlready included in the price. No code needed.
For individual corner control, more presets and iPhone or Apple Watch convenience.
USB-C • CURRENT SOFTWAREChoose management only or an airline-and-fittings package above. Tank, compressor and suspension are separate.
How it controls · Compare systemsQuantity
ONAIR 4V Management System
Add 50Ft of (1/4") Airline + 8 (1/4") Straight PTC Fittings
$1,260.00
$1,510.00
AIR MANAGEMENT SAVINGS$250 CAD OFF EVERY MANAGEMENT SYSTEM
Your $250 CAD savings are already included in the price shown. Choose your control. No code needed.
Build with 5+ eligible items and save a further 10% automatically in your cart through October 31, 2026. Other promotional discounts do not combine.
4V • FOUR-CORNER AIR MANAGEMENT
Every corner.
In your control.
ONAIR’s established four-corner system pairs individual adjustment and five saved presets with iPhone Bluetooth control. A practical upgrade when you want to see and adjust every corner separately.
Choose it forFor individual corner control, more presets and iPhone or Apple Watch convenience.
4Individual corner readings
5Saved pressure presets
iPhoneBluetooth + Apple Watch
USB-CHandheld connection
How it controls
See all four. Adjust each one.
Front left, front right, rear left and rear right each have their own pressure display and control. You can also move the front pair, rear pair or all four corners together.
Tank pressure appears alongside the corner readings, so you can keep an eye on your air reserve.
Presets recall pressure targets. Air pressure is not a measured height: passengers, cargo and setup can change the height at the same PSI.
Try the control layout
Four individual PSI readings
Tank pressure
Both front corners are selected.
Select an area to see which corners move together. This is an illustration, not a live controller.
Bluetooth operation requires the ignition to be on.
On your phone.
Even on your wrist.
Use the 4V Bluetooth app on iPhone, with Apple Watch control available through the supported app setup. Raise or lower the car from your device while the ignition is on.
iPhone control is currently supported. Android support is being updated; contact ONAIR before ordering if Android app control is essential to your setup.
Five saved presets
Store five pressure profiles and recall them from the handheld. Useful if you want more saved positions to choose from.
Rise on start
Configure automatic rise when you turn the ignition on, or keep manual control if that suits your routine.
Air out on shutdown
Optional air-out when the ignition turns off. Your parking routine stays in your control.
Pressure & wiring
A fixed switch at the tank.
The included 1/4-inch external pressure switch threads into the tank. Its factory-set cut-on/cut-off thresholds trigger the relay as tank pressure drops and stop filling once the upper threshold is reached.
External • factory-setBelow cut-onCompressor fills
At cut-offCompressor stops
Compressor control follows tank pressure, not the pressure in your airbags.
The marked values on the supplied switch define its cut-on/cut-off points.
The traditional relay layout.
The supplied separate relay handles compressor power, and the tank-mounted pressure switch provides the pressure-control signal. Fused battery supply goes to 30 and the compressor feed to 87; follow the included diagram for the control and ground connections.
See ONAIR’s compressor wiring guide30Fused battery supply
87Compressor feed
Overview only. Use the included diagram for relay control, ground, fuse ratings and wire sizes. Size each compressor circuit for its load.
CURRENT-GENERATION CONTROL
USB-C on every ONAIR handheld.
2V, 4V, V4 Elite and AirBoy all use a USB-C remote connector and ship with the current software for their system. Use the supplied controller cable for the management connection.
Management package
What you’re getting.
4V four-corner manifold; USB-C digital handheld controller; wiring harness; separate compressor relay; 1/4-inch external tank pressure switch.
Choose management only or an airline-and-fittings package above. Tank, compressor and suspension are separate.
Complete the air supply and suspension around your selected system.Compare systems
Which ONAIR system fits you?
Choose by how you want to control the car, wire the compressor and use the remote.
Scroll across to compare all four systems.
| Feature | 2V | 4VThis system | V4 Elite | AirBoy |
|---|---|---|---|---|
| Adjustment | Front / rear pairs + whole car | Individual corners + pairs + whole car | Individual corners + pairs + whole car | Individual corners + pairs + whole car |
| Saved presets | 3 | 5 | 5 | 3 + separate LOW button |
| Pressure display | Front axle + rear axle + tank | All 4 corners + tank | All 4 corners + tank | All 4 corners + tank |
| Compressor switch | Built-in, adjustable | External, factory-set | Built-in, adjustable | Built-in, adjustable |
| Wiring / relay | Separate relay included | Separate relay + tank switch | Relay prewired into harness | Labelled plug-and-play harness |
| App / wireless control | A–D key fob; no app required | iPhone + Apple Watch; ignition on | Bluetooth app; ignition on | Dedicated Bluetooth app; ignition on |
| Wireless with ignition off | Key fob, while system remains powered | Bluetooth requires ignition on | Bluetooth requires ignition on | Clear + Wireless only, up to 30 min |
| Handheld connection | USB-C | USB-C | USB-C | USB-C |
| Choose it for | Simple daily control + parked-car fob | Proven four-corner control + iPhone | Preassembled wiring + illuminated hardware | Tactile handheld + detailed settings |
| Compare systems | View system | View system | View system | View system |
Make it a complete setup.
Choose your management, then match the suspension, compressor, tank and supporting parts to your build.
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REAL OWNERS. REAL ONAIR.
★★★★★
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