Sherpa 4x4 'BIG V4' Quad-Air Bundle – (400 L/min) 4-Tyre Inflation System

Sherpa 4x4 'BIG V4' Quad-Air Bundle – 400L/min 4-Tyre Inflation System

400L/min | Inflate 4 Tyres at Once | Pre-Set Pressure Control | 12V & 24V Options

Four 37" tyres. From 9 to 38 PSI. In just over 5 minutes — all at the same time.

Take the hassle out of airing up with the Sherpa 4x4 'BIG V4' Quad-Air Bundle — a serious high-output four-tyre inflation system designed for 4WDs, touring vehicles, trucks and demanding off-road applications.

At the heart of the system is the Sherpa 4x4 BIG V4, a powerful 4-cylinder portable compressor delivering up to 400L/min free air delivery. Combined with the Quad-Air hose system, that massive airflow can be distributed to all four tyres simultaneously.

In real-world testing, the BIG V4 Quad-Air Bundle inflated four 37" tyres simultaneously from 9 to 38 PSI in just over 5 minutes. Connect all four tyres, set your desired pressure and let the system do the work — no moving a single hose from wheel to wheel.

The BIG V4's pre-set pressure control makes operation simple, while the four-hose Quad-Air system helps achieve consistent pressures across the vehicle. Everything packs neatly into the supplied heavy-duty carry bag for convenient transport and storage.

IMPORTANT – VEHICLE ENGINE MUST BE RUNNING DURING COMPRESSOR OPERATION
The BIG V4 is a high-current compressor and must only be operated with the vehicle’s engine running and the battery being actively charged by the vehicle alternator.

DO NOT operate the compressor from a stand-alone battery that is not being charged. Doing so may cause excessive voltage drop, damage to the compressor or electrical components, and may void the warranty.

WHY QUAD-AIR?

• Four 37" Tyres: 9–38 PSI in Just Over 5 Minutes – Proven simultaneous four-tyre inflation performance.
• Inflate All 4 Tyres at Once – Connect once and air up the entire vehicle together.
• 400L/min Maximum Air Flow – Huge free-air delivery for rapid inflation of large off-road tyres.
• Consistent Tyre Pressure – Simultaneous inflation helps achieve consistent pressure across all four tyres.
• Pre-Set Pressure Control – Select your target pressure and let the BIG V4 manage inflation.
• Less Hassle – No repeatedly moving an inflation hose from tyre to tyre.
• Ideal After Airing Down – Perfect for returning to road pressures after beach driving, sand, mud or technical off-road tracks.
• Built for Large Vehicles – Suited to 4WDs, touring rigs, trucks, caravans, trailers and other demanding applications.

BIG V4 COMPRESSOR FEATURES

• Massive 400L/min Output – Serious airflow for rapid tyre inflation.
• 4-Cylinder V4 Design – High-volume, oil-free compressor designed for demanding use.
• Pre-Set Pressure Control System – Set your desired pressure directly at the compressor.
• Heavy-Duty Electrical System – Engineered to support the BIG V4's high current requirements.
• 5AWG Power Cables – Heavy-duty 2.2m power leads minimise voltage drop under high load.
• 120A Anderson-Style Connection – Robust high-current connection for reliable operation.
• 125A Inline Fuse – Provides electrical protection for the 12V system.
• High-Capacity Cooling – Oversized cooling fans and heat-dissipating cylinder fins help manage temperature during demanding inflation jobs.
• Oil-Free Operation – Clean air output with no compressor oil maintenance required.
• Heavy-Duty Carry Bag – Keeps the compressor and Quad-Air accessories together and protected during transport and storage.

QUAD-AIR INFLATION SYSTEM

The Quad-Air system transforms the BIG V4 from an exceptionally powerful portable compressor into a convenient four-tyre inflation station.

Four individual air hoses run from the central distribution system to each tyre. The supplied Y-connectors divide the BIG V4's massive airflow between the front and rear of the vehicle, while the individual non-return valve assemblies help control airflow through the system.

Once connected, all four tyres can be inflated together rather than individually. This is particularly useful for large 4WDs where tyres may have been dropped substantially for sand, corrugations or technical off-road driving.

The result is a faster, simpler airing-up process with less walking around the vehicle and more consistent final tyre pressures.

PERFORMANCE

This is where the BIG V4 Quad-Air Bundle earns its name.

With up to 400L/min free air delivery, the four-cylinder BIG V4 has the airflow to take full advantage of a four-tyre inflation system.

BIG V4 Quad-Air Bundle testing achieved:

• Four 37" tyres simultaneously, 9–38 PSI: just over 5 minutes
• One 215/60R16 tyre, 0–35 PSI: under 50 seconds
  
  

Rather than inflating each tyre individually, the Quad-Air system distributes the BIG V4's high-volume output across all four tyres simultaneously. For 4WD owners who regularly air down for sand, corrugations and off-road tracks, that means less time spent moving between wheels and more time getting back on the road.

Inflation times will vary depending on tyre size and construction, starting and target pressures, battery voltage, ambient conditions and other operating factors.

BUILT FOR AUSTRALIAN OFF-ROAD CONDITIONS

The BIG V4 has been engineered for demanding touring and off-road use, with heavy-duty electrical components, substantial cooling capacity and robust construction.

Precision-machined compressor components, large cooling fins and powerful fans help dissipate heat, while the upgraded 5AWG electrical leads are designed to deliver the high current required by the compressor with minimal voltage loss.

Whether you're airing back up after a day on the beach, leaving a remote off-road track or adjusting pressures to suit a heavy touring load, the BIG V4 Quad-Air Bundle gives you the airflow and convenience to get the job done quickly.

12V & 24V VEHICLE OPTIONS

The 12V BIG V4 operates from a suitable high-current 12V vehicle electrical supply.

For 24V vehicles, the bundle is available with a heavy-duty 24V to 13.8V DC/DC converter together with battery connector cables, eyelet terminals and a 120A Anderson-style connection, allowing the BIG V4 system to be used with compatible 24V trucks and touring vehicles.

This makes the Quad-Air Bundle an excellent option for everything from conventional 12V 4WDs through to larger 24V expedition and off-road trucks.

IMPORTANT – VEHICLE ENGINE MUST BE RUNNING DURING COMPRESSOR OPERATION
The BIG V4 is a high-current compressor and must only be operated with the vehicle’s engine running and the battery being actively charged by the vehicle alternator.

DO NOT operate the compressor from a stand-alone battery that is not being charged. Doing so may cause excessive voltage drop, damage to the compressor or electrical components, and may void the warranty.

24V VEHICLES:The vehicle engine must also remain running while operating the BIG V4 through the supplied 24V to 13.8V DC/DC converter.

WHAT'S INCLUDED

• 1 × Sherpa 4x4 BIG V4 400L/min Compressor
• 1 × Heavy-Duty Compressor Carry Bag
• 4 × 7m Air Hoses
• 4 × Non-Return Valve / Tyre Inflation Adaptors
• 2 × Air Hose Splitters
• 1 × Heavy-Duty 120A Battery Connection Cable
• Heavy-Duty 5AWG Compressor Power Leads with Heavy Duty Alligator Clamps &120A Anderson-Style Power Connections
• 125A Inline Fuse 
• 24V to 13.8V DC/DC Converter and Battery Connection Leads – 24V version