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With options tailored to your needs, ensure smooth, powerful performance, whether you're inflating or deflating tyres. Don't miss out on this essential tool for your next adventure!
400LPM | Pre-Set Pressure Control | 12V & 24V Options
Two 37" tyres. From 9 to 38 PSI. In under 4 minutes.
The Sherpa 4x4 ‘BIG V4’ is the next evolution in high-performance portable air compressors. Built tough for off-roaders, tourers and adventurers who demand serious inflation power, it delivers an impressive 400LPM free air delivery for fast tyre inflation and general off-road use.
Featuring an intelligent pre-set pressure control system, simply set your desired pressure and let the compressor do the rest. Whether you're airing up after a day on the tracks, adjusting pressures for towing or getting ready for the highway, the ‘BIG V4’ makes tyre inflation fast and easy.
Supplied in a rugged heavy-duty carry bag, the ‘BIG V4’ comes as a complete, ready-to-use kit with upgraded 2.2m 5AWG power cables, 120A Anderson-style connectors, a 125A inline fuse and twin 7m rubber air hoses. With exceptional reach and heavy-duty components throughout, it’s built for reliable performance wherever your adventures take you.
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 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 associated electrical components, and may void the warranty.
When serious inflation performance matters, the Sherpa 4x4 ‘BIG V4’ delivers.
Rated at an impressive 400LPM free air delivery, this four-cylinder powerhouse combines high-volume airflow with a heavy-duty electrical system and robust construction to deliver outstanding real-world tyre inflation performance.
As pressure inside a tyre increases, compressor airflow naturally decreases. However, the ‘BIG V4’ continues to deliver impressive inflation speeds under pressure.
In testing, the ‘BIG V4’ achieved:
These results make the ‘BIG V4’ an exceptionally fast portable inflation solution for 4WD touring, off-road use, towing and larger tyre applications.
Operation is simple. Connect the compressor to the vehicle's power supply, attach the air hose, set your desired pressure and start inflation. The pre-set pressure control system takes care of the rest, reducing the need to continually stop and manually check tyre pressure.
Whether you're airing up after tackling soft sand, rocky tracks or remote trails, the ‘BIG V4’ helps get your tyres back to road pressure and gets you moving again quickly.
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.
Built to handle demanding Australian conditions, the ‘BIG V4’ uses heavy-duty components and materials throughout. From the precision-machined cylinders to the oversized cooling fans and heat-dissipating cooling fins, the compressor has been engineered to move large volumes of air while effectively managing operating temperatures.
The high-current electrical system is supported by robust internal wiring and upgraded 5AWG power cables, helping minimise voltage drop and deliver reliable power to the compressor.
The result is a genuine heavy-duty portable compressor designed for repeated use by 4WDers, tourers and adventurers who need serious inflation performance when they're away from home.
Despite its impressive output, the ‘BIG V4’ remains a practical portable solution.
The compressor, power leads, hoses and accessories pack neatly inside the supplied heavy-duty carry bag, helping keep everything together and protected from dust, dirt and moisture during transport and storage.
Twin 7m rubber air hoses provide excellent reach around large 4WDs, trucks, caravans and trailers, while Nitto-style quick-connect fittings make setup and pack-down fast and hassle-free.
With massive airflow, pre-set pressure control, extended hose reach and heavy-duty construction, the Sherpa 4x4 ‘BIG V4’ is built to make airing up faster and easier – so you can spend less time waiting beside your tyres and more time getting on with the adventure.
| Model | 'BIG V4' (SAC12VHDV4) | 'BIG V4 - 24V' (SAC24VHDV4) |
|---|---|---|
|
Maximum Air Flow |
400LPM (Litres per min) / 14CFM (Cubic Ft per min). |
400LPM (Litres per min) / 14CFM (Cubic Ft per min). |
|
Recommended Operating Pressure |
0-150 PSI |
0-150 PSI |
|
Inflation Speed |
37" tyre from 9 to 38 PSI in just over 2 minutes 30 seconds, or two 37" tyres simultaneously in under 4 minutes. |
37" tyre from 9 to 38 PSI in just over 2 minutes 30 seconds, or two 37" tyres simultaneously in under 4 minutes. |
|
Pre-Set Pressure Setting Range |
3-150 PSI |
3-150 PSI |
|
Protection |
Over-pressure & Thermal overload |
Over-pressure & Thermal overload |
|
Cylinders |
V4 - 4x 50mm |
V4 - 4x 50mm |
|
Motor Voltage |
12V
|
24V |
|
Power Rating |
1200W |
1200W |
|
Max. Power Draw |
100A |
100A |
|
Inline Fuse |
125A |
125A |
|
Duty Cycle |
Up to 3 hours at 40 PSI with thermal overload* |
Up to 3 hours at 40 PSI with thermal overload* |
|
Optimum Working Temperature |
-20°C to +50°C (–4 °F to +122 °F) |
-20°C to +50°C (–4 °F to +122 °F) |
|
Power Cables |
Heavy Duty 5AWG - 2.2m with 120amp Anderson style plugs |
Heavy Duty 5AWG - 2.2m with 120amp Anderson style plugs |
|
Power Connection |
Heavy duty alligator clamps |
Heavy duty alligator clamps |
|
Hoses |
2x 7m Rubber hoses with Nitto style connections |
2x 7m Rubber hoses with Nitto style connections |
|
Compressor Outlets |
2x Quick connect Nitto style |
2x Quick connect Nitto style |
|
Accessories |
Heavy-duty carry bag, inflation nozzles & ball needles |
Heavy-duty carry bag, inflation nozzles & ball needles |
|
Weight |
13.6kg (30lb) |
Compressor - 13.6kg (30lb) DC Converter - 3.3kg (7.28lb) |
|
Dimensions |
48.5 x 31.5 x 35cm (19.1" x 12.4" x 13.8") |
Compressor - 48.5 x 31.5 x 35cm (19.1" x 12.4" x 13.8") DC Converter - 30.3 x 12.7 x 6.3cm (12" x 5" x 2.5") |
|
Warranty |
24 months |
24 months |
*Duty cycle is dependent on environmental conditions (temperature).

Inflates a 37" tyre from 9–38 PSI in just over 2 minutes 30 seconds, or two 37" tyres simultaneously in under 4 minutes.
Also a 215/60R16 tyre from 0 to 35 PSI in under 50 seconds.