Smittybilt 2781 Air Compressor
#3 in Heavy dutyFull review
For off-roaders who air down and want fast refills on big tires without paying ARB prices. Drivers who only top up car tires should get something smaller.
Smittybilt $229.99$229.99
The Smittybilt 2781 Air Compressor is the better tire inflator overall, rated 3.8 to 3.1. The Smittybilt 2781 Air Compressor leads on airflow. The Smittybilt 2781 Air Compressor costs $22.05 less ($229.99 vs $252.04).
VIAIR 400P EF
#7 in Heavy dutyFull review
For off-roaders on 33 to 35 in tires who air down regularly and want quicker, longer runs than a 300P without paying for a twin. It is the sweet spot of VIAIR’s portable line.
Amazon $252.04$252.04
Prices were last checked October 22, 2026 and are subject to change; the price and availability shown by the retailer at the time of purchase apply.
Which should you buy?
- Choose the Smittybilt 2781 Air Compressor for airflow (160 L/min (maker) vs 73 L/min (maker)).
Scores side by side
Each factor is scored 0-100 against the same fixed reference points for every heavy duty tire inflator; a clear win is highlighted. How we rank explains each one.
| Factor weight | Smittybilt 2781 Air Compressor | VIAIR 400P EF |
|---|---|---|
| Overall rating | 3.8/5 | 3.1/5 |
| Value 35% | 64 $229.99 | 59 $252.04 |
| Airflow 30% | 100 160 L/min (maker) | 41 73 L/min (maker) |
| Features 20% | 60 runs 40 min at a time, 150 PSI max; no auto shutoff | 60 runs 60 min at a time, 150 PSI max; no auto shutoff |
| Warranty 15% | 0 1-year warranty | 0 1-year warranty |
Specifications
| Smittybilt 2781 Air Compressor | VIAIR 400P EF | |
|---|---|---|
| Inflating | ||
| Max pressure | 150 PSI | 150 PSI |
| Airflow (maker) | 160 L/min | 73 L/min |
| Auto shutoff | No | No |
| Duty cycle | 40 min on | 60 min on |
| Noise | - | 73 dB |
| Power | ||
| Power | Battery clamps | Battery clamps |
| Power bank | No | No |
| Power cord | 10 ft | 6 ft |
| Build | ||
| Air hose | 288 in | 300 in |
| Light | No | No |
| Dimensions | - | 10.9 x 5.8 x 7.4 in |
| Weight | 21 lb | 10.3 lb |
| Warranty | 1 year | 1 year |