ARB CKMP12 Portable (V2)
#8 in Heavy dutyFull review
For overlanders who value ARB’s durability, case and three-year warranty over raw speed. Buyers chasing airflow per dollar will do better with a VIAIR 400P EF.
Amazon $487$487
The ARB CKMP12 Portable (V2) and the VIAIR 450P-A EF are evenly matched, rated 2.8 and 2.8. The ARB CKMP12 Portable (V2) leads on warranty and airflow. The VIAIR 450P-A EF wins on value and features. The VIAIR 450P-A EF costs $179.40 less ($307.60 vs $487).
VIAIR 450P-A EF
#9 in Heavy dutyFull review
For RV, trailer and big-truck owners who run high pressures or fill many tires in a row and want a compressor that never needs a rest. For fastest fills at trail pressures, the 400P EF is quicker.
Amazon $307.60$307.60
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 ARB CKMP12 Portable (V2) for warranty (3-year warranty vs 1-year warranty) and airflow (75.1 L/min (maker) vs 62 L/min (maker)).
- Choose the VIAIR 450P-A EF for value ($307.60 vs $487) and features (100% duty cycle, 150 PSI max; no auto shutoff vs runs 30 min at a time, 100 PSI max; no auto shutoff).
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 | ARB CKMP12 Portable (V2) | VIAIR 450P-A EF |
|---|---|---|
| Overall rating | 2.8/5 | 2.8/5 |
| Value 35% | 3 $487 | 46 $307.60 |
| Airflow 30% | 44 75.1 L/min (maker) | 28 62 L/min (maker) |
| Features 20% | 43 runs 30 min at a time, 100 PSI max; no auto shutoff | 60 100% duty cycle, 150 PSI max; no auto shutoff |
| Warranty 15% | 100 3-year warranty | 0 1-year warranty |
Specifications
| ARB CKMP12 Portable (V2) | VIAIR 450P-A EF | |
|---|---|---|
| Inflating | ||
| Max pressure | 100 PSI | 150 PSI |
| Airflow (maker) | 75.1 L/min | 62 L/min |
| Auto shutoff | No | No |
| Duty cycle | 30 min on | 100% (continuous) |
| Power | ||
| Power | Battery clamps | Battery clamps |
| Power bank | No | No |
| Power cord | - | 6 ft |
| Build | ||
| Air hose | 276 in | 360 in |
| Light | No | No |
| Dimensions | 14.0 x 12.1 x 7.2 in (case) | 12.4 x 5.8 x 7.4 in |
| Weight | 15.4 lb | 13 lb |
| Warranty | 3 years | 1 year |