ARB CKMTA12 '12V' On-Board Twin High Performance Air Compr

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Who it fits · inflator

Best for: Daily drivers and roadside top-offs where portability and auto shut-off matter more than CFM.

Skip if: You regularly fill truck, trailer, or RV tires from flat, or you need published high-flow performance.

Arb ARB CKMTA12 '12V' On-Board Twin High Performance Air Compr is catalogued for buyers comparing tire-pressure gear by listing specs, price, and owner themes — not as a PumpGauge lab measurement.

For portable inflators, prioritize duty cycle, hose reach, and power source (12V vs cordless) over headline PSI. Owner notes about heat and battery drain matter more than marketing fill claims.

List pricing around $648 puts it in the serious kit range. Verify what you are paying for against a cheaper single-purpose alternative.

Listing highlight we keep as context (not our measurement): Motors are water sealed, 100% ball bearing equipped (i.e. no bushings), and feature a unique linear brush pre-load system for extra long life, low heat and quiet operation throughout the life of the unit.

Listing highlights (cleaned)

Deduplicated manufacturer/retailer bullets. Promotional gift lines and repeated paste are removed. These are not PumpGauge measurements.

• Motors are water sealed, 100% ball bearing equipped (i.e. no bushings), and feature a unique linear brush pre-load system for extra long life, low heat and quiet operation throughout the life of the unit.
• Compact twin motor, dual cylinder design makes it the highest flowing compressor in its class (voltage vs. size). Highest air flow rate of any 12V compressor of its size on the market at 174LPM [6.16CFM].
• Full wiring loom included for simplified installation and easy plug-in connectivity to Air Locker control solenoids. (Note: Air Locker Manifold Kit #171503 required to mount solenoids).
• Motors are internally thermal protected against extreme temperature damage. Over-pressure safety valve equipped. Equipped with dual heavy duty Maxi-Fuses for professional in-line circuit protection and true circuit redundancy in case of a fault.

What owners report

Themes paraphrased or quoted from public listing reviews. Sample is vendor-selected — not a representative survey.

• “4/5 — This compressor is highly thought of, but I found several issues that I would not expect in a high end product: 1) The housing at the outlet port appears to be made of cast aluminium, and cracked causing a huge air leak. 2) The steel shrou…” — paraphrased from public reviews
• “5/5 — Compressor works great! Not too loud, fills up tires quickly after a day on the trails. Also great peace of mind for road trips combined with having plugs and a repair kit with you. Lots of wiring involved with installation, if you are com…” — paraphrased from public reviews
• “5/5 — Great compressor, fast to fill tires, I can actually inflate the tires faster than my staun deflators can remove the air. I also have mine mounted in the rear of the SUV and have posted a video no youtube to show approx how loud it is in m…” — paraphrased from public reviews
• “5/5 — I don't understand the less than 5 star reviews. This is the best small compressor unit out there; nothing else comes close. It has a fan and a 100% duty cycle. I have mine mounted under the passenger seat of my Jeep and use it primarily t…” — paraphrased from public reviews

Alternatives & next steps

Compare related tools in our guides and compare section, or dial cold-tire PSI with the tire pressure calculator. Corrections: [email protected].