ARB Twin Motor 12V On-Board Air Compressor (CKMTA12)
ARB's flagship on-board air — twin motors, 100% duty cycle, and the airflow to fill big tires fast, run lockers, and drive air tools.
Twice the Motors, Twice the Air
The CKMTA12 is ARB's high-output twin-motor on-board compressor — built for serious off-roaders who don't want to wait around at the trailhead. Its dual-motor design delivers 6.16 CFM of airflow and up to 150 PSI, so airing up 35s and 37s takes a fraction of the time of a single-motor unit.
With a 100% duty cycle, it keeps running as long as the job takes — from a full set of tires to activating ARB air lockers or driving air tools when paired with a 4L tank.
See How Fast It Fills
Watch ARB's own demo of the twin compressor in action. When you're re-airing a full set of off-road tires after a day on the trail, that speed adds up — less time compressing, more time driving.
Engineered for the Long Haul
Sealed for moisture and dust resistance (IP55) — waterproof/dustproof for trail conditions
Integrated pressure switch, relays, and a brushless cooling fan keep electronics, motors, and cylinder heads cool
Anodized mounting bracket dissipates heat
Over-pressure safety valve equipped for safe operation
Designed for tire inflation and ARB Air Locker activation (with optional accessories); air-tool capable with a 4L tank
📋 Specifications
Part #: CKMTA12 · Voltage: 12V · Motor: Brushed Twin · Design: Onboard Max PSI: 150 · Max Amps: 68.6 · Air Flow: 6.16 CFM @ 0 PSI / 4.68 CFM @ 29 PSI Duty Cycle: 100% (60/0) · IP Rating: IP55 Dimensions: 10.8"L × 7.5"W × 4"H · Weight: 17.4 lb Warranty: ARB limited warranty · Individually tested at the factory
FAQ
Twin vs single — is the twin worth it? If you run larger tires, air up frequently, or want to drive air tools, the twin's higher output (6.16 vs 3.08 CFM) and 100% duty cycle make a real difference. For basic tire fills and lockers on a lighter build, the single (CKMA12) is plenty.
Can it run air tools? Yes — when paired with an optional 4L air tank, the CKMTA12 is suitable for many air tools.
Is it weather-sealed? Yes — IP55 rated, waterproof and dustproof for off-road use.
Will it run ARB air lockers? Yes — it's designed for Air Locker activation (with the appropriate accessories) alongside tire inflation.
