ARB Brushless Twin Compressor Review: Worth $1,265?

Updated 2026-08-21 Researched, not tested in person

Quick answer

Buy the CKBLTP12 if you air down a heavy vehicle on 35s regularly, run air lockers, or inflate for a group, because duty cycle and flow are what you are paying for. Skip it if you air down a couple of times a year, where a good portable compressor at a fifth of the price does the same job more slowly.

9.18 CFM at zero pressure and a 100% duty cycle, which is the specification that actually matters.

Best for heavy tyres and lockers

ARB CKBLTP12 12V Brushless Portable Twin Motor Air Compressor

~$1,265

A twin brushless 12V compressor with a 100% duty cycle, active cooling, electronic speed control and IP67 sealing, supplied with a 20 ft hose.

Check price on Amazon

Specifications

Air flow	9.18 CFM at 0 psi, 6.20 CFM at 29 psi
Max pressure	150 psi
Duty cycle	100%
Current draw	Max 90 A at 12V
Sealing	IP67 water resistant
Weight and size	15.8 lb, 6.69 in high by 13.31 in wide by 14.49 in long
Supplied	20 ft air hose, tyre chuck and blow gun
Motor	Brushless, quoted at 50% more output than the brushed ARB compressor

Specifications above come from ARB's published technical specifications. Treat pricing as approximate, since Amazon pricing moves.

What it does well

A 100% duty cycle means it does not need to stop and cool, which is the actual difference between a compressor for one vehicle and a compressor for a group.
9.18 CFM free air is genuinely fast, and on 35 inch tyres the time saved per airing-up session is measured in many minutes.
Brushless motors have fewer wearing parts, which is a real reliability argument rather than a marketing one.
IP67 sealing and active cooling mean it survives being mounted where a compressor actually lives, which is somewhere wet and hot.
Electronic speed control and voltage protection guard both the compressor and the vehicle's electrical system.

Where it falls short

It draws up to 90 A. That is not a cigarette-lighter accessory: it needs a properly sized, properly fused feed straight from the battery.
The price is close to five times a competent portable compressor, and the extra buys speed and duty cycle rather than a different outcome.
It is a permanent installation to get the best from it, which means a mounting location, a wiring run and a switch.
15.8 lb of compressor plus mounting hardware is weight you carry all the time, for a job you do occasionally.
If you do not run lockers and do not air down often, most of what you are buying will sit idle.

What owners report

Reports on ARB compressors have been consistently strong for a long time, and the brushless generation is judged mainly on speed and heat. The recurring theme in owner feedback across all onboard compressors is that duty cycle is what separates a tool from a toy: cheap compressors do the job and then need to cool down, which is fine for one vehicle and painful for four. Our onboard air versus a portable compressor comparison sets out exactly where that line falls.

The second theme is the pairing. A fast compressor without a fast deflator saves you half the time you could save, because airing down manually is the slow half. That is the point of our rapid deflator versus tyre gauge comparison.

Third, installation. A 90 A load needs cable sized for the run length and current, and correct fusing at the battery end. Get the gauge from the wire gauge calculator rather than guessing, and if you are not confident specifying and terminating a feed of that size, have an auto electrician do it. Undersized cable on a high current load is a fire risk, not an inconvenience.

Who it suits

Anyone running air lockers, which need a compressor with real duty cycle.
Owners of heavy vehicles on large tyres who air down often.
People who travel in groups and end up inflating everyone's tyres.

Who should skip it

Occasional users, who are better served by a good portable unit for a fraction of the price.
Anyone unwilling to run a properly fused high current feed.
Weight-conscious builds that do not need lockers.

Alternatives worth considering

Different Problem

EF ECOFLOW DELTA Pro 3 Portable Power Station, 4096Wh, 4000W

~$2,800

If you are choosing between air and power, most builds run out of electricity long before they run out of compressed air.

Check price on Amazon

Better First Buy

Baja Designs Squadron 2.0 Pro LED Light Pod Pair

~$500

For most builds, seeing at night improves more trips than inflating faster does, and it costs a third as much.

Check price on Amazon

Comfort Pick

MAXXAIR Maxxfan Deluxe Vent, Fan and Vent Cover

~$420

If the vehicle is slept in, ventilation changes every night rather than a few minutes at the end of a trail.

Check price on Amazon

Keep reading

This review draws on published specifications, manufacturer figures and the consensus of verified owner reviews. We have not tested this product ourselves, and we say so rather than implying otherwise. As an Amazon Associate we earn from qualifying purchases.

Frequently asked questions

Is the ARB brushless twin compressor worth it?

If you run lockers or air down large tyres regularly, yes, because 100% duty cycle and 9.18 CFM are the specifications that decide how long you stand at the roadside. If you air down twice a year, a portable compressor at a fifth of the price does the same job more slowly.

Onboard air or a portable compressor?

Onboard air is faster, always with you and wired in. A portable unit is cheaper, moves between vehicles and needs no installation. The deciding factors are how often you inflate and whether you need air for anything other than tyres.

How do I wire a 90 A compressor?

From the battery, with cable sized for the current and the run length, and with a fuse or breaker rated for the cable at the battery end. Work out the gauge properly rather than guessing, and if that is not your area, have an auto electrician do the feed.

What pressure should I air down to?

It depends on tyre construction, vehicle weight and surface, and the right answer for someone else's rig is not yours. Air down gradually, check how the vehicle feels, and remember that low pressures increase the risk of unseating a bead on hard steering inputs.

Do I need a twin compressor?

Only if you need the flow. A single brushless unit inflates one vehicle perfectly well. Twin motors matter when you are running lockers with frequent actuation, filling for a group, or inflating very large tyres repeatedly.

Electrical safety: 12V is low voltage but not low energy. A lithium house battery can push several hundred amps into a short circuit, and undersized or unfused cable is one of the most common causes of vehicle fires in DIY builds. Every circuit must be fused at the source of power, within a few inches of the battery terminal, at or below the ampacity of the smallest conductor it protects. Size cable for voltage drop as well as ampacity, torque terminals to specification, and have a lithium installation inspected by a qualified installer before it carries load. The figures on this page are researched guidance, not a substitute for ABYC E-11 or your component manufacturer's installation manual.

How we choose: we compare published manufacturer specifications, standards documents including ABYC E-11, and verified owner reviews. We do not test gear in person. Vehicle payload, roof load and charging limits vary by model and year, so confirm yours against the door jamb sticker and the owner's manual rather than any number published here.

Totalling your own build weight against your payload? The Overland Build & Power Planner is the paid version of these pages: 8 printable worksheets you fill in with your own numbers, plus the full PDF, $29.