Personnaly I like the OX better than the ARB. Less to go wrong. When your figuring costs you need to add in the cost of a compressor to run the ARB.
The ARB has so many places it can fail. I have seen blown seals, bolts loosen up. ARB say's this was not a problem but they tell people how to dowl the housing to prevent it and changed a few other things. May not be an issue now as these upgrades should be on all new ARB's. They are very easily damaged by any dirt either comming down the air line or in the oil.
The OX is just plain simple. It has a locking collar that has a fork like a tranny and it simply is slid into place making it a spool. The ARB does the same thing but it uses a very delicate air piston to do the job.
The only vulnerable thing on the OX is the cable but the air line is just as vulnerable on the ARB. It doesn't require a compressor, solonoid valves, wiring and all the failure that can happen with that.Just a simple cable like a bick shifter.
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