Phase II ARC Trooper Armor was the next iteration of ARC trooper armor, following the Phase I ARC Trooper Armor, and was worn by the Advanced Recon Commandos serving the Galactic Republic. The standard Phase II clone trooper armor utilized by the rank and file clone troopers of the Grand Army of the Republic was based on the field-tested Phase I ARC trooper armor. Once the Army of the Republic transitioned to Phase II after successful trials, ARC troopers were issued armor resembling the standard Phase II clone trooper armor, but with the addition of their specialized gear such as extra plating, pauldrons, kamas, survival kits, and other enhancements.
The armor's inherent modifications, while limiting further customization, improved its overall protective capabilities. A built-in comlink scrambler that could operate on all standard Galactic Republic communication frequencies was a feature of the Phase II ARC trooper armor. Within the survival pack were items like emergency rations, a water purification device, a length of microfiber cord, and a distress beacon.
By the time of the Battle of Umbara, the ARC trooper known as Fives was seen wearing Phase II ARC trooper armor, and Clone Lieutenant Jesse was seen wearing it after his promotion to ARC trooper during the Battle of Anaxes in the Clone Wars.