Jay has easily 22'' and Dexter had the same exact size or maybe slightly bigger arms than Jay
There’s a video of Jay and Ronnie measuring after a shoulder and bicep workout and Jay was 22.5” weighing 290 crooked, pumped and a bit loose, Ronnie was 23” more crooked, pumped and loose. Just cause you say things do not make them facts same goes for me,I’m just going by what I’ve seen. Dex had great detail, shape, seperation etc… so appeared bigger than they were also small joints.
Also there is an interview somewhere we’re doz says he had 20” at his biggest pumped.