Combine shredded crab, cream cheese, mayo, sriracha, and vinegar. Season lightly.
Spread sushi rice on nori sheet over bamboo mat.
Place crab mixture and avocado in center.
Roll with bamboo mat, sealing edges.
Dredge rolls in flour, dip in eggs, then cover with panko.
Bring fryer oil to 350°F.
Fry for 2–3 minutes until golden. Drain on paper towels.
Let rest, then cut into bite-sized pieces.