One of the best parts about this recipe is that you can prep the majority of it up to a day ahead of time and toss it all together the day you serve it.
Add the frozen udon to a large bowl filled with warm water, separating the noodles. Drain and set aside in a large bowl.
In a small bowl, whisk together the sesame oil, vegetable oil, soy sauce, red pepper flakes and sriracha together. Pour over the udon noodles and toss to combine.
Add the crabmeat, edamame, green onions, cucumber, cilantro, avocado, radish and sesame seeds, tossing to combine.