I've never seen a spreader made for bike frames. The one I pictured I made in just a few minutes because I needed it quickly. It's a little rough but works well. It is made from a 1/4" turnbuckle with the right and left hand threaded eye bolts modified to fit around a frame tube. Guess I should put a patent on it, huh.
Age and Treachery Will Always Triumph
Over Youth and Skill & "Charlie Don't Ride"