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Genius - Genius tubing was first introduced in 1991. Made from Nivacrom steel, Genius tubing was the first of the Columbus tube sets to introduce "mega oversized" tubes. Genius tubing saves weight by only butting portions of the tube that are under the greatest stress. Using Genius tubing, we select from 3 different sets to accommodate small, medium and large riders. Genius tubing can be constructed using lugged or luggless techniques. Columbus offers special Genius lugs to match this tube set. Genius tubing makes for an excellent road or track bike. Please click on the tube decal to see our standard set.