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Columbus SL Niobium is a re-edition of the legendary SL tube set.
The top tube has a standard diameter of 25.4 mm, while the down tube and seat tube have a diameter of 28.6 mm.
Steel was first used in the construction of top-of-the-range frames due to its superior mechanical characteristics, including excellent fatigue resistance and a breaking load second only to advanced composite materials.
Columbus research has always focused on the customization and development of materials optimized for cycling, achieving results of international importance.
Columbus history includes the creation of steels with patented formulations, such as the famous Nivacrom.
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