Decathlon is a French company that started making bicycles in the 1980s. They have long had a presence in the cycling world, and even today they sponsor a pro cycling team. This is one of their high end aluminum hardtail frames dating to approximately 1999. 19" center to top. 17" center to center. 22.75" top tube. This is medium to medium-large. Takes 1-1/8" headset. 135mm rear spacing for 26" wheels.
