Aug 2, 2022 11:00:20 PM Lennard Zinn Share: facebook-f icon linkedin-in icon Twitter icon pinterest-p icon envelope icon There's far from a consensus when it comes to sitting on top tubes. Read the full article at Zinn technical FAQ: Sitting on carbon top tube, through-axle security, hill gradients on VeloNews.com. velonews, ask lennard zinn, technical q&a, technical faq, lennard zinn