Introducing the VentoX adjustable angle clamp, the perfect addition to any time trial bike. Designed with an optimized kammtail airfoil profile to reduces aero drag for maximum speed and efficiency. It can be fully adjusted in 10-30 degrees, with laser engraving degree denominations for precise customization. Compatible with most TT bikes, require a dual riser stack system with a flat top riser stack and bolt centers spacing between 12.5- 40mm