Start With the Rider, Not the Size Label
Frame size is the starting point, not the entire fit. Your height, proportions, flexibility, riding style and preferred position all influence the final setup.
What We Need
Send us your height and inseam, plus information about your current bike and how it fits. Saddle height, saddle-to-bar relationship, stem length and any fit concerns help us make a more precise recommendation.
What Happens Next
We'll use the geometry of your chosen Cobalt to recommend a frame size and starting cockpit setup. If you already have a professional bike fit, send those measurements before the build is finalized so we can use them as the starting point.
Measure consistently
Height and inseam
Measure barefoot on a level floor. For inseam, hold a book firmly and level between your legs, then measure from the floor to its upper edge. Repeat the measurement with a helper.
Current bike and professional fit
Share your current frame size, saddle height measured from the bottom bracket center to the saddle top, stem length, handlebar width, and what you would like to change. A professional fit report provides a useful starting point.
Stack and reach
Stack is the vertical distance from the bottom bracket to the top-center of the head tube; reach is the horizontal distance between those points. They describe frame proportions, while saddle and cockpit choices complete the position.
This is a measurement guide, not a universal height-to-frame-size chart. Compare all six geometry charts, then send your measurements to Cobalt.