Geometry charts are written by engineers for lawyers: sixteen columns of millimeters, most of which answer questions nobody asks. Four numbers do the real work — and our redrawn chart puts them first.
Stack and reach
The only two numbers that transfer between brands without translation. They describe where the front of the bike is relative to your feet — everything else about 'fit' is stem length and spacers negotiating around those two.
Trail, not head angle
Head angle alone is gossip; trail is the number that predicts steering feel. Two bikes with identical head angles and different fork offsets steer like strangers. We print trail in the second column, where spec sheets usually hide it.
Front-center for the rough stuff
On gravel, front-center — bottom bracket to front axle — decides whether washboard descents feel planted or like a coin toss. It's why the GR chart reads long compared to road: that length is the suspension you didn't buy. The full chart is on the ExAero GR RDC Frameset page.
This is a test article — content is illustrative while the store is in staging.
