Frame Fit

Your fit targets vs. frame geometries — with spacer and stem correction.

✛︎ Target geometry

Target stack

mm

Target reach

mm

The frame target from your fitter. The crosshair in the chart.

▤︎ Tolerance & budget active

Simulates how close each frame gets to your target with spacers + stem, then grades the rest with a traffic light. Works at frame level — not at the handlebar.

Explained in detail

Budget explanation
Tolerance explanation
Hands explanation
Off explanation

Tolerance reach

±mm

Tolerance stack

±mm

Spacer allowance (max)

mm

Stem min

mm

Stem max

mm

How much cockpit correction is realistic. Sets the traffic light after compensation. Stem 70–150 mm.

Off — spacers/stem virtually 0. Frames are compared raw by stack/reach; the "Distance" column shows √(ΔStack²+ΔReach²), the nearest frame is highlighted ★︎.

Stack & Reach

fits borderline tough ✛︎Target Correction vectors

Frame comparison

Cells are editable · order stays until you press “Sort by fit”

Frame	Stack	Reach	ΔStack	ΔReach	STR	Cockpit correction	Fit

◎︎ From database Size · stack/reach in mm · geometry per manufacturer

Assumptions

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Note: This tool is no substitute for a bike fitter. It helps compare frame geometries systematically against your measured target values. All data stays local in this browser.