Xem Studiomeasured geometryLibrary › Everyday mounts › Bicycle handlebar diameters: 22.2, 23.8, 25.4, 26.0, 31.8 and 35.0 mm
Handlebar section Ø25.4 (1 in) × 100 long, axis on X
Handlebar section Ø25.4 (1 in) × 100 long, axis on X: the outside of the bar (the wall is not drawn); DXF = the exact Ø25.4 circle
Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.
STEP STL DXF free, CC BY 4.0 (credit "Xem Studio")
Dimensions
| clamp or section Ø (mm) | Ø25.4 |
|---|---|
| inch | 1 in |
| where it is used | the ISO clamp size: most upright bars, older drop bars |
| from | Sheldon Brown, BikeGremlin, Bikepacking.com |
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Bicycle handlebar diameters: 22.2, 23.8, 25.4, 26.0, 31.8 and 35.0 mm: every size, notes, mating features and sources. What diameter is a bike handlebar?