Road endurance
Surly Preamble Drop Bar (650b sizes)
2026 · 650b wheels · 2 sizes
Steel drop-bar utility and pavement bike built from double-butted chromoly, with room for 41 mm tyres and mudguards. Surly fits the two smallest sizes with 650b wheels, a 380 mm fork and 47 mm offset, while the Medium to X-Large sizes use 700c wheels. The flat-bar Preamble shares this frame geometry. Build figures are for the stock drop-bar complete bike.
Source: surlybikes.com/products/preamble-drop-bar-red-hot-cheddar
Size run
Published geometry by size. How each size rides and fits for your rider profile loads with the page.
| Size | XS | S |
|---|---|---|
| Stack (mm) | 517 | 535 |
| Reach (mm) | 352 | 381 |
| Head angle (°) | 70.0 | 71.0 |
| Seat angle (°) | 74.0 | 73.0 |