BMC Alpenchallenge AL geometry
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Size S
Render
Align
Geometry
| Size | S | M | L | XL |
|---|---|---|---|---|
| Stack mm | 560 | 590 | 620 | 650 |
| Reach mm | 400 | 415 | 425 | 440 |
| Head tube angle ° | 70.0 | 70.0 | 70.0 | 70.0 |
| Seat tube angle ° | 74.0 | 74.0 | 74.0 | 74.0 |
| Head tube length mm | 133 | 165 | 197 | 229 |
| Seat tube mm | 480 | 510 | 540 | 555 |
| Chainstay mm | 440 | 440 | 440 | 440 |
| BB drop mm | 67 | 67 | 67 | 67 |
| Fork rake mm | 45 | 45 | 45 | 45 |
| Stack to reach | 1.40 | 1.42 | 1.46 | 1.48 |
| Effective top tube mmi | 561 | 584 | 603 | 626 |
| Wheelbase mmi | 1062 | 1088 | 1109 | 1135 |
SizeSkey specs
Stack-to-reach (size S)1.40More aggressive (lower and longer) than 87% of flat-bar frames in the database at comparable sizes.
Closest geometry matches (size S)
Matched by stack, reach and head tube angle.
Specialized Sirrus Xstep-through, 2022–25S · 563 / 400Specialized Sirrus Step-Through2021–23; Sirrus 2.0 Step-Through, 2021–23S · 563 / 400Focus Arriba DiscTiagra / Apex, 201657 · 564.5 / 400Focus PlanetLite / Pro, 201642 · 560 / 395Focus Urban TR / Planet TR201342 · 560 / 395Rivendell Platypus202650 · 560 / 404
More from BMC
Nearest size to the Alpenchallenge AL S.