BMC Urbanchallenge UC01 / Alpenchallenge AC01 (Gen 1, alloy) geometry
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Size M
Render
Align
Geometry
| Size | XS | S | M | L | XL |
|---|---|---|---|---|---|
| Stack mm | 534 | 548 | 567 | 587 | 605 |
| Reach mm | 387 | 402 | 401 | 416 | 418 |
| Head tube angle ° | 71.0 | 71.0 | 71.0 | 71.0 | 71.0 |
| Seat tube angle ° | 73.0 | 73.0 | 72.5 | 72.5 | 72.0 |
| Head tube length mm | 135 | 150 | 170 | 190 | 210 |
| Seat tube mm | 410 | 460 | 510 | 560 | 610 |
| Chainstay mm | 436 | 436 | 436 | 436 | 436 |
| BB drop mm | 50 | 50 | 50 | 50 | 50 |
| Stack to reach | 1.38 | 1.36 | 1.41 | 1.41 | 1.45 |
| Effective top tube mmi | 550 | 570 | 580 | 601 | 615 |
SizeMkey specs
Stack-to-reach (size M)1.41More aggressive (lower and longer) than 82% of flat-bar frames in the database at comparable sizes.
Closest geometry matches (size M)
Matched by stack, reach and head tube angle.
More from BMC
Nearest size to the Urbanchallenge UC01 / Alpenchallenge AC01 M.