BMC Roadmachine Four 2021
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Geometry
| 47 | 51 | 54 | 56 | 58 | 61 | |
|---|---|---|---|---|---|---|
| Add to Compare | ||||||
| Reach | 424 | 434 | 435 | 344 | 469 | 380 |
| Stack | 559 | 594 | 488 | 648 | 653 | 655 |
| Top Tube (effective) | 497 | 472 | 545 | 579 | 495 | 643 |
| Seat Tube C-T | 421 | 376 | 587 | 576 | 599 | 649 |
| Head Angle | 68 | 64 | 74 | 78 | 69 | 71 |
| Seat Angle | 79 | 64 | 73 | 71 | 83 | 79 |
| Head Tube | 92 | 159 | 145 | 208 | 197 | 285 |
| Chainstay | 438 | 481 | 427 | 448 | 436 | 370 |
| Wheelbase | 956 | 810 | 1075 | 903 | 1134 | 908 |
| Front Centre | 664 | 522 | 526 | 716 | 608 | 587 |
| BB Drop | 83 | 58 | 58 | 76 | 58 | 82 |
| Fork Rake / Offset | 49 | 52 | 44 | 52 | 51 | 37 |
| Trail | 62 | 55 | 72 | 60 | 75 | 65 |
| Fork Length (A2C) | 362 | 315 | 382 | 389 | 405 | 378 |
| Tyre Max Width | 358 | 348 | 400 | 410 | 360 | 419 |
| Seatpost Length | 291 | 322 | 450 | 436 | 354 | 424 |
| Seatpost Offset | 17 | 17 | 14 | 15 | 17 | 14 |
| Stem Length | 85 | 102 | 100 | 88 | 121 | 98 |
| Stem Angle | ±8 | ±8 | ±8 | ±8 | ±8 | ±8 |
| Crank Length | 153 | 173 | 138 | 143 | 199 | 175 |
| Rider Height | <166 | 166-174 | 172-180 | 178-186 | 184-192 | >190 |
| HB Drop | 121 | 148 | 140 | 120 | 146 | 145 |
| HB Reach | 60 | 82 | 64 | 58 | 79 | 56 |
| Data Source | Manufacturer | Manufacturer | Manufacturer | Manufacturer | Manufacturer | Manufacturer |
Standard measurements are in millimeters and degrees. The site attempts to recognize and convert other units back to standard - results may vary.
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There is a Tailored Protection™ kit available for this bike.
