BMC Roadmachine Four 2021
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Geometry
| 47 | 51 | 54 | 56 | 58 | 61 | |
|---|---|---|---|---|---|---|
| Add to Compare | ||||||
| Reach | 328 | 368 | 342 | 443 | 370 | 408 |
| Stack | 502 | 569 | 648 | 485 | 603 | 628 |
| Top Tube (effective) | 614 | 558 | 625 | 509 | 629 | 565 |
| Seat Tube C-T | 468 | 370 | 586 | 485 | 584 | 659 |
| Head Angle | 61 | 76 | 62 | 71 | 58 | 76 |
| Seat Angle | 65 | 64 | 75 | 86 | 82 | 82 |
| Head Tube | 110 | 152 | 166 | 210 | 221 | 236 |
| Chainstay | 428 | 436 | 348 | 414 | 369 | 426 |
| Wheelbase | 1051 | 1123 | 919 | 980 | 1073 | 920 |
| Front Centre | 575 | 543 | 653 | 582 | 585 | 658 |
| BB Drop | 84 | 57 | 57 | 70 | 63 | 82 |
| Fork Rake / Offset | 45 | 45 | 48 | 43 | 46 | 45 |
| Trail | 52 | 66 | 59 | 66 | 51 | 59 |
| Fork Length (A2C) | 447 | 355 | 347 | 369 | 350 | 348 |
| Tyre Max Width | 418 | 489 | 381 | 389 | 415 | 429 |
| Seatpost Length | 276 | 331 | 335 | 307 | 312 | 384 |
| Seatpost Offset | 12 | 15 | 12 | 14 | 12 | 12 |
| Stem Length | 86 | 105 | 105 | 119 | 91 | 130 |
| Stem Angle | ±8 | ±8 | ±8 | ±8 | ±8 | ±8 |
| Crank Length | 183 | 180 | 184 | 190 | 174 | 152 |
| Rider Height | <166 | 166-174 | 172-180 | 178-186 | 184-192 | >190 |
| HB Drop | 100 | 129 | 123 | 101 | 134 | 108 |
| HB Reach | 66 | 83 | 65 | 76 | 80 | 60 |
| 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.
