BMC Roadmachine Four 2021
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Geometry
| 47 | 51 | 54 | 56 | 58 | 61 | |
|---|---|---|---|---|---|---|
| Add to Compare | ||||||
| Reach | 413 | 344 | 448 | 352 | 372 | 472 |
| Stack | 422 | 623 | 630 | 679 | 604 | 618 |
| Top Tube (effective) | 435 | 599 | 646 | 586 | 463 | 619 |
| Seat Tube C-T | 392 | 377 | 599 | 472 | 440 | 634 |
| Head Angle | 84 | 68 | 76 | 73 | 61 | 73 |
| Seat Angle | 67 | 64 | 63 | 62 | 82 | 78 |
| Head Tube | 113 | 138 | 160 | 165 | 188 | 247 |
| Chainstay | 341 | 483 | 464 | 418 | 370 | 429 |
| Wheelbase | 1161 | 997 | 1024 | 1102 | 916 | 842 |
| Front Centre | 647 | 599 | 536 | 630 | 603 | 517 |
| BB Drop | 71 | 62 | 57 | 70 | 74 | 60 |
| Fork Rake / Offset | 47 | 42 | 36 | 48 | 47 | 48 |
| Trail | 59 | 52 | 72 | 74 | 65 | 63 |
| Fork Length (A2C) | 376 | 325 | 412 | 420 | 363 | 332 |
| Tyre Max Width | 474 | 442 | 460 | 444 | 446 | 508 |
| Seatpost Length | 279 | 372 | 414 | 352 | 412 | 347 |
| Seatpost Offset | 12 | 15 | 15 | 17 | 17 | 14 |
| Stem Length | 72 | 83 | 93 | 101 | 92 | 133 |
| Stem Angle | ±8 | ±8 | ±8 | ±8 | ±8 | ±8 |
| Crank Length | 188 | 198 | 192 | 168 | 154 | 188 |
| Rider Height | <166 | 166-174 | 172-180 | 178-186 | 184-192 | >190 |
| HB Drop | 132 | 145 | 123 | 112 | 118 | 146 |
| HB Reach | 61 | 66 | 59 | 78 | 76 | 57 |
| 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.
