BMC Roadmachine Four 2021
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Geometry
| 47 | 51 | 54 | 56 | 58 | 61 | |
|---|---|---|---|---|---|---|
| Add to Compare | ||||||
| Reach | 327 | 400 | 342 | 338 | 422 | 429 |
| Stack | 414 | 441 | 640 | 545 | 588 | 728 |
| Top Tube (effective) | 450 | 435 | 436 | 464 | 476 | 697 |
| Seat Tube C-T | 423 | 368 | 472 | 552 | 501 | 656 |
| Head Angle | 77 | 81 | 82 | 70 | 83 | 81 |
| Seat Angle | 63 | 63 | 77 | 84 | 84 | 83 |
| Head Tube | 104 | 119 | 145 | 144 | 179 | 234 |
| Chainstay | 449 | 342 | 348 | 426 | 404 | 432 |
| Wheelbase | 1122 | 950 | 897 | 1201 | 1057 | 902 |
| Front Centre | 553 | 528 | 558 | 557 | 670 | 595 |
| BB Drop | 74 | 76 | 71 | 75 | 69 | 70 |
| Fork Rake / Offset | 57 | 55 | 43 | 36 | 48 | 50 |
| Trail | 55 | 70 | 50 | 57 | 70 | 66 |
| Fork Length (A2C) | 363 | 324 | 356 | 433 | 394 | 371 |
| Tyre Max Width | 460 | 388 | 407 | 354 | 371 | 456 |
| Seatpost Length | 326 | 389 | 421 | 416 | 396 | 504 |
| Seatpost Offset | 12 | 12 | 12 | 15 | 13 | 12 |
| Stem Length | 77 | 78 | 83 | 113 | 130 | 106 |
| Stem Angle | ±8 | ±8 | ±8 | ±8 | ±8 | ±8 |
| Crank Length | 192 | 201 | 177 | 180 | 198 | 178 |
| Rider Height | <166 | 166-174 | 172-180 | 178-186 | 184-192 | >190 |
| HB Drop | 132 | 140 | 137 | 101 | 102 | 133 |
| HB Reach | 69 | 75 | 57 | 78 | 73 | 80 |
| 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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