BMC Roadmachine Four 2021
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Geometry
| 47 | 51 | 54 | 56 | 58 | 61 | |
|---|---|---|---|---|---|---|
| Add to Compare | ||||||
| Reach | 327 | 366 | 431 | 347 | 364 | 374 |
| Stack | 420 | 552 | 628 | 614 | 639 | 716 |
| Top Tube (effective) | 608 | 499 | 556 | 533 | 681 | 546 |
| Seat Tube C-T | 464 | 458 | 561 | 572 | 456 | 543 |
| Head Angle | 60 | 61 | 73 | 62 | 64 | 80 |
| Seat Angle | 72 | 59 | 65 | 65 | 77 | 78 |
| Head Tube | 123 | 113 | 156 | 204 | 228 | 280 |
| Chainstay | 402 | 388 | 472 | 450 | 350 | 330 |
| Wheelbase | 1153 | 818 | 1126 | 955 | 1133 | 947 |
| Front Centre | 545 | 648 | 582 | 506 | 665 | 680 |
| BB Drop | 67 | 73 | 68 | 82 | 79 | 60 |
| Fork Rake / Offset | 55 | 44 | 51 | 51 | 38 | 46 |
| Trail | 71 | 62 | 61 | 55 | 55 | 64 |
| Fork Length (A2C) | 392 | 446 | 320 | 347 | 373 | 447 |
| Tyre Max Width | 446 | 478 | 415 | 457 | 370 | 526 |
| Seatpost Length | 308 | 454 | 412 | 443 | 455 | 445 |
| Seatpost Offset | 15 | 12 | 15 | 12 | 14 | 17 |
| Stem Length | 84 | 105 | 97 | 115 | 109 | 125 |
| Stem Angle | ±8 | ±8 | ±8 | ±8 | ±8 | ±8 |
| Crank Length | 152 | 173 | 194 | 138 | 186 | 202 |
| Rider Height | <166 | 166-174 | 172-180 | 178-186 | 184-192 | >190 |
| HB Drop | 121 | 148 | 115 | 101 | 131 | 125 |
| HB Reach | 59 | 63 | 71 | 76 | 57 | 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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There is a Tailored Protection™ kit available for this bike.
