BMC Roadmachine Four 2021
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Geometry
| 47 | 51 | 54 | 56 | 58 | 61 | |
|---|---|---|---|---|---|---|
| Add to Compare | ||||||
| Reach | 335 | 330 | 419 | 329 | 372 | 445 |
| Stack | 580 | 453 | 645 | 552 | 493 | 592 |
| Top Tube (effective) | 437 | 473 | 495 | 571 | 549 | 501 |
| Seat Tube C-T | 436 | 491 | 580 | 591 | 482 | 545 |
| Head Angle | 58 | 58 | 69 | 74 | 73 | 63 |
| Seat Angle | 82 | 83 | 74 | 68 | 72 | 65 |
| Head Tube | 125 | 115 | 128 | 147 | 187 | 278 |
| Chainstay | 472 | 390 | 424 | 414 | 458 | 369 |
| Wheelbase | 880 | 944 | 806 | 1125 | 1111 | 1159 |
| Front Centre | 506 | 554 | 498 | 612 | 704 | 533 |
| BB Drop | 60 | 73 | 75 | 78 | 61 | 77 |
| Fork Rake / Offset | 55 | 43 | 43 | 38 | 40 | 53 |
| Trail | 52 | 69 | 68 | 64 | 74 | 73 |
| Fork Length (A2C) | 429 | 317 | 338 | 351 | 418 | 329 |
| Tyre Max Width | 402 | 382 | 447 | 422 | 343 | 492 |
| Seatpost Length | 264 | 329 | 406 | 328 | 309 | 472 |
| Seatpost Offset | 13 | 13 | 17 | 14 | 16 | 12 |
| Stem Length | 103 | 92 | 113 | 107 | 95 | 143 |
| Stem Angle | ±8 | ±8 | ±8 | ±8 | ±8 | ±8 |
| Crank Length | 168 | 149 | 161 | 194 | 194 | 149 |
| Rider Height | <166 | 166-174 | 172-180 | 178-186 | 184-192 | >190 |
| HB Drop | 140 | 109 | 107 | 113 | 111 | 122 |
| HB Reach | 69 | 77 | 56 | 63 | 82 | 64 |
| 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.
