BMC Roadmachine Four 2021
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Geometry
| 47 | 51 | 54 | 56 | 58 | 61 | |
|---|---|---|---|---|---|---|
| Add to Compare | ||||||
| Reach | 377 | 372 | 343 | 417 | 338 | 332 |
| Stack | 585 | 627 | 624 | 612 | 727 | 712 |
| Top Tube (effective) | 508 | 458 | 584 | 528 | 617 | 641 |
| Seat Tube C-T | 497 | 376 | 499 | 521 | 562 | 681 |
| Head Angle | 57 | 81 | 67 | 63 | 62 | 80 |
| Seat Angle | 70 | 67 | 79 | 84 | 88 | 87 |
| Head Tube | 124 | 159 | 167 | 203 | 178 | 233 |
| Chainstay | 335 | 427 | 402 | 385 | 446 | 487 |
| Wheelbase | 882 | 1191 | 1121 | 1080 | 1187 | 877 |
| Front Centre | 690 | 565 | 559 | 640 | 601 | 630 |
| BB Drop | 72 | 65 | 69 | 61 | 65 | 68 |
| Fork Rake / Offset | 42 | 57 | 40 | 45 | 50 | 38 |
| Trail | 63 | 61 | 65 | 72 | 73 | 59 |
| Fork Length (A2C) | 347 | 449 | 399 | 368 | 411 | 326 |
| Tyre Max Width | 335 | 472 | 486 | 444 | 492 | 426 |
| Seatpost Length | 394 | 334 | 376 | 312 | 449 | 345 |
| Seatpost Offset | 12 | 12 | 16 | 12 | 16 | 14 |
| Stem Length | 105 | 92 | 107 | 102 | 115 | 126 |
| Stem Angle | ±8 | ±8 | ±8 | ±8 | ±8 | ±8 |
| Crank Length | 145 | 202 | 149 | 177 | 205 | 140 |
| Rider Height | <166 | 166-174 | 172-180 | 178-186 | 184-192 | >190 |
| HB Drop | 147 | 109 | 125 | 124 | 147 | 124 |
| HB Reach | 66 | 56 | 83 | 56 | 57 | 73 |
| Data Source | Manufacturer | Manufacturer | Manufacturer | Manufacturer | Manufacturer | Manufacturer |
Measurements are in millimeters and degrees.
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