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BMC Roadmachine Four 2021


c

Geometry

  47 51 54 56 58 61
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Reach 316 444 361 427 320 445
Stack 569 449 553 642 539 601
Top Tube (effective) 610 636 532 451 548 536
Seat Tube C-T 347 521 517 558 490 533
Head Angle 75 64 70 82 80 79
Seat Angle 76 67 71 86 81 80
Head Tube 97 122 160 178 202 223
Chainstay 468 491 442 347 356 473
Wheelbase 1105 1186 824 922 1058 1167
Front Centre 662 500 541 554 589 733
BB Drop 84 80 60 83 78 65
Fork Rake / Offset 50 41 36 42 50 47
Trail 59 57 65 57 74 66
Fork Length (A2C) 300 395 323 319 375 391
Tyre Max Width 418 479 429 354 385 459
Seatpost Length 348 337 418 425 329 346
Seatpost Offset 14 12 15 14 13 16
Stem Length 90 75 80 108 88 128
Stem Angle ±8 ±8 ±8 ±8 ±8 ±8
Crank Length 151 175 168 186 146 145
Rider Height <166 166-174 172-180 178-186 184-192 >190
HB Drop 140 135 111 133 140 105
HB Reach 71 78 72 56 69 82
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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