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BMC Roadmachine Four 2021


c

Geometry

  47 51 54 56 58 61
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Reach 343 424 412 442 455 394
Stack 477 455 465 622 602 661
Top Tube (effective) 429 614 497 470 513 487
Seat Tube C-T 499 443 485 466 536 685
Head Angle 61 83 84 85 81 67
Seat Angle 64 67 88 66 76 59
Head Tube 131 153 151 167 220 229
Chainstay 413 418 427 491 392 473
Wheelbase 877 1005 803 1177 1209 1043
Front Centre 500 681 480 578 552 751
BB Drop 69 64 83 66 65 69
Fork Rake / Offset 58 55 48 49 53 36
Trail 72 71 52 75 67 58
Fork Length (A2C) 363 302 303 381 301 341
Tyre Max Width 407 372 489 453 459 449
Seatpost Length 368 426 391 389 435 436
Seatpost Offset 17 14 13 16 17 12
Stem Length 73 78 111 127 90 140
Stem Angle ±8 ±8 ±8 ±8 ±8 ±8
Crank Length 172 192 181 158 159 140
Rider Height <166 166-174 172-180 178-186 184-192 >190
HB Drop 140 120 103 120 147 145
HB Reach 71 65 59 66 82 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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