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BMC Roadmachine Four 2021


c

Geometry

  47 51 54 56 58 61
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Reach 422 339 446 355 362 464
Stack 505 440 505 675 562 701
Top Tube (effective) 462 456 628 604 674 618
Seat Tube C-T 475 496 459 560 475 682
Head Angle 81 83 70 76 79 84
Seat Angle 67 78 88 64 82 87
Head Tube 118 153 171 152 215 202
Chainstay 363 365 427 490 382 459
Wheelbase 1050 1057 1157 890 984 895
Front Centre 650 646 588 640 704 627
BB Drop 69 81 84 83 70 82
Fork Rake / Offset 51 44 51 45 44 50
Trail 57 54 72 75 60 70
Fork Length (A2C) 359 369 359 360 327 442
Tyre Max Width 397 387 431 411 430 523
Seatpost Length 376 450 363 414 321 350
Seatpost Offset 15 13 14 12 17 17
Stem Length 107 77 93 130 122 100
Stem Angle ±8 ±8 ±8 ±8 ±8 ±8
Crank Length 138 154 177 142 186 190
Rider Height <166 166-174 172-180 178-186 184-192 >190
HB Drop 123 120 114 125 112 141
HB Reach 76 82 68 83 69 61
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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