With the multitude of standards on bikes these days, the “need to know” info on any Black Mountain Cycles frame is simple, proven, and reliable.

 

Size Seat Tube C-T Head Angle Seat Angle Top Tube (Effective) Chain Stay BB Drop Head Tube Fork Offset Fork Length Stack Reach
52 520 72° 74° 525 425 75 120 50 375 534 368
54 540 72.5° 73.5° 540 425 75 140 50 375 564 372
56 560 73° 73° 560 425 75 155 48 375 581 382
58 580 73° 73° 575 428 73 170 48 375 593 394
60 600 73° 73° 590 428 73 180 48 375 603 406
62 620 73° 72.5° 605 428 73 200 48 375 622 409