June 24, 2019

One of the special aspects of a No. 22 build is the care we put into constructing the frame. A unique feature of each build is that we butt each main tube we use on almost all of our frames.

We start off by procuring the finest titanium material, then perform all work on those raw tubes with our own equipment in our Johnstown, N.Y. factory. Butting a tube refers to changing the tube's wall thickness by removing excess material that isn’t needed for strength or performance. Because we do all of our butting in-house, we’ve been able to calculate exactly how much material can (and should) be removed along every millimetre of our main tubes. The result is a highly responsive and incredibly strong build.

Doing our own butting also allows us to spread the stress points away from the welds, making the frame altogether stronger. And while purely dropping weight is by no means the only reason why we do our own butting, we are able to cut away an astonishing amount—up to about 130-150 g per frameset.

We use a Haas CNC lathe for the butting, which is an impressive machine. Our team on the factory floor have been able to experiment in order to discover the ideal weight ratios for all of our models, be it for the Reactor, our performance-oriented road bike, or our highly versatile mixed terrain Drifter design. The Haas’ software is able to produce perfect results each and every time we put a tube through the process, based entirely on our specifications. That’s why we’re able to make such exacting frames, engineered to perform under a wide range of conditions.

We generally start the butting process with tubes with wall thicknesses of less than 1mm, and begin working away areas of unneeded thickness. This custom butting process allows us to increase the tube diameters on our frames for increased stiffness, while reducing weight compared to a straight walled tube. We’re able to nail that nearly impossible balance of producing an extremely lightweight, strong and stiff build.

We’ve all heard the terms “double butted” and “triple butted” used when referring to frame construction, and this is how steel tubes have been marketed for many years. The "double" and "triple" terms refer to the number of changes in the wall thickness of a tube. Our butting process is somewhat more nuanced, and isn’t done in such staggered steps. Because we get to continuously vary the wall thickness wherever we want in the tube, there aren't the distinct notches stepping down the wall thickness that a double- or triple-butted tube would have. This is one of the significant advantages of doing the butting ourselves. Think of our process as “continuously butted,” even though we usually just say "butted" to avoid any confusion.

Our process ultimately produces a smoother ride, with each of our designs able to more subtly embrace road noise and bumps. By doing the butting ourselves, we’re able to maximize titanium’s already extraordinary strength-to-weight-ratio, and continue to evolve our lineup for your specific riding needs. Make sure to check out the above video about the butting process at our factory, as well as the other videos in our series about our entire process.


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2019 Geometry Charts

Great Divide Rim Brake

Size 48cm 50cm 52cm 54cm 56cm 58cm 60cm
Effective top tube length (mm) 495 510 525 545 560 580 600
Seat tube, center-center (mm) 445 462 490 518 540 565 590
Head tube length (mm) 90 100 120 140 160 180 200
Seat tube angle (deg) 75 74.5 74 73.5 73 73 72.5
Head tube angle (deg) 70.5 71.0 71.2 72.2 72.5 73 73
Front center (mm) 567 574 584 586 594 609 623
Chain stay length (mm) 412 412 412 415 415 415 418
BB drop (mm) 78 78 75 75 75 73 73
Reach (mm) 357 364 370 379 383 397 406
Stack (mm) 506 517 534 558 578 597 617
Standover (700x28mm tires) 730 743 767 793 813 836 858

 

Great Divide Disc

Size 48cm 50cm 52cm 54cm 56cm 58cm 60cm
Effective top tube length (mm) 495 510 525 545 560 580 600
Seat tube, center-center (mm) 445 462 490 518 540 565 590
Head tube length (mm) 85 95 115 135 155 175 195
Seat tube angle (deg) 75 74.5 74 73.5 73 73 72.5
Head tube angle (deg) 70.5 71.0 71.2 72.2 72.5 73 73
Front center (mm) 567 574 584 586 594 609 623
Chain stay length (mm) 418 418 418 418 420 420 422
BB drop (mm) 78 78 75 75 75 73 73
Reach (mm) 356 364 369 378 382 397 405
Stack (mm) 508 520 536 560 580 599 619
Standover (700x28mm tires) 731 744 768 794 814 837 858

 

Drifter

Size 48cm 50cm 52cm 54cm 56cm 58cm 60cm
Effective top tube length (mm) 502 510 526 545 560 575 595
Seat tube, center-center (mm) 460 478 503 520 535 552 577
Head tube length (mm) 105 115 130 150 165 185 205
Seat tube angle (deg) 74.5 74 74 73.5 73 73 72.5
Head tube angle (deg) 70.5 70.5 70.8 71 71.2 71.2 71.5
Front center (mm) 572 576 589 603 612 627 640
Chain stay length (mm) 430 430 430 430 432 435 435
BB drop (mm) 73 73 73 72 70 70 70
Reach (mm) 353 353 365 374 379 389 398
Stack (mm) 529 538 553 572 585 604 624
Standover (700x38mm tires) 762 775 795 813 828 845 861

 

Drifter X

Size 48cm 50cm 52cm 54cm 56cm 58cm 60cm
Effective top tube length (mm) 502 511 525 545 560 575 595
Seat tube, center-center (mm) 460 478 502 520 535 552 576
Head tube length (mm) 110 120 135 155 170 190 210
Seat tube angle (deg) 74.5 74 74 73.5 73 73 72.5
Head tube angle (deg) 70.5 70.5 70.8 71 71.2 71.2 71.5
Front center (mm) 571 576 589 603 612 627 640
Chain stay length (mm) 427 427 427 427 430 432 432
BB drop (mm) 73 73 73 72 70 70 70
Reach (mm) 355 356 363 376 382 392 400
Stack (mm) 521 530 546 564 577 596 616
Standover (700x38mm tires) 758 772 790 809 824 842 863

 

Reactor

Size 50cm 52cm 54cm 56cm 58cm 60cm
Effective top tube length (mm) 515 530 545 565 580 595
Seat tube, center-center (mm) 456 475 496 514 545 568
Head tube length (mm) 100 120 140 160 190 210
Seat tube angle (deg) 74.5 74 74 73.2 73 73
Head tube angle (deg) 72 72 72.8 73.2 73.2 73.2
Front center (mm) 571 582 586 595 608 623
Chain stay length (mm) 410 410 412 412 415 415
BB drop (mm) 72 72 72 70 68 68
Reach (mm) 374 379 388 395 400 409
Stack (mm) 503 522 545 564 590 609
Standover (700x25mm tires) 739 757 779 800 829 850

 

Aurora

Size 48cm 50cm 52cm 54cm 56cm 58cm 60cm
Effective top tube length (mm) 495 510 525 545 560 580 600
Seat tube, center-center (mm) 445 462 490 518 540 562 588
Head tube length (mm) 100 110 130 150 170 190 210
Seat tube angle (deg) 75 74.5 74 73.5 73 73 72.5
Head tube angle (deg) 70.5 71 71.2 72.2 72.5 73 73
Front center (mm) 567 574 584 586 594 609 624
Chain stay length (mm) 415 415 415 418 418 418 420
BB drop (mm) 78 78 75 75 75 73 73
Reach (mm) 355 363 369 378 382 396 405
Stack (mm) 510 521 538 562 582 601 620
Standover (700x28mm tires) 731 745 770 795 814 838 859

 

Broken Arrow

Size 48cm 50cm 52cm 54cm 56cm 58cm 60cm
Effective top tube length (mm) 505 510 525 545 560 575 590
Seat tube, center-center (mm) 467 490 510 532 548 567 590
Head tube length (mm) 90 100 120 140 150 160 180
Seat tube angle (deg) 74 74 73.5 73.3 73 72.5 72.5
Head tube angle (deg) 70.8 70.8 71 71 71.3 71.5 72
Front center (mm) 565 571 580 599 609 622 627
Chain stay length (mm) 425 425 425 425 425 425 425
BB drop (mm) 68 68 68 68 66 66 64
Reach (mm) 352 355 359 372 382 393 397
Stack (mm) 524 533 553 572 580 591 610
Standover (700x32mm tires) 763 778 797 817 831 845 866

 

Little Wing

Size 50cm 52cm 54cm 56cm 58cm 60cm
Effective top tube length (mm) 515 525 540 555 575 590
Seat tube, center-center (mm) 477 499 524 552 575 596
Head tube length (mm) 100 120 140 160 180 200
Seat tube angle (deg) 75.5 75 74.5 74.5 74 74
Head tube angle (deg) 72.5 73 73 73.5 74 74
Front center (mm) 566 569 579 590 601 613
Chain stay length (mm) 393 393 393 396 396 396
BB drop (mm) 58 58 58 58 58 58
Reach (mm) 382 383 387 397 407 416
Stack (mm) 506 527 546 567 588 608
Standover (700x23mm tires) 765 785 806 830 851 871

 

Old King

Size Small Medium Large Extra Large
Effective top tube length (mm) 580 605 622 642
Seat tube, center-center (mm) 380 410 445 481
Head tube length (mm) 100 110 120 140
Seat tube angle (deg) 73.5 73.5 73.5 73.3
Head tube angle (deg) 70 70 70 70
Front center (mm) 655 680 698 719
Chain stay length (mm) 435 435 435 435
BB drop (mm) 58 58 58 58
Reach (mm) 401 423 437 451
Stack (mm) 599 609 619 637
Standover (29x2.3" tires) 799 816 838 863