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Compare Bikes




  Kona Unit X 2020
 		Kona Unit X 2020
 		Surly Ogre 2020
 		Surly Ogre 2020
 		No image available for this bike.
 		No image available for this bike.
 		Brother Big Bro 2021
 		Brother Big Bro 2021
 		On-One Bootzipper 650b 2019
 		On-One Bootzipper 650b 2019
  Kona Unit X
2020: L
Kona Unit X
2020: XL
Surly Ogre
2020: LG
Surly Ogre
2020: XL
Surly Bridge Club
2018: LG
Surly Bridge Club
2018: XL
Brother Big Bro
2021: Large (20)
Brother Big Bro
2021: xLarge (22)
On-One Bootzipper 650b
2019: LRG
On-One Bootzipper 650b
2019: XLG
To view geometry data you must use a web browser that supports JavaScript. See: browser-update.org
Choose Baseline
Reach 426 433 415 481 473 403 367 395 466 424
Stack 526 595 561 696 508 538 734 652 646 662
Top Tube (effective) 564 687 686 601 544 684 578 688 544 702
Top Tube (actual) 496 519 592 634 641 637
Seat Tube C-T 424 586 451 640 550 475 571 586 488 543
Head Angle 60 61 64 77 83 84 58 58 80 69
Seat Angle 81 70 60 82 80 80 60 64 76 69
Head Tube 148 135 115 162 155 181 126 138 173 209
Chainstay 484 469 440 409 454 377 527 523 446 450
Wheelbase 1145 1130 1024 1017 896 1189 1096 1050 1095 985
Front Centre 833 825 797 817
Standover 646 938 800 839 710 708 928 951
BB Drop 64 77 65 68 68 55 71 54 49 47
BB Height 330 348
BB Type BSA 73mm BSA 73mm
Fork Rake / Offset 48 47 46 39 50 45 53 48 59 55
Fork Length (A2C) 419 557 376 448 410 462 438 502 407mm 407mm
Seatpost Diameter 31 34 31.6mm 31.6mm
Wheel Size 650b 650b
Tyre Max Width 58mm 58mm
Handlebar Width 694 728
Stem Length 78 97 75 82
Stem Angle 5 6 5 6
Crank Length 144 158 154 145
Headset 44mm 44mm
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  Kona Unit X
2020: L 		Kona Unit X
2020: XL 		Surly Ogre
2020: LG 		Surly Ogre
2020: XL 		Surly Bridge Club
2018: LG 		Surly Bridge Club
2018: XL 		Brother Big Bro
2021: Large (20) 		Brother Big Bro
2021: xLarge (22) 		On-One Bootzipper 650b
2019: LRG 		On-One Bootzipper 650b
2019: XLG
Image showing geometry measurements

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