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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 476 555 344 479 380 396 365 390 515 405
Stack 538 555 576 535 534 502 528 563 569 718
Top Tube (effective) 751 634 508 703 656 538 551 579 616 731
Top Tube (actual) 564 603 493 645 600 585
Seat Tube C-T 501 597 593 578 524 555 593 614 573 591
Head Angle 62 54 61 81 76 79 58 81 80 77
Seat Angle 73 88 83 78 63 80 72 70 60 67
Head Tube 140 115 111 130 161 149 106 105 167 182
Chainstay 392 450 443 374 371 499 373 404 515 347
Wheelbase 1308 1352 1031 908 1109 904 1198 1148 1001 983
Front Centre 776 717 703 775
Standover 893 905 929 1009 732 1010 766 816
BB Drop 60 68 60 72 51 71 64 69 63 62
BB Height 332 339
BB Type BSA 73mm BSA 73mm
Fork Rake / Offset 44 50 46 46 38 48 54 49 48 49
Fork Length (A2C) 545 388 535 374 414 350 564 518 407mm 407mm
Seatpost Diameter 35 33 31.6mm 31.6mm
Wheel Size 650b 650b
Tyre Max Width 58mm 58mm
Handlebar Width 755 869
Stem Length 77 85 102 106
Stem Angle 5 6 6 5
Crank Length 144 191 169 193
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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