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Surly Lowside Frameset

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The Lowside is the bike that gets you across town for a quick rip on singletrack, then over to the bar for a night out. It’s the bike you turn to when you’re not entirely sure what the night has in store. It’s the bike to grab when you want to have just much fun riding to the trail as you do from the trail itself. Singlespeeding is an integral part of Surly’s DNA, and the Lowside continues the tradition, by taking a simpler approach to trail riding.

  • 100% Surly 4130 CroMoly frame, main triangle is double-butted; 1-1/8" threadless CroMoly fork
  • Singlespeed “specific” (derailleur hanger but no Trip Guides)
  • Dropper post routing
  • Gnot-Boost rear spacing
  • Front and rear thru-axle
  • 26” x 3” or 27.5” x 2.8” tire clearance
  • Frame Type: Rigid
  • Fork Type: Rigid
  • Wheel Size: 26+ , 27.5"
  • Frame Material: Steel
  • Fork Material: Steel
  • Color: Rainbow in the Dark or Astro Turf Green
  • Defined Color: Black
  • Front Axle: 15mm Thru x 110mm
  • Rear Axle: 12mm Thru x 145mm , 10mm Thru x 142mm , 12mm Thru x 148mm
  • Brake Type: Disc

Frame measurements (mm) XS SM MD LG XL
A. BB Drop 55 55 55 55 55
B. Chainstay Length 425 425 425 425 425
C. Fork Length - Axle to Crown 420 420 420 420 420
D. Fork Offset 47 47 47 47 47
E. Head Tube Angle (deg) 70 70 70 70 70
F. Headtube Length 110 125 140 155 170
G. Reach 414.5 429.3 445.3 461 477
H. Seat Tube Angle (deg) 74 74 74 74 74
I. Seat Tube Length - Center to Top 316 366 416 466 516
J. Stack 542.2 560.3 574.4 588.5 602.5
K. Standover 700 729 762 792 823
L. Top Tube Length (Effective) 570 590 610 630 650
M. Wheelbase 1068 1089 1110 1131 1152