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Surly Bikes

FM2003

Surly ECR 29+ Frameset

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The ECR is Surly’s ultimate off-road touring machine. It has been re-designed specifically for 27.5+ or 29+ wheel platforms, and has been updated to include Surly’s Gnot-Boost rear hub spacing; compatible with Boost 148 x 12mm thru-axle, 142 x 12mm thru-axle and 135mm quick-release hubs.

  • Surly 4130 CroMoly steel, main triangle double-butted frame
  • TIG-welded, horizontal-slotted dropout with derailleur hanger, Surly Gnot-Boost spacing
  • Rohloff torque arm slot and threaded eyelets for fenders, racks and Surly trailer mounts
  • Full-length Surly Trip Guide housing line guides for derailleurs and brakes; two sets of Three Pack bosses
  • Frame is ED Coated for increased life expectancy
  • Tire clearance for 29 x 3" with fenders

  • Platform: ECR
  • Mfg Size: Medium
  • TT (Effective): 600
  • Frame Type: Rigid
  • Fork Type: Rigid
  • Wheel Size: 29+
  • Frame Material: Steel
  • Fork Material: Steel
  • Color: Tank Green
  • Defined Color: Green
  • Front Axle: QR x 100mm
  • Rear Axle: 12mm Thru x 145mm
  • Brake Type: Disc

Frame measurements (mm) MD LG XL
A. BB Drop 80.0 80.0 80.0
B. Chainstay Length 451.0 451.0 451.0
C. Fork Length - Axle to Crown 468.0 468.0 468.0
D. Fork Offset 43.0 43.0 43.0
E. Head Tube Angle (deg) 70.0 70.0 70.0
F. Headtube Length 100.0 125.0 150.0
G. Reach 408.0 420.0 433.0
H. Seat Tube Angle (deg) 72.5 72.5 72.5
I. Seat Tube Length - Center to Top 457.2 507.9 558.7
J. Stack 609.5 633.0 656.5
K. Standover 805.0 840.0 875.0
L. Top Tube Length (Effective) 600.0 620.0 640.0
M. Wheelbase 1090.0 1111.0 1132.5

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