Frame Construction

4130 Chromoly, Natch tubing, double-butted main triangle, TIG welded

Fork Construction

4130 Chromoly, Natch tubing, double-butted tapered fork blades, TIG welded, ED coated

Rear Dropout Configuration Vertical

Rear Hub Spacing:10 x 135mm

Front Hub Spacing:10 x 100mm

Rear Brake:Disc - 51mm I.S. (203mm max rotor)

Rim - Canti (removable posts)

Front Brake:Disc - 51mm I.S. (203mm max rotor)

Rim - Canti (removable posts)

Head Tube:Ø34mm

Steerer Tube:Ø28.6mm (1-1/8")

Crown Race:Ø30mm (1-1/8")

Stock Headset Upper (S.H.I.S.):EC34/28.6

Stock Headset Lower (S.H.I.S.):EC34/30

Seat Collar:Ø30mm

Seatpost:Ø27.2mm

Front Derailleur (Clamp)

Top-pull (Ø28.6mm)

Max Chainring (CL)[3]

No frame limitations

Bottom Bracket:68mm threaded (1.37" x 24TPI)

Tire Clearance Frame [1]/[2]:26 x 2.5" (w/ fenders)

Tire Clearance Fork [1]:26 x 3.0"

Rigid Fork Spec:420 x 43mm

Max Suspension Fork Length [4]:N/A

Bottle Mounts Frame:4 Standard

Bottle Mounts Fork:4 Three-Pack

Rack Mounts Frame:Yes (Surly Dummy Rails)

Rack Mounts Fork:Yes (upper, lower, and mid-blade threaded)

Fender Mounts Frame:Yes

Fender Mounts Fork:Yes

Other Features

Kickstand plate

Dedicated Rohloff cable routing and mount for OEM 2 axle plate

[1] Different tire and rim combinations will result in different clearances.