Frame Construction
4130 Chromoly, Natch tubing, double-butted main triangle, TIG welded, ED coated
Fork Construction
4130 Chromoly, Natch tubing, TIG welded, brazed lugs, ED coated
Rear Dropout Configuration
Vertical
Rear Hub Spacing
12 x 142mm (Surly axle included)
10 x 135mm with Surly 10/12 Adapter Washers (not included)
Front Hub Spacing
12 x 100mm (Surly axle included)
Rear Brake
Disc - Flat Mount (160mm max rotor) – 25mm thick mount / 32mm bolt length
Front Brake
Disc - Flat Mount (160mm max rotor) – Use Brake Manufacturer's Front Flat Mount Adapter and Supplied Bolts
Head Tube
Ø44mm
Steerer Tube
Ø28.6mm (1-1/8")
Crown Race
Ø30mm (1-1/8")
Stock Headset Upper (S.H.I.S.)
ZS44/28.6
Stock Headset Lower (S.H.I.S.)
EC44/30
Seat Collar
Ø30mm
Seatpost
Ø27.2mm
Front Derailleur (Clamp)
Bottom-pull (Ø28.6mm)
Max Chainring (CL)[3]
1x (Road): 44T
2x (Road): 34/50T
3x (Road): 30/39/50T
Bottom Bracket
68mm threaded (1.37" x 24TPI)
Tire Clearance Frame [1]/[2]
27.5 x 2.35" (w/o fenders)
700c x 42mm (w/o fenders)
650b x 50 (w/ fenders)
700c x 38mm (w/ fenders)
Tire Clearance Fork [1]
27.5 x 2.35" (w/o fenders)
700c x 42mm (w/o fenders)
650b x 50 (w/ fenders) 700c x 38mm (w/ fenders)
Rigid Fork Spec
400 x 50mm (40 - 54cm)
400 x 40mm (56 - 64cm)
Max Suspension Fork Length [4]
N/A
Bottle Mounts Frame
3 Standard
Bottle Mounts Fork
N/A
Rack Mounts Frame
Yes (upper and lower threaded)
Rack Mounts Fork
Yes (upper, lower, and mid-blade threaded)
Fender Mounts Frame
Yes
Fender Mounts Fork
Yes
Other Features
Downtube mounted shifter bosses