Surly Krampus Frameset Highlights
Frame Construction
4130 Chromoly, Natch tubing, double-butted main triangle, trumpet flared tubes, TIG welded, ED coated
Fork Construction
4130 Chromoly, Natch tubing, double-butted tapered fork blades, TIG welded, ED coated
Rear Dropout Configuration
Horizontal slotted with optional vertical dumpout
Rear Hub Spacing
“Gnot-Boost” 145mm
12 x 142mm or 12 x 148mm (Surly axle included)
10 x 135mm with Surly 10/12 Adapter Washers (not included)
Front Hub Spacing
15 x 110mm (Surly axle included)
Rear Brake
Disc – 51mm I.S. (203mm max rotor)
Front Brake
Disc – 51mm I.S. (203mm max rotor)
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
Ø33.1mm
Seatpost
Ø30.9mm
Front Derailleur (Clamp)
High direct mount top-pull (Ø34.9mm)
26mm offset adapter (not included) for 142 or 135mm rear hub spacing
29mm offset adapter (not included) for 148mm rear hub spacing
Max Chainring (CL) [3]
1x (Mtn): 28T
1x (Boost): 30T
2x (Boost): 24/36T
Bottom Bracket
73mm threaded (1.37″ x 24TPI)
Tire Clearance Frame [1]/[2]
29 x 3.0”
Tire Clearance – Rigid Fork [1][5]
29 x 3.0”
Rigid Fork Spec
483 x 47mm
Max Suspension Fork Length [4]
550 x 51mm (29+ 120mm)
Bottle Mounts Frame
1 Standard + 1 Three-Pack
Bottle Mounts Fork
2 Three-Pack
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
N/A
Other Features
Internal dropper post routing compatible
