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Surly Frames

Surly Krampus Frameset

Surly Krampus Frameset

Surly Krampus Frameset

Stock Status: Sold Out
A 29+ trail bike that can go over, off, or through just about anything in its path
Oh damn it. This product is sold out. call or email and we can let you know your ETA.
Surly says...... As the first “plus” bike to hit the market, Krampus changed the way many people approach trail riding. It’s shown people the light of how high volume, large diameter tires can vastly improve the ride experience. It’s also done a bang-up job dispelling the myth that big tires make you slow.

The Krampus frame is constructed using the same custom-designed, frame-specific, Surly CroMoly “’Natch” steel tubes found on many of our other trail bikes.The main triangle’s tubes are internally butted with some tubes externally tapered, flared like a trumpet and ovalized to add stiffness and strength without adding weight. When you add in the 3” tires, it makes for a resilient and lively ride that’s durable and fun as hell.

Krampus is kind of like the opposite of a mullet: long in the front and short in the rear. With a long toptube and compact chainstays, it takes trail-shredding abilities to the next level. A mullet may be business in the front, party in the back but Krampus makes partying its business. As Thor puts it: “Lean back, hang on, and ride that wild horse.”

Frameset Spec:

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 - 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)

Brake Compatibility - 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)    
1x (Mtn): 28T
1x (Boost): 30T
2x (Boost): 24/36T

Bottom Bracket - 73mm threaded (1.37" x 24TPI)

Tyre Clearance - 29 x 3.0”

Rigid Fork Spec - 483 x 47mm

Max Suspension Fork Length - 550 x 51mm (29+ 120mm)

Frame Bottle Mounts - 1 Standard + 1 Three-Pack

Fork Bottle Mounts - 2 Three-Pack

Frame Rack Mounts - Yes (upper and lower threaded)

Fork Rack MountsYes - (upper, lower, and mid-blade threaded)

Other Features - Internal dropper post routing compatible
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