Surly Krampus frame set, green

...is the perfect choice for trail riders, bike packers and adventurers looking for a reliable, versatile and fun-to-ride hardtail – with maximum tyre clearance and uncompromising steel quality.

Sizes: S, M,

Colour: Sage Green

The Surly Krampus was the first 29+ mountain bike on the market – and has since permanently changed the way we ride trails. With 29" x 3.0" tyre clearance, a robust steel frame and modern trail geometry, it’s the perfect platform for anyone seeking maximum traction, comfort and riding enjoyment.
Specifications:

Wheel/tyre size: 29" x 3.0"

• Max. tyre diameter: 29" x 3.0"

(Tyre clearance depends on rim and drivetrain configuration)

• Frame: 4130 chromoly, Natch tubes, double-butted, TIG-welded, ED-coated

• Fork: Rigid fork made from 4130 chromoly, 483 mm long, 47 mm offset

• Suspension fork compatibility: up to 550 x 51 mm (29+ / 120 mm travel)

• Axles:

• Front: 15 x 110 mm Boost

• Rear: Gnot-Boost 145 mm – compatible with 12 x 142 mm, 12 x 148 mm or 10 x 135 mm (with adapter)

⚙️ Component compatibility

• Headset:

• Top: ZS44/28.6

• Bottom: EC44/30

• Bottom bracket: BSA 73 mm (1.37" x 24 TPI)

• Seatpost: Ø30.9 mm (dropper-compatible)

• Seat clamp: Ø33.1 mm

• Front derailleur: High Direct Mount, top-pull (Ø34.9 mm)

• Chainring compatibility:

• 1x (Mtn): up to 28T

• 1x (Boost): up to 30T

• 2x (Boost): up to 24/36T

• Brake mount: Disc brake, IS 51 mm (max. 203 mm rotor)

🧳 Features & mounting points

• Bottle cages: 1 standard + 1 three-pack

• Rear mudguard mount: Yes

• Fork and luggage rack mounting possible