Surly Krampus Frameset – The Original 29+ Trail Legend

The Krampus is built to make partying your business. Designed for aggressive trail riding and bikepacking adventures, this steel 29+ frame delivers unmatched traction, rollover, and playfulness. With a long toptube, short chainstays, and modern trail geometry, Krampus takes hardtail capability to the next level.

Key Features:

• Modern Trail Geometry: Long front center and short rear end for confident handling and responsive climbing.

• Steel Durability: 100% Surly 4130 Chromoly steel with Natch tubing and E.D. coating for exceptional strength and corrosion resistance.

• Fully Loaded Compatibility: Dropper post ready, rack and fender mounts, internal cable routing, and suspension-corrected fork.

• Wide Tire Clearance: Built to accommodate up to 29” x 3.0” tires for superior grip and comfort.

• Versatile Standards: Gnot-Boost rear spacing fits 12x142mm, 12x148mm, or 10x135mm hubs using Surly adapter washers.

Specifications:

• Intended Use: Trail

• Frame Material: 4130 Chromoly steel, TIG welded, ED coated

• Fork Material: 4130 Chromoly steel, double-butted tapered fork blades

• Wheel Size: 29"

• Brake Type: Hydraulic Disc (Flat Mount)

• Headtube Diameter: 44mm

• Seatpost Diameter: 30.9mm (dropper compatible)

• Bottom Bracket: 73mm threaded (BSA)

• Hub Spacing:

  • Front: 15 x 110mm (axle included)

  • Rear: Gnot-Boost 145mm (12 x 142mm / 12 x 148mm compatible; 10 x 135mm with adapter washers)

• Max Chainring:

  • 1x (Mtn): 28T

  • 1x (Boost): 30T

  • 2x (Boost): 24/36T

• Mounts: Bottle, rack, and fender mounts

• Cable Routing: Internal

• Di2 Compatible: No