Surly Krampus Frameset - 29" Steel Sage Green X-Large

Meet the New Surly Krampus Frameset, a rugged steel platform built for aggressive trails and brutal conditions. In Sage Green, this XL frameset embraces 29+ sizing, accepting up to 29 x 3.0 tires for confident float on loose surfaces. Crafted from 4130 CroMoly steel, it blends responsive stiffness with forgiving ride quality.

New Surly Krampus Frameset 29in Steel Sage Green XL

Frame and materials

100% Surly 4130 CroMoly steel forms the backbone of this hard-wearing frameset. The double-butted main triangle and 44mm headtube deliver precise steering and efficient power transfer, while trumpet-tube geometry echoes Surly's rugged lineage for durability on rough trails.

Drivetrain and dropouts

Gnot-Boost adjustable rear dropouts provide flexible wheel compatibility while maintaining clean alignment. Rear spacing includes 145mm with 12mm through-axle capability, plus compatibility with Boost 148 x 12, 142 x 12, and 135mm QR hubs, so you can adapt without swapping frames.

Fit, routing, and tires

The internal dropper routing clears cables for a tidy cockpit. With a 30.9mm seat tube and a rigid steel fork, the Krampus frameset is built for decisive handling and massive tire clearance — up to 29 x 3.0 inches.

Ideal use and care

Perfect for riders who want a versatile winter/rough-trail ride, bikepacking with chunky tires, or epic cross-season explorations. This XL frameset in Sage Green pairs classic steel durability with modern versatility. Note: complete bike requires additional components and wheels.