Surly Krampus Frameset

Surly Krampus Frameset -

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.

If you’re looking to ride through/over/off of obstacles, may the Krampus be your mighty steed. As Thor puts it: “Lean back, hang on, and ride that wild horse.”

Frame Highlights

• Tubing - Surly 4130 CroMoly steel. Custom double-butted trumpet tube main triangle. TIG-welded. ED coated.
• Rear Dropouts - 12mm horizontal and vertical slotted with derailleur hanger and Surly “Gnot-Boost” 135, 142, and/or 148mm hub spacing compatibility
• Brake Compatibility - 51mm I.S. disc caliper mounts, 180mm max rotor size
• Braze-ons/extras - Two down tube bottle-mounts on all sizes (SM-XL), no seat tube bosses
• Seatpost - 9mm
• Seatpost clamp - 1mm (Surly Stainless included)
• Headtube - 44mm
• Front Derailleur Clamp - 9mm, high direct-mount (not included)
• Bottom bracket - 73mm Englich Threaded
• Chainring Clearance - 30t Boost 1x, 24/36t Boost 2x
• Tire Clearance - 29 x 3.0"
• Fork - 15mm Thru-Axle, 1-1/8˝ steerer tube, 203mm disc brake clearance and 29 x 3.0" tyre clearance
• Thru Axle - HU0138 Surly 15x110 and 12x142/148 Thru Axles (included)