The Krampus Rigid brings Surly’s signature steel construction together with high‑volume 29+ tires to create a trail bike that feels planted, playful, and ready for long days in the woods. Its long front end, short rear, and modern standards give it a lively, capable character on singletrack and bikepacking routes alike, while the Chromoly frame and suspension‑corrected fork offer durability and versatility for riders who like to tinker with setups or build from the parts bin.

• Modern trail standards: dropper post compatibility, 44mm headtube, Gnot-Boost rear spacing, thru-axles, suspension corrected fork
• Compatibility with most mountain bike standards makes it the perfect parts bin bike (no rim brakes allowed though)
• Clearance for 29" x 3" tires

Specs

Frameset

Components

Drivetrain

Wheels

Weight: Complete Bike: 32 lb. 4 oz. for Medium

*Specifications are subject to change without notice

Geometry

Frame Specs

• Wheel/Tire Sizes: 29 x 3.0"
• Max Tire Outer Diameter: 29 x 3.0" (Different tire and rim combinations will result in different clearances. Depending on drivetrain configuration, tire clearance may be limited by the chain and not the frame. For suspension fork tire clearance, please reference the fork manufacturer's website.)
• 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
• Suspension Fork Length (Travel): Max. Suspension fork length: 550 x 51mm (29+ 120mm) (Suspension fork length listed at full extension, not at sag)
• Rigid Fork Length: 483mm
• Fork Offset: 47mm
• Axle to Crown: 483mm
• Rear 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)
• Rear Brake (Rotor): Disc - 51mm I.S. (203mm max rotor)
• Front Brake (Rotor): Disc - 51mm I.S. (203mm max rotor)
• Headset - Upper: ZS44/28.6
• Headset - Lower: EC44/30
• Front Spacing: 15 x 110mm
• Steerer Tube: Ø28.6mm (1-1/8")
• Crown Race: Ø30mm (1-1/8")
• Stem Clamp: Ø28.6mm (1-1/8")
• Seatpost: Ø30.9mm
• Dropper Post Compatible: Yes
• Seatpost Clamp: Ø33.1mm
• Front Derailleur Clamp: (Ø34.9mm)
• Front Derailleur Type: 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
• Bottom Bracket: 73mm threaded (1.37" x 24TPI)
• Crankset (Max Ring): 1x (Mtn): 28T / 1x (Boost): 30T / 2x (Boost): 24/36T (Listed chainring clearance is worst-case scenario. Clearances vary widely depending on components and configurations)
• Bottle Mounts: 1 Standard + 1 Three-Pack
• Rear Fender Mounts: Yes