The bike that started it all the plus-size movement that is. The Krampus features Surlys Gnot-Boost rear hub spacing of 145mm; compatible with Boost 148 x 12mm thru-axle, 142 x 12mm thru-axle and 135mm quick-release hubs. Rolling on 29 x 3 tires, this bike can get you over just about anything you point it at.

• 100% Surly Chromoly steel frame and fork; double-butted main triangle and 44mm headtube
• The tubeset uses Surly custom trumpet tubes for greater stiffness and durability
• Adjustable rear dropouts with 145mm Gnot-Boost spacing. Works with 142, 148 12mm thru-axle, as well as 135mm with 10/12 washer
• Internal dropper seatpost routing
• E.D. coated for an added layer of internal frame protection
• Clearance for 29 x 3″ tires

BUILD KIT:

• Frame : 100% Surly Chromoly Steel, Natch tubing, double-butted main triangle, trumpet flared tubes, TIG welded, E.D. coated
• Fork : 100% Surly Chromoly Steel, Natch tubing, double-butted tapered fork blades, TIG welded, E.D. coated
• Rear Shock :
• Front Derailleur :
• Rear Derailleur : Shimano Deore RD-M6100
• Cassette : OE 12-spd, 11-51t
• Chain : KMC X12 Anti-Rust
• Crankset : Shimano Deore MT510
• Bottom Brcket : Shimano BSA
• Shifter(s) : Shimano Deore SL-M6100
• Brakes Levers : SRAM FR5
• Brakes : Avid BB5 mechanical brakes
• Rotors : 180F/160R
• Headset : Cane Creek
• Stem : Kalloy 31.8
• Handlebar : Salsa Rustler 31.8
• Seatpost : Kalloy, 30.9, 400
• Saddle : Selle Italia
• Wheels : WTB ST i40 TCS 2.0, Novetech Hubs
• Tires : Surly Dirt Wizard 29 x 3″, 60tpi, Tubeless Ready

SIZING: Surly recommends the following sizes based on rider height

• SM 5’4″ – 5’8″
• MD 5’7″ – 6′
• LG 5’11” – 6’3″
• XL 6’2″ – 6’6″