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Size small Karate Monkey frameset in Surly's "Hi-Viz Black." Call or email for availability on other sizes, and/or complete build options.*Bikes and frames are only available for in-store pickup.
With a frame and fork made of custom-designed Surly CroMoly “’Natch” steel, the Karate Monkey delivers a resilient, lively, durable ride. The Karate Monkey frame has recently been updated to include features like internal dropper post routing, a new tubeset that uses the same trumpet tubes found on our Instigator 2.0, and a slight tweak in geometry that is more progressive and trail oriented. The Karate Monkey uses a horizontal dropout with a derailleur hanger spaced to what we call Gnot-Boost spacing. 10 x 135mm QR, 12 x 142, or 12 x 148 Boost™ will all work in the Karate Monkey frame. The frame uses a 44mm headtube for broad fork compatibility and is ED coated for an added layer of internal protection.
Tubing: Surly 4130 CroMoly steel. Main triangle double-butted. TIG-welded
Rear dropouts: Horizontal slotted with derailleur hanger and Surly “Gnot Boost” 135, 142, and/or 148mm hub spacing compatibility;features Rohloff torque arm slot and threaded eyelets for fenders, racks, and Surly trailer mounts
Brake compatibility: 51mm I.S. disc caliper mounts, 180mm max rotor size
Braze-ons: Dual bottle-mounts on XS and S, three bottle-mounts on M–XL, dropper post routing, rack and fender mounts Seatpost: 30.9mm
Seatpost clamp: 33.1mm (Surly stainless included)
Headtube: 44mm I.D. Recommend EC44 lower cups. Zero Stack on top is o.k.
Front derailleur: 28.6mm, high direct-mount
Bottom bracket shell: 73mm wide, threaded standard English (1.37 ̋ x 24t)
Chainring clearance: 32t Boost 1x, 24/36t Boost 2x, 28t 1x, 24/34t 2x
Tire clearance: 27.5 x 3.0 ̋ and 29 x 2.5 ̋, individual tire and rim combos affect tire clearance
Stem clamp: 28.6mm
Tire clearance: 27.5 x 3.0 ̋ and 29 x 2.5 ̋, individual tire and rim combos affect tire clearance Crown race: 30mm
Front brake: 51mm I.S., 180mm max rotor size
Front spacing: 110mm
Axle type: 15mm, thru-axle
Braze-ons: Two bottle-mounts, rack and fender mounts