Surly Karate Monkey Bike - 27.5" Steel Fool's Gold Small MFG Part Number-HXYXXX00N7688S B67 and B67 S are

B67 and B67 S are the modern versions of B66 models first featured in the 1927 catalog

}Vittoria Rubino V Tire - 700 x 32 Clincher Folding Black 1C Graphene + Silica G2

and even tandem ready model built for tires 28-53mm wide

and dirt collection

These Presta valve stems are compatible with tubeless rims and tires for road

Surly Karate Monkey Bike - 27.5" Steel Fool's Gold Small MFG Part Number-HXYXXX00N7688S B67 and B67 S areThe Karate Monkey features updated progressive trail geometry our custom trumpet tubeset and Surlys Gnot Boost rear dropout system. Available in a variety of colors with multiple drivetrain and wheel size configurations. 100% Surly Chromoly steel frame and fork; double butted main triangle and 44mm headtube The tubeset uses the same trumpet tubes found on Instigator 2. 0 frame Adjustable rear dropouts with 145mm Gnot Boost spacing. Works with 142 148