Surly Karate Monkey Frameset - 27.5" Steel Hi-Viz Black Medium MFPN=H0MCBAXEXX Sirrus features an alloy frame

Sirrus features an alloy frame and steel fork construction

}Wera 8100 SB 2 Zyklop Speed Ratchet Set 3/8" Drive Metric

Includes 4 bolts

}Muc-Off Rim Tape 10m Roll - 28mm

} Increased rolling efficiency

Surly Karate Monkey Frameset - 27.5" Steel Hi-Viz Black Medium MFPN=H0MCBAXEXX Sirrus features an alloy frameSurly Karate Monkey Frameset 27. 5" Steel Hi Viz Black Medium. The 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