2015 Surly Bikes Karate Monkey Legacy

	Small 16"	Medium 18"	Large 20"	xLarge 22"
Stack	591mm	603mm	614mm	628mm
Reach	395mm	415mm	429mm	440mm
Stack to Reach Ratio	1.5:1	1.45:1	1.43:1	1.43:1
Seat Tube Length, C-T	406.4mm	457.2mm	508mm	558.8mm
Top Tube Length, Effective/Horizontal Center	575.6mm	599.3mm	616.3mm	632.2mm
Top Tube Slope	21.5deg	16.8deg	12.5deg	8.8deg
Head Tube Angle	71deg	71.5deg	72deg	72deg
Seat Tube Angle	73deg	73deg	73deg	73deg
Head Tube Length	100mm	100mm	110mm	125mm
Bottom Bracket Drop	68mm	68mm	68mm	68mm
Bottom Bracket Height	306.5mm	306.5mm	306.5mm	306.5mm
Chainstay Length	431mm	431mm	431mm	431mm
Chainstay Length Max	431mm	431mm	431mm	431mm
Chainstay Length Horizontal	425.6mm	425.6mm	425.6mm	425.6mm
Chainstay Length Horizontal Max	425.6mm	425.6mm	425.6mm	425.6mm
Front-Center	624.2mm	642.9mm	654.7mm	670.9mm
Front-Center Horizontal	620.5mm	639.3mm	651.2mm	667.4mm
Wheelbase	1046.1mm	1064.9mm	1076.8mm	1093mm
Wheelbase Max	1046.1mm	1064.9mm	1076.8mm	1093mm
Fork Offset/Rake	43mm	43mm	43mm	43mm
Fork Length (Axle-To-Crown)	468mm	468mm	468mm	468mm
Trail	83.5mm very high	80mm high	76.5mm high	76.5mm high
Mechanical Trail	78.9mm	75.8mm	72.7mm	72.7mm
Wheel Flop	25.7mm	24.1mm	22.5mm	22.5mm
Standover Height	762.9mm	792.7mm	822.5mm	853.5mm
Tire to Pedal Spindle	79.7mm 170 mm cranks	93.4mm 175 mm cranks	105.2mm 175 mm cranks	121.4mm 175 mm cranks
Pedal Spindle to Ground Clearance	136.5mm 170 mm cranks	131.5mm 175 mm cranks	131.5mm 175 mm cranks	131.5mm 175 mm cranks

Very Upright

Somewhat Upright

Average

Somewhat Aggressive

Very Aggressive

The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.

Category Trend

Source:https://surlybikes.com/bikes/legacy/karate_monkey/karate_monkey_ops/geometry

Geometry