2019 Surly Bikes Karate Monkey 27.5+ 140mm Front Suspension

	XS	SM	MD	LG	XL
Stack	607mm	607mm	608mm	617mm	627mm
Reach	361mm	387mm	412mm	434mm	457mm
Stack to Reach Ratio	1.68:1	1.57:1	1.48:1	1.42:1	1.37:1
Seat Tube Length, C-T	330mm	368mm	419mm	470mm	521mm
Top Tube Length, Effective/Horizontal HT Top	565mm	590mm	615mm	640mm	665mm
Top Tube Length, Actual C-C	549.7mm	560.4mm	575mm	597.5mm	624.5mm
Top Tube Slope	32.3deg	27.1deg	21.1deg	16.4deg	12.1deg
Head Tube Angle	67.5deg	67.5deg	67.5deg	67.5deg	67.5deg
Seat Tube Angle	71.5deg	71.5deg	71.5deg	71.5deg	71.5deg
Head Tube Length	100mm	100mm	100mm	110mm	120mm
Bottom Bracket Drop	44mm	44mm	44mm	44mm	44mm
Bottom Bracket Height	330.5mm	330.5mm	330.5mm	330.5mm	330.5mm
Chainstay Length	423mm	423mm	423mm	423mm	423mm
Chainstay Length Horizontal	420.7mm	420.7mm	420.7mm	420.7mm	420.7mm
Front-Center	651.8mm	676.7mm	701.7mm	727.6mm	752.6mm
Front-Center Horizontal	650.3mm	675.3mm	700.3mm	726.3mm	751.3mm
Wheelbase	1071mm	1096mm	1121mm	1147mm	1172mm
Fork Offset/Rake	51mm	51mm	51mm	51mm	51mm
Fork Length (Axle-To-Crown)	521mm	521mm	521mm	521mm	521mm
Trail	99.9mm very high	99.9mm very high	99.9mm very high	99.9mm very high	99.9mm very high
Mechanical Trail	92.3mm	92.3mm	92.3mm	92.3mm	92.3mm
Wheel Flop	35.3mm	35.3mm	35.3mm	35.3mm	35.3mm
Standover Height	757mm	775mm	797mm	826mm	855mm
Tire to Pedal Spindle	112.3mm 165 mm cranks	132.2mm 170 mm cranks	152.2mm 175 mm cranks	178.1mm 175 mm cranks	203.1mm 175 mm cranks
Pedal Spindle to Ground Clearance	165.5mm 165 mm cranks	160.5mm 170 mm cranks	155.5mm 175 mm cranks	155.5mm 175 mm cranks	155.5mm 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/karate_monkey#geo-140mm-suspension-fork-2

Geometry