2018 Surly Bikes Krampus Base

	S	M	L	XL
Stack	593mm	602mm	612mm	621mm
Reach	404mm	426mm	448mm	470mm
Stack to Reach Ratio	1.47:1	1.41:1	1.37:1	1.32:1
Seat Tube Length, C-T	375mm	425mm	475.5mm	525mm
Top Tube Length, Effective/Horizontal HT Top	585mm	610mm	635mm	660mm
Top Tube Length, Actual C-C	556.8mm	573mm	595.1mm	621.8mm
Top Tube Slope	24.5deg	19.6deg	15deg	10.8deg
Head Tube Angle	69deg	69deg	69deg	69deg
Seat Tube Angle	73deg	73deg	73deg	73deg
Head Tube Length	90mm	100mm	110mm	120mm
Bottom Bracket Drop	65mm	65mm	65mm	65mm
Bottom Bracket Height	322.2mm	322.2mm	322.2mm	322.2mm
Chainstay Length	435mm	435mm	435mm	435mm
Chainstay Length Horizontal	430.1mm	430.1mm	430.1mm	430.1mm
Front-Center	659.9mm	685.6mm	711.2mm	736.8mm
Front-Center Horizontal	656.7mm	682.5mm	708.2mm	733.9mm
Wheelbase	1086.8mm	1112.6mm	1138.3mm	1164mm
Fork Offset/Rake	47mm	47mm	47mm	47mm
Fork Length (Axle-To-Crown)	483mm	483mm	483mm	483mm
Trail	98.3mm very high	98.3mm very high	98.3mm very high	98.3mm very high
Mechanical Trail	91.8mm	91.8mm	91.8mm	91.8mm
Wheel Flop	32.9mm	32.9mm	32.9mm	32.9mm
Standover Height	770mm	797mm	825mm	854mm
Tire to Pedal Spindle	97.7mm 175 mm cranks	123.4mm 175 mm cranks	154mm 170 mm cranks	174.6mm 175 mm cranks
Pedal Spindle to Ground Clearance	147.2mm 175 mm cranks	147.2mm 175 mm cranks	152.2mm 170 mm cranks	147.2mm 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/krampus/geometry

Geometry