2018 Surly Bikes Krampus 100mm Fork

Design
Flat Bar, Hardtail (Front suspension)
Frame
Steel
Fork
100mm travel, 20% sag
Features
Disc brake
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category
Average stack and reachvs category

Geometry

SM
MD
LG
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
368mm
419mm
470mm
521mm
Top Tube Length, Effective/Horizontal Center
585mm
610mm
635mm
660mm
Top Tube Length, Actual C-C
556.8mm
573mm
595.1mm
621.8mm
Top Tube Slope
17deg
17deg
17deg
17deg
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
660.1mm
686mm
710.9mm
736.8mm
Front-Center Horizontal
656.9mm
682.9mm
707.9mm
733.9mm
Wheelbase
1087mm
1113mm
1138mm
1164mm
Fork Offset/Rake
47mm
47mm
47mm
47mm
Fork Length (Axle-To-Crown)
510mm
510mm
510mm
510mm
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
97.9mm
175 mm cranks
123.8mm
175 mm cranks
148.7mm
175 mm cranks
174.6mm
175 mm cranks
Pedal Spindle to Ground Clearance
147.2mm
175 mm cranks
147.2mm
175 mm cranks
147.2mm
175 mm cranks
147.2mm
175 mm cranks

100mm Fork Build

SM
MD
LG
XL
Wheel Size
700C/29"
622 mm BSD
700C/29"
622 mm BSD
700C/29"
622 mm BSD
700C/29"
622 mm BSD
Tire Width
3in
3in
3in
3in
Tire Outer Diameter
774.4mm
774.4mm
774.4mm
774.4mm
Bike Length with Tires
1861.4mm
1887.4mm
1912.4mm
1938.4mm
Crank Length
175mm
175mm
175mm
175mm
Stem Length
50mm
50mm
50mm
50mm

Stack and Reach vs. Category Trend

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.

Learn more about the Upright/Aggressive Scale
Category Trend
Hardtail Trail MTB
Source:https://surlybikes.com/bikes/krampus/geometry