2025 Surly Bikes Krampus 120mm Fork SM

Build

700C/29 in × 2.6 in

Insights

Average stack and reach vs trend of hardtail trail mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry

Stack and Reach vs. Category Trend
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Reach250mm300mm350mm400mm450mm500mm550mmStack350mm400mm450mm500mm550mm600mm650mmMDLGXLSM

Geometry

Stack
597mm
Reach
397mm
Stack to Reach Ratio
1.5:1
Seat Tube Length, C-T
368mm
Top Tube Length, Effective/Horizontal HT Top
585mm
Top Tube Length, Actual C-C
556.8mm
Top Tube Slope
25.9deg
Head Tube Angle
68.4deg
Seat Tube Angle
72.4deg
Head Tube Length
90mm
Bottom Bracket Drop
60mm
Bottom Bracket Height
317mm
Chainstay Length
435mm
Chainstay Length Horizontal
430.8mm
Front-Center
667.9mm
Front-Center Horizontal
665.2mm
Wheelbase
1096mm
Fork Offset/Rake
51mm
Fork Length (Axle-To-Crown)
498mm
Trail
94.4mm
very high
Mechanical Trail
87.8mm
Wheel Flop
32.3mm
Standover Height
776mm
Tire to Pedal Spindle Distance
With 170 mm cranks
120.8mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
147mm

120mm Fork Build

Wheel Size
700C, 29 inch (622mm BSD)
Tire Width
2.6in
Tire Outer Diameter
754.1mm
Bike Length with Tires
1850.1mm
Crank Length
170mm
Handlebar Width
750mm
Stem Length
70mm
Stem Angle
7deg
Suspension Type
Hardtail (Front suspension)
Bar Type
Flat Bar
Fork Travel
120mm
Suspension Sag
Unknown
Frame Material
Steel
Fork Material
N/A
Brake Type
Disc
Source:https://surlybikes.com/bikes/krampus