2021 v.3 Disc Soma Fabrications Grand Randonneur Base 58

Build

650B/27.5 in × 42 mm

Insights

Average stack and reach vs trend of low-trail bikes

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
592mm
Reach
395mm
Stack to Reach Ratio
1.5:1
Seat Tube Length, C-T
580mm
Top Tube Length, Effective/Horizontal Center
577mm
Top Tube Slope
3.8deg
Head Tube Angle
73deg
Seat Tube Angle
73deg
Head Tube Length
185mm
Bottom Bracket Drop
65mm
Bottom Bracket Height
269mm
Chainstay Length
430mm
Chainstay Length Horizontal
425.1mm
Front-Center
628mm
Front-Center Horizontal
624.9mm
Wheelbase
1050mm
Fork Offset/Rake
65mm
Trail
34.1mm
low
Mechanical Trail
32.7mm
Wheel Flop
9.6mm
Standover Height
817.9mm
Tire to Pedal Spindle Distance
With 170 mm cranks
124mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
99mm

Base Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
42mm
Tire Outer Diameter
668mm
Bike Length with Tires
1718mm
Suspension Type
Rigid, non-suspension corrected
Bar Type
Drop Bar
Frame Material
Steel
Fork Material
Steel
Brake Type
Disc
Source:https://www.somafab.com/archives/product/grand-randonneur-frame-set