2021 Soma Fabrications Double Cross Disc 650b 54

Build

650B/27.5 in × 47 mm

Insights

Somewhat upright stack and reach vs trend of cyclocross bikes
Design deviates from other sizes of Soma Fabrications Double Cross

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
592mm
Reach
379mm
Stack to Reach Ratio
1.56:1
Seat Tube Length, C-T
540mm
Top Tube Length, Effective/Horizontal Center
560mm
Top Tube Slope
8deg
Head Tube Angle
71.5deg
Seat Tube Angle
73deg
Head Tube Length
155mm
Bottom Bracket Drop
70mm
Bottom Bracket Height
269mm
Chainstay Length
425mm
Chainstay Length Horizontal
419.2mm
Front-Center
604mm
Front-Center Horizontal
599.8mm
Wheelbase
1019mm
Fork Offset/Rake
44mm
Trail
67mm
high
Mechanical Trail
63.6mm
Wheel Flop
20.2mm
Standover Height
798.6mm
Tire to Pedal Spindle Distance
With 170 mm cranks
95mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
99mm

Disc 650b Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
47mm
Tire Outer Diameter
678mm
Bike Length with Tires
1697mm
Suspension Type
Rigid, non-suspension corrected
Bar Type
Drop Bar
Frame Material
Steel
Fork Material
Steel
Brake Type
Disc

Published Sizing Recommendations

Height
173 cm
to
180 cm
Source:https://www.somafab.com/archives/product/double-cross-disc, http://www.somafab.com/archives/product/double-cross-disc