2024 Soma Fabrications Riff Base LG

Build

650B/27.5 in × 2.2 in

Insights

Average stack and reach vs trend of hardtail trail mtb bikes
Design deviates from other sizes of Soma Fabrications Riff

Stack and Reach vs. Category Trend
View all sizes

Geometry

Stack
626mm
Reach
467mm
Stack to Reach Ratio
1.34:1
Seat Tube Length, C-T
460mm
Top Tube Length, Actual C-C
642mm
Top Tube Slope
17.2deg
Head Tube Angle
69deg
Seat Tube Angle
75.2deg
Head Tube Length
130mm
Bottom Bracket Drop
55mm
Bottom Bracket Height
292.9mm
Chainstay Length
427mm
Chainstay Length Horizontal
423.4mm
Front-Center
747mm
Front-Center Horizontal
747.6mm
Wheelbase
1171mm
Fork Offset/Rake
57.3mm
Fork Length, Unknown
484mm
Trail
72.2mm
high
Mechanical Trail
67.4mm
Wheel Flop
24.1mm
Standover Height
813mm
Tire to Pedal Spindle Distance
With 170 mm cranks
229.1mm
Pedal Spindle to Ground Clearance
With 170 mm cranks
122.9mm

Base Build

Wheel Size
650B, 27.5 inch (584mm BSD)
Tire Width
2.2in
Tire Outer Diameter
695.8mm
Bike Length with Tires
1866.8mm
Suspension Type
Hardtail (Front suspension)
Bar Type
Flat Bar
Fork Travel
120mm
Suspension Sag
25%
Frame Material
Steel
Fork Material
N/A
Brake Type
Disc
Source:https://www.somafab.com/archives/product/riff-27-5-hardtail-frame