2024 Soma Fabrications Riff 2.0 25% Sag

	XS	SM	MD	LG
Stack	603mm	613mm	622mm	626mm
Reach	404mm	425mm	445mm	467mm
Stack to Reach Ratio	1.49:1	1.44:1	1.4:1	1.34:1
Seat Tube Length, C-T	360mm	390mm	420mm	460mm
Top Tube Length, Actual C-C	568mm	590mm	613mm	642mm
Top Tube Slope	27.2deg	24.2deg	21.4deg	17.2deg
Head Tube Angle	69deg	69deg	69deg	69deg
Seat Tube Angle	75.2deg	75.2deg	75.2deg	75.2deg
Head Tube Length	100mm	110mm	120mm	130mm
Bottom Bracket Drop	55mm	55mm	55mm	55mm
Bottom Bracket Height	292.9mm	292.9mm	292.9mm	292.9mm
Chainstay Length	427mm	427mm	427mm	427mm
Chainstay Length Max	442mm	442mm	442mm	442mm
Chainstay Length Horizontal	423.4mm	423.4mm	423.4mm	423.4mm
Chainstay Length Horizontal Max	438.6mm	438.6mm	438.6mm	438.6mm
Front-Center	669mm	692mm	717mm	747mm
Front-Center Horizontal	669.6mm	692.6mm	716.6mm	747.6mm
Wheelbase	1093mm	1116mm	1140mm	1171mm
Wheelbase Max	1108.1mm	1131.1mm	1155.1mm	1186.1mm
Fork Offset/Rake	51.5mm	49.8mm	50.3mm	57.3mm
Fork Length (On-Axis)	484mm	484mm	484mm	484mm
Trail	78.3mm high	80.2mm very high	79.6mm high	72.2mm high
Mechanical Trail	73.1mm	74.9mm	74.3mm	67.4mm
Wheel Flop	26.2mm	26.8mm	26.6mm	24.1mm
Standover Height	752mm	770mm	717mm	747mm
Tire to Pedal Spindle	151.1mm 170 mm cranks	174.1mm 170 mm cranks	199.1mm 170 mm cranks	229.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	122.9mm 170 mm cranks	122.9mm 170 mm cranks	122.9mm 170 mm cranks	122.9mm 170 mm cranks

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.

Category Trend

Source:https://www.somafab.com/archives/product/riff-27-5-hardtail-frame

Geometry