2025 Sour Bicycles Space Cake Base

	S	M	L	XL
Stack	553mm	568mm	582mm	596mm
Reach	371mm	373mm	380mm	385mm
Stack to Reach Ratio	1.49:1	1.52:1	1.53:1	1.55:1
Seat Tube Length, C-T	490mm	520mm	560mm	590mm
Top Tube Length, Effective/Horizontal Unknown	535mm	545mm	565mm	578mm
Top Tube Slope	9.2deg	7.6deg	4.9deg	3.4deg
Head Tube Angle	70deg	70.5deg	71deg	71.5deg
Seat Tube Angle	74deg	73.5deg	73deg	72.5deg
Head Tube Length	130mm	145mm	160mm	175mm
Bottom Bracket Drop	76mm	76mm	76mm	76mm
Bottom Bracket Height	273mm	273mm	273mm	273mm
Chainstay Length	428mm	428mm	428mm	428mm
Chainstay Length Horizontal	421.2mm	421.2mm	421.2mm	421.2mm
Front-Center	594.7mm	598.7mm	603.6mm	608.6mm
Front-Center Horizontal	589.8mm	593.8mm	598.8mm	603.8mm
Wheelbase	1011mm	1015mm	1020mm	1025mm
Fork Offset/Rake	45mm	45mm	45mm	45mm
Fork Length, Unknown	382mm	382mm	382mm	382mm
Trail	79.1mm high	75.9mm high	72.6mm high	69.3mm high
Mechanical Trail	74.4mm	71.5mm	68.6mm	65.7mm
Wheel Flop	25.4mm	23.9mm	22.3mm	20.9mm
Tire to Pedal Spindle	75.7mm 170 mm cranks	79.7mm 170 mm cranks	84.6mm 170 mm cranks	89.6mm 170 mm cranks
Pedal Spindle to Ground Clearance	103mm 170 mm cranks	103mm 170 mm cranks	103mm 170 mm cranks	103mm 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://sour.bike/bikes/road/space-cake/

Geometry