2023 Sour Bicycles Crumble Base

	s	m	l	xl
Stack	599.2mm	635.5mm	640mm	644.6mm
Reach	451mm	462mm	473mm	484mm
Stack to Reach Ratio	1.33:1	1.38:1	1.35:1	1.33:1
Seat Tube Length, Unknown	370mm	410mm	450mm	510mm
Top Tube Length, Effective/Horizontal Unknown	606.4mm	633.7mm	646.9mm	658.5mm
Top Tube Slope	23.9deg	22.9deg	19.2deg	13.9deg
Head Tube Angle	66.5deg	66.5deg	66.5deg	66.5deg
Seat Tube Angle	75.5deg	74.9deg	74.9deg	74.9deg
Head Tube Length	95mm	100mm	105mm	110mm
Bottom Bracket Drop	48mm	65mm	65mm	65mm
Bottom Bracket Height	307.5mm	309.5mm	309.5mm	309.5mm
Chainstay Length	415mm	425mm	425mm	425mm
Chainstay Length Horizontal	412.2mm	420mm	420mm	420mm
Front-Center	750.3mm	765.8mm	783.7mm	800.6mm
Front-Center Horizontal	748.8mm	763mm	781mm	798mm
Wheelbase	1161mm	1183mm	1201mm	1218mm
Fork Offset/Rake	43mm	43mm	43mm	43mm
Fork Length, Unknown	515mm	531mm	531mm	531mm
Trail	107.7mm very high	116mm very high	116mm very high	116mm very high
Mechanical Trail	98.8mm	106.3mm	106.3mm	106.3mm
Wheel Flop	39.4mm	42.4mm	42.4mm	42.4mm
Tire to Pedal Spindle	224.8mm 170 mm cranks	221.3mm 170 mm cranks	239.2mm 170 mm cranks	256.1mm 170 mm cranks
Pedal Spindle to Ground Clearance	137.5mm 170 mm cranks	139.5mm 170 mm cranks	139.5mm 170 mm cranks	139.5mm 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/candy-shop/bikes/crumble/

Geometry