2019 Sour Bicycles Crumble Base

	S 27,5	M 29	M 27,5	L 29	XL 29
Stack	598mm	630mm	602.5mm	634.5mm	639.1mm
Reach	450mm	453.2mm	465.6mm	470mm	484mm
Stack to Reach Ratio	1.33:1	1.39:1	1.29:1	1.35:1	1.32:1
Seat Tube Length, C-T	370mm	410mm	410mm	450mm	510mm
Top Tube Length, Effective/Horizontal Center	590mm	610mm	610mm	630mm	650mm
Top Tube Slope	23.7deg	22.6deg	19.8deg	18.8deg	13.5deg
Head Tube Angle	67deg	67deg	67deg	67deg	67deg
Seat Tube Angle	73.5deg	73deg	73.5deg	73deg	73deg
Head Tube Length	95mm	100mm	100mm	105mm	110mm
Bottom Bracket Drop	48mm	65mm	48mm	65mm	65mm
Bottom Bracket Height	305mm	307mm	305mm	307mm	307mm
Chainstay Length	425mm	430mm	425mm	430mm	430mm
Chainstay Length Horizontal	422.3mm	425.1mm	422.3mm	425.1mm	425.1mm
Front-Center	740.3mm	760.7mm	749.3mm	778.7mm	795.6mm
Front-Center Horizontal	738.7mm	757.9mm	747.7mm	775.9mm	792.9mm
Wheelbase	1161mm	1183mm	1170mm	1201mm	1218mm
Fork Offset/Rake	50.9mm	59.8mm	43mm	59.1mm	60.1mm
Trail	94.6mm very high	93mm very high	103.1mm very high	93.7mm very high	92.6mm very high
Mechanical Trail	87.1mm	85.6mm	94.9mm	86.2mm	85.3mm
Wheel Flop	34mm	33.4mm	37.1mm	33.7mm	33.3mm
Tire to Pedal Spindle	217.3mm 170 mm cranks	218.8mm 170 mm cranks	226.3mm 170 mm cranks	236.7mm 170 mm cranks	253.6mm 170 mm cranks
Pedal Spindle to Ground Clearance	135mm 170 mm cranks	137mm 170 mm cranks	135mm 170 mm cranks	137mm 170 mm cranks	137mm 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/shop/rahmen/268/crumble?c=122

Geometry