2021 Blocks Lo-Fi Base

	XS	S	M	L
Stack	548.3mm	557.8mm	584mm	595.8mm
Reach	342.8mm	360mm	361.2mm	377.8mm
Stack to Reach Ratio	1.6:1	1.55:1	1.62:1	1.58:1
Seat Tube Length, C-T	425mm	495mm	535mm	575mm
Seat Tube Length, C-C	390mm	460mm	500mm	540mm
Top Tube Length, Effective/Horizontal HT Top	50mm	52mm	540mm	56mm
Top Tube Slope	17.9deg	9.9deg	7.6deg	5.3deg
Head Tube Angle	72deg	72deg	72deg	72deg
Seat Tube Angle	74deg	74deg	73deg	73deg
Head Tube Length	130mm	140mm	160mm	180mm
Bottom Bracket Drop	58mm	58mm	58mm	58mm
Bottom Bracket Height	287.3mm	287.3mm	287.3mm	287.3mm
Chainstay Length	440mm	440mm	440mm	440mm
Chainstay Length Horizontal	436.2mm	436.2mm	436.2mm	436.2mm
Front-Center	557.6mm	577.8mm	587.5mm	607.8mm
Front-Center Horizontal	554.6mm	574.9mm	584.6mm	605.1mm
Wheelbase	990.8mm	1011.1mm	1020.8mm	1041.3mm
Fork Offset/Rake	50mm	50mm	50mm	50mm
Fork Length (Axle-To-Crown)	385mm	385mm	392.5mm	385mm
Trail	59.6mm mid/neutral	59.6mm mid/neutral	59.6mm mid/neutral	59.6mm mid/neutral
Mechanical Trail	56.7mm	56.7mm	56.7mm	56.7mm
Wheel Flop	17.5mm	17.5mm	17.5mm	17.5mm
Tire to Pedal Spindle	42.3mm 170 mm cranks	62.5mm 170 mm cranks	72.2mm 170 mm cranks	92.5mm 170 mm cranks
Pedal Spindle to Ground Clearance	117.3mm 170 mm cranks	117.3mm 170 mm cranks	117.3mm 170 mm cranks	117.3mm 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.

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Geometry