2019 Bombtrack Bicycle Company Hook EXT Base

	S	M	L	XL
Stack	542mm	565mm	587mm	608mm
Reach	371mm	380mm	390mm	400mm
Stack to Reach Ratio	1.46:1	1.49:1	1.51:1	1.52:1
Seat Tube Length, C-T	510mm	540mm	570mm	600mm
Top Tube Length, Effective/Horizontal HT Top	541mm	559mm	575mm	592mm
Top Tube Slope	6.1deg	5.3deg	4.4deg	3.5deg
Head Tube Angle	70.25deg	71deg	72deg	72.5deg
Seat Tube Angle	72.5deg	72.5deg	72.5deg	72.5deg
Head Tube Length	110mm	130mm	150mm	170mm
Bottom Bracket Drop	70mm	70mm	70mm	70mm
Bottom Bracket Height	275.3mm	275.3mm	275.3mm	275.3mm
Chainstay Length	425mm	425mm	425mm	425mm
Chainstay Length Horizontal	419.2mm	419.2mm	419.2mm	419.2mm
Front-Center	594.9mm	605.9mm	612.8mm	623.7mm
Front-Center Horizontal	590.8mm	601.8mm	608.8mm	619.8mm
Wheelbase	1010mm	1021mm	1028mm	1039mm
Fork Offset/Rake	48mm	48mm	48mm	48mm
Trail	73mm high	68.1mm high	61.7mm mid/neutral	58.6mm mid/neutral
Mechanical Trail	68.7mm	64.4mm	58.7mm	55.9mm
Wheel Flop	23.2mm	21mm	18.1mm	16.8mm
Standover Height	792mm	818mm	843mm	868mm
Tire to Pedal Spindle	79.6mm 170 mm cranks	90.5mm 170 mm cranks	95mm 172.5 mm cranks	103.4mm 175 mm cranks
Pedal Spindle to Ground Clearance	105.3mm 170 mm cranks	105.3mm 170 mm cranks	102.8mm 172.5 mm cranks	100.3mm 175 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:http://bombtrack.com/hook-ext-2-2/

Geometry