2021 Bombtrack Bicycle Company Hook EXT-C Complete

	XS	S	M	L	XL
Stack	537mm	558mm	568mm	591mm	610mm
Reach	371mm	375mm	376mm	384mm	394mm
Stack to Reach Ratio	1.45:1	1.49:1	1.51:1	1.54:1	1.55:1
Seat Tube Length, C-T	490mm	520mm	540mm	560mm	580mm
Top Tube Length, Effective/Horizontal Center	520mm	535mm	550mm	565mm	580mm
Top Tube Slope	7.4deg	6.4deg	5.5deg	5.8deg	5.6deg
Head Tube Angle	70.5deg	71deg	71.5deg	72deg	72deg
Seat Tube Angle	74.5deg	74deg	73deg	73deg	73deg
Head Tube Length	120mm	140mm	150mm	170mm	190mm
Bottom Bracket Drop	67mm	67mm	67mm	67mm	67mm
Bottom Bracket Height	272mm	272mm	272mm	272mm	272mm
Chainstay Length	435mm	435mm	435mm	435mm	435mm
Chainstay Length Horizontal	429.8mm	429.8mm	429.8mm	429.8mm	429.8mm
Front-Center	592mm	599mm	601mm	609mm	624mm
Front-Center Horizontal	588.2mm	595.2mm	595.2mm	605.2mm	620.2mm
Wheelbase	1018mm	1025mm	1025mm	1035mm	1050mm
Fork Offset/Rake	48mm	48mm	48mm	48mm	48mm
Fork Length (Axle-To-Crown)	398mm	398mm	398mm	398mm	398mm
Trail	69.1mm high	66mm high	62.8mm mid/neutral	59.7mm mid/neutral	59.7mm mid/neutral
Mechanical Trail	65.2mm	62.4mm	59.6mm	56.8mm	56.8mm
Wheel Flop	21.8mm	20.3mm	18.9mm	17.5mm	17.5mm
Standover Height	759mm	783mm	798mm	818mm	937mm
Tire to Pedal Spindle	88mm 165 mm cranks	90mm 170 mm cranks	92mm 170 mm cranks	97.5mm 172.5 mm cranks	110mm 175 mm cranks
Pedal Spindle to Ground Clearance	107mm 165 mm cranks	102mm 170 mm cranks	102mm 170 mm cranks	99.5mm 172.5 mm cranks	97mm 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:https://bombtrack.com/2021-hook-ext-c/

Geometry