2023 Bombtrack Bicycle Company Hook EXT-C Complete

Design
Drop Bar, Rigid, non-suspension corrected
Frame
Carbon/Composite
Fork
Carbon/Composite
Features
Disc brake, Single-speed capable
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category
Average stack and reachvs category

Geometry

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, Unknown
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
Effective Seat Tube Angle, Unknown
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
837mm
Tire to Pedal Spindle
88mm
165 mm cranks
90mm
170 mm cranks
92mm
170 mm cranks
95mm
175 mm cranks
110mm
175 mm cranks
Pedal Spindle to Ground Clearance
107mm
165 mm cranks
102mm
170 mm cranks
102mm
170 mm cranks
97mm
175 mm cranks
97mm
175 mm cranks

Complete Build

XS
S
M
L
XL
Wheel Size
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
650B/27.5 in
584 mm BSD
Tire Width
47mm
47mm
47mm
47mm
47mm
Tire Width Max
52mm
52mm
52mm
52mm
52mm
Tire Outer Diameter
678mm
678mm
678mm
678mm
678mm
Bike Length with Tires
1696mm
1703mm
1703mm
1713mm
1728mm
Crank Length
165mm
170mm
170mm
175mm
175mm
Stem Length
80mm
80mm
90mm
100mm
100mm
Stem Angle
-7deg
-7deg
-7deg
-7deg
-7deg

Published Sizing Recommendations

Height
1550 cm
to
1650 cm
1630 cm
to
1730 cm
1710 cm
to
1810 cm
1790 cm
to
1880 cm
1860 cm
to
1950 cm

Stack and Reach vs. Category Trend

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.

Learn more about the Upright/Aggressive Scale
Category Trend
All-road/Gravel
Source:https://www.bombtrack.com/complete-bikes/hook-ext-c