2017 Bombtrack Bicycle Company Hook EXT Base

Category
Touring
Design
Drop Bar, Rigid, non-suspension corrected
Frame
Steel
Fork
Carbon/Composite
Features
Disc brake
Average stack and reachvs category
Average stack and reachvs category
Somewhat aggressive stack and reachvs category
Somewhat aggressive stack and reachvs category

Geometry

S
M
L
XL
Stack
544mm
566mm
587mm
608mm
Reach
370mm
380mm
390mm
400mm
Stack to Reach Ratio
1.47:1
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
558mm
575mm
591mm
Top Tube Slope
6.3deg
5.4deg
4.4deg
3.5deg
Head Tube Angle
70.3deg
71deg
72deg
72.5deg
Seat Tube Angle
72.5deg
72.5deg
72.5deg
72.5deg
Head Tube Length
110mm
131mm
149mm
169mm
Bottom Bracket Drop
70mm
70mm
70mm
70mm
Bottom Bracket Height
267mm
267mm
267mm
267mm
Chainstay Length
425mm
425mm
425mm
425mm
Chainstay Length Max
425mm
425mm
425mm
425mm
Chainstay Length Horizontal
419.2mm
419.2mm
419.2mm
419.2mm
Chainstay Length Horizontal Max
419.2mm
419.2mm
419.2mm
419.2mm
Front-Center
592mm
608.8mm
608.8mm
620.8mm
Front-Center Horizontal
587.8mm
604.8mm
604.8mm
616.8mm
Wheelbase
1007mm
1024mm
1024mm
1036mm
Wheelbase Max
1007mm
1024mm
1024mm
1036mm
Fork Offset/Rake
45.3mm
51.1mm
44.5mm
45mm
Trail
72.6mm
high
62mm
mid/​neutral
62.7mm
mid/​neutral
59.1mm
mid/​neutral
Mechanical Trail
68.3mm
58.6mm
59.6mm
56.4mm
Wheel Flop
23mm
19.1mm
18.4mm
16.9mm
Standover Height
765mm
790mm
815mm
840mm
Tire to Pedal Spindle
85mm
170 mm cranks
101.8mm
170 mm cranks
101.8mm
170 mm cranks
113.8mm
170 mm cranks
Pedal Spindle to Ground Clearance
97mm
170 mm cranks
97mm
170 mm cranks
97mm
170 mm cranks
97mm
170 mm cranks

Base Build

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
Tire Width
45mm
45mm
45mm
45mm
Tire Width Max
45mm
45mm
45mm
45mm
Tire Outer Diameter
674mm
674mm
674mm
674mm
Bike Length with Tires
1681mm
1698mm
1698mm
1710mm

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
Touring
Source:Bike Counterculture Geometry Database