2021 Bombtrack Bicycle Company Hook EXT Base XS
Build
650B/27.5 in × 2 in
Insights
Somewhat upright stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Bombtrack Bicycle Company Hook EXT
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 554mm |
| Reach | 365mm |
| Stack to Reach Ratio | 1.52:1 |
| Seat Tube Length, C-T | 460mm |
| Top Tube Length, Effective/Horizontal HT Top | 519mm |
| Top Tube Slope | 12.8deg |
| Head Tube Angle | 71.5deg |
| Seat Tube Angle | 74.5deg |
| Head Tube Length | 110mm |
| Bottom Bracket Drop | 75mm |
| Bottom Bracket Height | 267.8mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 418.3mm |
| Front-Center | 581mm |
| Front-Center Horizontal | 576.7mm |
| Wheelbase | 995mm |
| Fork Offset/Rake | 48mm |
| Fork Length (Axle-To-Crown) | 398mm |
| Trail | 64.1mm mid/neutral |
| Mechanical Trail | 60.8mm |
| Wheel Flop | 19.3mm |
| Standover Height | 748mm |
| Tire to Pedal Spindle Distance With 165 mm cranks | 73.2mm |
| Pedal Spindle to Ground Clearance With 165 mm cranks | 102.8mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2in |
| Tire Outer Diameter | 685.6mm |
| Bike Length with Tires | 1680.6mm |
| Crank Length | 165mm |
| Handlebar Width | 400mm |
| Stem Length | 80mm |
| Stem Angle | -7deg |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 150 cm to 161 cm |
Source:https://bombtrack.com/2021-hook-ext/