2023 Soma Fabrications Jawbone A-Type Base 52cm
Build
650B/27.5 in × 2.2 in
Insights
Average stack and reach vs trend of off-road touring bikes
Design deviates from other sizes of Soma Fabrications Jawbone A-Type
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 582mm |
| Reach | 369mm |
| Stack to Reach Ratio | 1.58:1 |
| Seat Tube Length, C-T | 450mm |
| Top Tube Length, Actual C-C | 539mm |
| Top Tube Slope | 16.9deg |
| Head Tube Angle | 70.5deg |
| Seat Tube Angle | 73.8deg |
| Head Tube Length | 142mm |
| Bottom Bracket Drop | 66mm |
| Bottom Bracket Height | 281.9mm |
| Chainstay Length | 445mm |
| Chainstay Length Horizontal | 440.1mm |
| Front-Center | 608mm |
| Front-Center Horizontal | 601.9mm |
| Wheelbase | 1042mm |
| Fork Offset/Rake | 50mm |
| Fork Length (Axle-To-Crown) | 420mm |
| Trail | 70.2mm high |
| Mechanical Trail | 66.1mm |
| Wheel Flop | 22.1mm |
| Standover Height | 758mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 90.1mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 111.9mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.2in |
| Tire Outer Diameter | 695.8mm |
| Bike Length with Tires | 1737.8mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Disc |
Source:https://www.somafab.com/archives/product/jawbone-frame-a-type