2023 Soma Fabrications Jawbone A-Type Base 58cm
Build
700C/29 in × 2.2 in
Insights
Somewhat upright 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 | 637mm |
| Reach | 388mm |
| Stack to Reach Ratio | 1.64:1 |
| Seat Tube Length, C-T | 545mm |
| Top Tube Length, Actual C-C | 583mm |
| Top Tube Slope | 12deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 200mm |
| Bottom Bracket Drop | 72mm |
| Bottom Bracket Height | 294.9mm |
| Chainstay Length | 445mm |
| Chainstay Length Horizontal | 439.1mm |
| Front-Center | 640mm |
| Front-Center Horizontal | 634.9mm |
| Wheelbase | 1074mm |
| Fork Offset/Rake | 50mm |
| Fork Length (Axle-To-Crown) | 420mm |
| Trail | 73.5mm high |
| Mechanical Trail | 69.4mm |
| Wheel Flop | 22.6mm |
| Standover Height | 844mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 103.1mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 124.9mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.2in |
| Tire Outer Diameter | 733.8mm |
| Bike Length with Tires | 1807.8mm |
| 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