2012 Soma Fabrications B-Sde Base XL (20.5")
Build
650B/27.5 in × 2.1 in
Insights
Average stack and reach vs trend of hardtail cross-country mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 625mm |
| Reach | 429.6mm |
| Stack to Reach Ratio | 1.45:1 |
| Seat Tube Length, C-T | 520.7mm |
| Top Tube Length, Effective/Horizontal Unknown | 620mm |
| Top Tube Length, Actual C-C | 595mm |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 125mm |
| Bottom Bracket Drop | 50mm |
| Bottom Bracket Height | 295.3mm |
| Chainstay Length | 427mm |
| Chainstay Length Horizontal | 424.1mm |
| Front-Center | 672.8mm |
| Front-Center Horizontal | 670.9mm |
| Wheelbase | 1095mm |
| Fork Offset/Rake | 41mm |
| Fork Length (Axle-To-Crown) | 479mm |
| Trail | 75.6mm high |
| Mechanical Trail | 71.4mm |
| Wheel Flop | 23.3mm |
| Standover Height | 817.9mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 157.5mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 125.3mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.1in |
| Tire Outer Diameter | 690.7mm |
| Bike Length with Tires | 1785.7mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 100mm |
| Suspension Sag | Unknown |
| Frame Material | Steel |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:https://www.somafab.com/archives/product/b-side