2017 Soma Fabrications b-side Base 18.5"
Build
650B/27.5 in × 2.5 in
Insights
Average stack and reach vs trend of full-suspension 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 | 589mm |
| Reach | 415mm |
| Stack to Reach Ratio | 1.42:1 |
| Seat Tube Length, C-T | 470mm |
| Top Tube Length, Effective/Horizontal Center | 604mm |
| Top Tube Slope | 14.2deg |
| Head Tube Angle | 68deg |
| Seat Tube Angle | 72deg |
| Head Tube Length | 115mm |
| Bottom Bracket Drop | 39mm |
| Bottom Bracket Height | 316.5mm |
| Chainstay Length | 427mm |
| Chainstay Length Horizontal | 425.2mm |
| Front-Center | 681mm |
| Front-Center Horizontal | 671.8mm |
| Wheelbase | 1097mm |
| Fork Offset/Rake | 42mm |
| Trail | 98.3mm very high |
| Mechanical Trail | 91.2mm |
| Wheel Flop | 34.2mm |
| Standover Height | 802.6mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 155.5mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 146.5mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.5in |
| Tire Outer Diameter | 711mm |
| Bike Length with Tires | 1808mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 120mm |
| Suspension Sag | Unknown |
| Frame Material | Unknown |
| Fork Material | Unknown |
| Brake Type | Unknown |
Source:https://www.somafab.com/archives/product/b-side-v-3-27-5-650b, https://www.somafab.com/wp-content/uploads/2011/06/soma_geochart_bside_2017_1.jpg