2021 Soma Fabrications Double Cross Disc 650b 54
Build
650B/27.5 in × 47 mm
Insights
Somewhat upright stack and reach vs trend of cyclocross bikes
Design deviates from other sizes of Soma Fabrications Double Cross
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 592mm |
| Reach | 379mm |
| Stack to Reach Ratio | 1.56:1 |
| Seat Tube Length, C-T | 540mm |
| Top Tube Length, Effective/Horizontal Center | 560mm |
| Top Tube Slope | 8deg |
| Head Tube Angle | 71.5deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 155mm |
| Bottom Bracket Drop | 70mm |
| Bottom Bracket Height | 269mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 419.2mm |
| Front-Center | 604mm |
| Front-Center Horizontal | 599.8mm |
| Wheelbase | 1019mm |
| Fork Offset/Rake | 44mm |
| Trail | 67mm high |
| Mechanical Trail | 63.6mm |
| Wheel Flop | 20.2mm |
| Standover Height | 798.6mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 95mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 99mm |
Disc 650b Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 47mm |
| Tire Outer Diameter | 678mm |
| Bike Length with Tires | 1697mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 173 cm to 180 cm |
Source:https://www.somafab.com/archives/product/double-cross-disc, http://www.somafab.com/archives/product/double-cross-disc