2019 Soma Fabrications Rush Base 55
Build
700C/29 in × 23 mm
Insights
Somewhat aggressive stack and reach vs trend of track/fixed-gear bikes
Stack and Reach vs. Category Trend
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Geometry
| Stack | 534mm |
| Reach | 409mm |
| Stack to Reach Ratio | 1.31:1 |
| Seat Tube Length, C-T | 550mm |
| Top Tube Length, Effective/Horizontal Center | 551mm |
| Top Tube Slope | 0.2deg |
| Head Tube Angle | 74.3deg |
| Seat Tube Angle | 75.3deg |
| Head Tube Length | 130mm |
| Bottom Bracket Drop | 58mm |
| Bottom Bracket Height | 276mm |
| Chainstay Length | 388mm |
| Chainstay Length Horizontal | 383.6mm |
| Front-Center | 585mm |
| Front-Center Horizontal | 582.4mm |
| Wheelbase | 966mm |
| Fork Offset/Rake | 38mm |
| Fork Length (Axle-To-Crown) | 365mm |
| Trail | 54.4mm mid/neutral |
| Mechanical Trail | 52.4mm |
| Wheel Flop | 14.2mm |
| Standover Height | 807.7mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 81mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 106mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 23mm |
| Tire Outer Diameter | 668mm |
| Bike Length with Tires | 1634mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Rim |
| Features | Single-speed capable |
Source:https://www.somafab.com/archives/product/rush