2024 Soma Fabrications Riff 2.0 Base SM
Build
650B/27.5 in × 2.2 in
Insights
Average stack and reach vs trend of hardtail trail mtb bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 613mm |
| Reach | 410mm |
| Stack to Reach Ratio | 1.5:1 |
| Seat Tube Length, C-T | 390mm |
| Top Tube Length, Actual C-C | 590mm |
| Top Tube Slope | 24.7deg |
| Head Tube Angle | 67.6deg |
| Seat Tube Angle | 73.8deg |
| Head Tube Length | 110mm |
| Bottom Bracket Drop | 45mm |
| Bottom Bracket Height | 302.9mm |
| Chainstay Length | 427mm |
| Chainstay Length Max | 442mm |
| Chainstay Length Horizontal | 424.6mm |
| Chainstay Length Horizontal Max | 439.7mm |
| Front-Center | 692mm |
| Front-Center Horizontal | 691.4mm |
| Wheelbase | 1116mm |
| Wheelbase Max | 1131.1mm |
| Fork Offset/Rake | 43.7mm |
| Fork Length (On-Axis) | 512mm |
| Trail | 96.1mm very high |
| Mechanical Trail | 88.9mm |
| Wheel Flop | 33.9mm |
| Standover Height | 770mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 174.1mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 132.9mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 2.2in |
| Tire Outer Diameter | 695.8mm |
| Bike Length with Tires | 1811.8mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 120mm |
| Suspension Sag | 0% |
| Frame Material | Steel |
| Fork Material | Unknown |
| Brake Type | Disc |
| Features | Single-speed capable |
Source:https://www.somafab.com/archives/product/riff-27-5-hardtail-frame