2024 Soma Fabrications Riff 2.0 Base XS
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 | 603mm |
| Reach | 390mm |
| Stack to Reach Ratio | 1.55:1 |
| Seat Tube Length, C-T | 360mm |
| Top Tube Length, Actual C-C | 568mm |
| Top Tube Slope | 27.7deg |
| Head Tube Angle | 67.6deg |
| Seat Tube Angle | 73.8deg |
| Head Tube Length | 100mm |
| 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 | 669mm |
| Front-Center Horizontal | 668.4mm |
| Wheelbase | 1093mm |
| Wheelbase Max | 1108.1mm |
| Fork Offset/Rake | 44.7mm |
| Fork Length (On-Axis) | 512mm |
| Trail | 95mm very high |
| Mechanical Trail | 87.8mm |
| Wheel Flop | 33.5mm |
| Standover Height | 752mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 151.1mm |
| 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 | 1788.8mm |
| 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