2025 Knightwood Rune Bicycles gravel Base S
Build
650B/27.5 in × 48 mm
Insights
Average stack and reach vs trend of all-road/gravel bikes
Design deviates from other sizes of Rune Bicycles gravel
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 546.9mm |
| Reach | 367.8mm |
| Stack to Reach Ratio | 1.49:1 |
| Seat Tube Length, C-C | 520mm |
| Top Tube Length, Effective/Horizontal Center | 540.4mm |
| Top Tube Length, Actual C-C | 535mm |
| Top Tube Slope | 2deg |
| Head Tube Angle | 72deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 135mm |
| Bottom Bracket Drop | 65mm |
| Bottom Bracket Height | 275mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 420mm |
| Front-Center | 585.8mm |
| Front-Center Horizontal | 582.2mm |
| Wheelbase | 1002.2mm |
| Fork Offset/Rake | 55mm |
| Fork Length (Axle-To-Crown) | 380mm |
| Trail | 52.6mm mid/neutral |
| Mechanical Trail | 50.1mm |
| Wheel Flop | 15.5mm |
| Standover Height | 801.4mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 75.8mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 105mm |
Base Build
| Wheel Size | 650B, 27.5 inch (584mm BSD) |
| Tire Width | 48mm |
| Tire Outer Diameter | 680mm |
| Bike Length with Tires | 1682.2mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Steel |
| Fork Material | Steel |
| Brake Type | Rim |
| Features | Single-speed capable |
Source:www.runebicycles.com