2025 Ridley Bikes Astr Essential S
Build
700C/29 in × 47 mm
Insights
Somewhat aggressive stack and reach vs trend of all-road/gravel bikes
Stack and Reach vs. Category Trend
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Geometry
| Stack | 550mm |
| Reach | 392mm |
| Stack to Reach Ratio | 1.4:1 |
| Seat Tube Length, C-T | 500mm |
| Top Tube Length, Effective/Horizontal Center | 550mm |
| Top Tube Slope | 7.5deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 74deg |
| Head Tube Length | 130mm |
| Bottom Bracket Drop | 75mm |
| Bottom Bracket Height | 283mm |
| Chainstay Length | 425mm |
| Chainstay Length Horizontal | 418.3mm |
| Front-Center | 613.3mm |
| Front-Center Horizontal | 608.7mm |
| Wheelbase | 1027mm |
| Fork Offset/Rake | 50.2mm |
| Trail | 70.2mm high |
| Mechanical Trail | 66.3mm |
| Wheel Flop | 21.6mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 85.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 113mm |
Essential Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 47mm |
| Tire Outer Diameter | 716mm |
| Bike Length with Tires | 1743mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Source:https://www.ridley-bikes.com/en_AU/bikes/SBIASTRID078