2017 Ridley Bikes Helium X Base S
Build
700C/29 in × 25 mm
Insights
Average stack and reach vs trend of performance road bikes
Design deviates from other sizes of Ridley Bikes Helium X
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 542mm |
| Reach | 384mm |
| Stack to Reach Ratio | 1.41:1 |
| Seat Tube Length, C-T | 510mm |
| Seat Tube Length, C-C | 470mm |
| Top Tube Length, Effective/Horizontal Center | 545mm |
| Top Tube Length, Actual C-C | 529mm |
| Top Tube Slope | 7.6deg |
| Head Tube Angle | 73deg |
| Seat Tube Angle | 73.5deg |
| Head Tube Length | 142mm |
| Bottom Bracket Drop | 66mm |
| Bottom Bracket Height | 270mm |
| Chainstay Length | 405mm |
| Chainstay Length Horizontal | 399.6mm |
| Front-Center | 581.2mm |
| Front-Center Horizontal | 577.4mm |
| Wheelbase | 977mm |
| Fork Offset/Rake | 45.8mm |
| Trail | 54.8mm mid/neutral |
| Mechanical Trail | 52.4mm |
| Wheel Flop | 15.3mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 75.2mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 100mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 25mm |
| Tire Outer Diameter | 672mm |
| Bike Length with Tires | 1649mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | Rim |
Source:ridley