2025 CHIRU Allure Base S
Build
700C/29 in × 30 mm
Insights
Somewhat aggressive stack and reach vs trend of all-road/gravel bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 547mm |
| Reach | 392mm |
| Stack to Reach Ratio | 1.4:1 |
| Seat Tube Length, Unknown | 450mm |
| Top Tube Length, Effective/Horizontal Center | 545mm |
| Top Tube Slope | 12.5deg |
| Head Tube Angle | 70.5deg |
| Seat Tube Angle | 73.8deg |
| Head Tube Length | 145mm |
| Bottom Bracket Drop | 73mm |
| Bottom Bracket Height | 268mm |
| Chainstay Length | 420mm |
| Chainstay Length Horizontal | 413.6mm |
| Front-Center | 615.7mm |
| Front-Center Horizontal | 611.4mm |
| Wheelbase | 1025mm |
| Fork Offset/Rake | 47mm |
| Fork Length (Axle-To-Crown) | 380mm |
| Trail | 70.9mm high |
| Mechanical Trail | 66.8mm |
| Wheel Flop | 22.3mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 104.7mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 98mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 30mm |
| Tire Outer Diameter | 682mm |
| Bike Length with Tires | 1707mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Titanium |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 165 cm to 173 cm |
Source:https://www.chirubikes.com/en/kit-cadre/allure/