2025 CHIRU Allure Base M
Build
700C/29 in × 30 mm
Insights
Very aggressive stack and reach vs trend of all-road/gravel bikes
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 563mm |
| Reach | 406mm |
| Stack to Reach Ratio | 1.39:1 |
| Seat Tube Length, Unknown | 475mm |
| Top Tube Length, Effective/Horizontal Center | 565mm |
| Top Tube Slope | 11.2deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 73.8deg |
| Head Tube Length | 160mm |
| Bottom Bracket Drop | 73mm |
| Bottom Bracket Height | 268mm |
| Chainstay Length | 420mm |
| Chainstay Length Horizontal | 413.6mm |
| Front-Center | 637.6mm |
| Front-Center Horizontal | 633.4mm |
| Wheelbase | 1047mm |
| Fork Offset/Rake | 47mm |
| Fork Length (Axle-To-Crown) | 380mm |
| Trail | 67.7mm high |
| Mechanical Trail | 64mm |
| Wheel Flop | 20.8mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 126.6mm |
| 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 | 1729mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Titanium |
| Fork Material | Carbon/Composite |
| Brake Type | Disc |
Published Sizing Recommendations
| Height | 174 cm to 183 cm |
Source:https://www.chirubikes.com/en/kit-cadre/allure/