2017 Aventon Bikes Ultro Base X-Small (fits like 49cm)
Build
700C/29 in × 23 mm
Insights
Average stack and reach vs trend of track/fixed-gear bikes
Design deviates from other sizes of Aventon Bikes Ultro
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 502mm |
| Reach | 385mm |
| Stack to Reach Ratio | 1.3:1 |
| Seat Tube Length, C-T | 465mm |
| Top Tube Length, Effective/Horizontal Center | 515mm |
| Top Tube Slope | 5.9deg |
| Head Tube Angle | 72deg |
| Seat Tube Angle | 75.5deg |
| Head Tube Length | 113mm |
| Bottom Bracket Drop | 56mm |
| Bottom Bracket Height | 278mm |
| Chainstay Length | 388mm |
| Chainstay Length Horizontal | 383.9mm |
| Front-Center | 569.8mm |
| Front-Center Horizontal | 567.1mm |
| Wheelbase | 951mm |
| Fork Offset/Rake | 35mm |
| Trail | 71.7mm high |
| Mechanical Trail | 68.2mm |
| Wheel Flop | 21.1mm |
| Standover Height | 749mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 65.8mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 108mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 23mm |
| Tire Outer Diameter | 668mm |
| Bike Length with Tires | 1619mm |
| Suspension Type | Rigid, non-suspension corrected |
| Bar Type | Drop Bar |
| Frame Material | Carbon/Composite |
| Fork Material | Carbon/Composite |
| Brake Type | N/A |
Source:https://sandiegocyclery.com/shop/fixed-gear/track-frames-forks/aventon-frames/aventon-ultro/