2011 v2.0 Niner Bikes AIR 9 Base Small
Build
700C/29 in × 2.4 in
Insights
Average stack and reach vs trend of hardtail cross-country mtb bikes
Suspension sag unknown
Geometry may mis-represent actual riding geometry
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 608mm |
| Reach | 404mm |
| Stack to Reach Ratio | 1.5:1 |
| Seat Tube Length, Unknown | 394mm |
| Top Tube Length, Effective/Horizontal Unknown | 590mm |
| Top Tube Slope | 24deg |
| Head Tube Angle | 71deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 105mm |
| Bottom Bracket Drop | 54mm |
| Bottom Bracket Height | 318mm |
| Chainstay Length | 439mm |
| Chainstay Length Horizontal | 435.7mm |
| Front-Center | 655mm |
| Front-Center Horizontal | 652.3mm |
| Wheelbase | 1088mm |
| Fork Offset/Rake | 44mm |
| Trail | 81.5mm very high |
| Mechanical Trail | 77.1mm |
| Wheel Flop | 25.1mm |
| Standover Height | 724mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 113mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 148mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.4in |
| Tire Outer Diameter | 743.9mm |
| Bike Length with Tires | 1831.9mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 100mm |
| Suspension Sag | Unknown |
| Frame Material | Aluminum |
| Fork Material | Unknown |
| Brake Type | Disc |
Source:Niner encyclopedia