2015 Niner Bikes ROS 9 Base Medium
Build
700C/29 in × 2.35 in
Insights
Very upright stack and reach vs trend of hardtail trail mtb bikes
Design deviates from other sizes of Niner Bikes ROS 9
Stack and Reach vs. Category Trend
View all sizes
Geometry
| Stack | 641mm |
| Reach | 400mm |
| Stack to Reach Ratio | 1.6:1 |
| Seat Tube Length, C-C | 431mm |
| Top Tube Length, Effective/Horizontal Center | 598mm |
| Head Tube Angle | 67deg |
| Seat Tube Angle | 73deg |
| Head Tube Length | 109.2mm |
| Bottom Bracket Drop | 48.3mm |
| Bottom Bracket Height | 322.4mm |
| Chainstay Length | 426.7mm |
| Chainstay Length Horizontal | 424mm |
| Front-Center | 701mm |
| Front-Center Horizontal | 698.7mm |
| Wheelbase | 1122.7mm |
| Fork Offset/Rake | 42mm |
| Fork Length (Axle-To-Crown) | 551mm |
| Trail | 111.7mm very high |
| Mechanical Trail | 102.8mm |
| Wheel Flop | 40.2mm |
| Standover Height | 734.1mm |
| Tire to Pedal Spindle Distance With 170 mm cranks | 160.3mm |
| Pedal Spindle to Ground Clearance With 170 mm cranks | 152.4mm |
Base Build
| Wheel Size | 700C, 29 inch (622mm BSD) |
| Tire Width | 2.35in |
| Tire Outer Diameter | 741.4mm |
| Bike Length with Tires | 1864.1mm |
| Suspension Type | Hardtail (Front suspension) |
| Bar Type | Flat Bar |
| Fork Travel | 140mm |
| Suspension Sag | 30% |
| Frame Material | Steel |
| Fork Material | Aluminum |
| Brake Type | Disc |
Source:https://www.vitalmtb.com/product/guide/Bikes,3/Niner/ROS-9-with-X1,14873