2015 Niner Bikes ROS 9 Base
- Category
- Hardtail Trail MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Steel
- Fork
- Aluminum
- Suspension
- 140mm fork travel, 30% sag
- Features
- Disc brake
Geometry
Small | Medium | Large | XL | |
Stack | 632mm | 641mm | 655mm | 674mm |
Reach | 386mm | 400mm | 415mm | 428mm |
Stack to Reach Ratio | 1.64:1 | 1.6:1 | 1.58:1 | 1.57:1 |
Seat Tube Length, C-C | 394mm | 431mm | 471mm | 534mm |
Top Tube Length, Effective/Horizontal Center | 581mm | 598mm | 617mm | 636mm |
Head Tube Angle | 67deg | 67deg | 67deg | 67deg |
Seat Tube Angle | 73deg | 73deg | 73deg | 73deg |
Head Tube Length | 99.1mm | 109.2mm | 124.5mm | 144.8mm |
Bottom Bracket Drop | 48.3mm | 48.3mm | 48.3mm | 48.3mm |
Bottom Bracket Height | 322.4mm | 322.4mm | 322.4mm | 322.4mm |
Chainstay Length | 426.7mm | 426.7mm | 426.7mm | 426.7mm |
Chainstay Length Horizontal | 424mm | 424mm | 424mm | 424mm |
Front-Center | 683mm | 701mm | 722mm | 743mm |
Front-Center Horizontal | 680.9mm | 698.7mm | 719mm | 741.9mm |
Wheelbase | 1104.9mm | 1122.7mm | 1143mm | 1165.9mm |
Fork Offset/Rake | 42mm | 42mm | 42mm | 42mm |
Fork Length (Axle-To-Crown) | 385mm | 385mm | 385mm | 385mm |
Trail | 111.7mm very high | 111.7mm very high | 111.7mm very high | 111.7mm very high |
Mechanical Trail | 102.8mm | 102.8mm | 102.8mm | 102.8mm |
Wheel Flop | 40.2mm | 40.2mm | 40.2mm | 40.2mm |
Standover Height | 711.2mm | 734.1mm | 787.4mm | 838.2mm |
Tire to Pedal Spindle | 142.3mm 170 mm cranks | 160.3mm 170 mm cranks | 181.3mm 170 mm cranks | 202.3mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 152.4mm 170 mm cranks | 152.4mm 170 mm cranks | 152.4mm 170 mm cranks | 152.4mm 170 mm cranks |
Base Build
Small | Medium | Large | XL | |
Wheel Size | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD | 700C/29 in 622 mm BSD |
Tire Width | 2.35in | 2.35in | 2.35in | 2.35in |
Tire Outer Diameter | 741.4mm | 741.4mm | 741.4mm | 741.4mm |
Bike Length with Tires | 1846.3mm | 1864.1mm | 1884.4mm | 1907.2mm |
Stack and Reach vs. Category Trend
Very Upright
Somewhat Upright
Average
Somewhat Aggressive
Very Aggressive
The Bike Insights Upright/Aggressive scale is based on analysis of a bike’s proportions relative to similar sized bikes in the same category.
Learn more about the Upright/Aggressive ScaleCategory Trend
Hardtail Trail MTBSource:https://www.vitalmtb.com/product/guide/Bikes,3/Niner/ROS-9-with-X1,14873