2012 Niner Bikes SIR 9 Frameset (29" wheels)
- Category
- Hardtail Trail MTB
- Design
- Flat Bar, Hardtail (Front suspension)
- Frame
- Steel
- Suspension
- 80mm fork travel, 20% sag
- Features
- Disc brake, Single-speed capable
Geometry
SM | MD | LG | XL | |
Stack | 620mm | 637mm | 652mm | 671mm |
Reach | 395mm | 409mm | 423mm | 436mm |
Stack to Reach Ratio | 1.57:1 | 1.56:1 | 1.54:1 | 1.54:1 |
Seat Tube Length, C-T | 393mm | 419mm | 483mm | 546mm |
Top Tube Length, Effective/Horizontal HT Top | 592mm | 609mm | 628mm | 647mm |
Top Tube Slope | 25.6deg | 24deg | 18.6deg | 14deg |
Head Tube Angle | 69.8deg | 70.3deg | 70.3deg | 70.3deg |
Seat Tube Angle | 73.3deg | 73.3deg | 73.3deg | 73.3deg |
Head Tube Length | 100mm | 110mm | 125mm | 145mm |
Bottom Bracket Drop | 49mm | 49mm | 49mm | 49mm |
Bottom Bracket Height | 323mm | 323mm | 323mm | 323mm |
Chainstay Length | 440mm | 440mm | 440mm | 440mm |
Chainstay Length Horizontal | 437.3mm | 437.3mm | 437.3mm | 437.3mm |
Front-Center | 651mm | 664mm | 684mm | 701mm |
Front-Center Horizontal | 647.7mm | 658.7mm | 677.7mm | 697.7mm |
Wheelbase | 1085mm | 1096mm | 1115mm | 1135mm |
Fork Offset/Rake | 51mm | 51mm | 51mm | 51mm |
Trail | 82.5mm very high | 79mm high | 79mm high | 79mm high |
Mechanical Trail | 77.4mm | 74.4mm | 74.4mm | 74.4mm |
Wheel Flop | 26.7mm | 25.1mm | 25.1mm | 25.1mm |
Standover Height | 716mm | 736mm | 790mm | 842mm |
Tire to Pedal Spindle | 109mm 170 mm cranks | 122mm 170 mm cranks | 142mm 170 mm cranks | 159mm 170 mm cranks |
Pedal Spindle to Ground Clearance | 153mm 170 mm cranks | 153mm 170 mm cranks | 153mm 170 mm cranks | 153mm 170 mm cranks |
Frameset (29" wheels) Build
SM | MD | LG | 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 | 2.4in | 2.4in | 2.4in | 2.4in |
Tire Width Max | 2.4in | 2.4in | 2.4in | 2.4in |
Tire Outer Diameter | 743.9mm | 743.9mm | 743.9mm | 743.9mm |
Bike Length with Tires | 1828.9mm | 1839.9mm | 1858.9mm | 1878.9mm |
Stem Length | 40mm | 40mm | 40mm | 40mm |
Published Sizing Recommendations
Height | 5 ft 3 in to 5 ft 9 in | 5 ft 8 in to 6 ft 0 in | 5 ft 11 in to 6 ft 3 in | 6 ft 3 in to 6 ft 7 in |
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://reviews.mtbr.com/new-niner-s-i-r-9-and-imba-limited-edition-auction