Niner SIR 9 - 4-Star - 27.5+ X01 Eagle

Name: Niner SIR 9 - 4-Star - 27.5+ X01 Eagle
Brand: Niner

2019 MountainTrail Manufacturer page

Last known price: $5,200

Prices shown first for United States
Fork travel: 120 mm
Wheels: 27.5″, 29″
Drivetrain: 1 × 12 32t / 10–50t
Gear range: 500%
Weight: 11.6 kg 25.6 lb · Reference configuration not specified
Frame: Steel
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 158–171
SM 158–171
MD 168–180
MD 168–180
LG 178–189
LG 178–189
XL 186–199
XL 186–199

Components

17 of 19 identified

Parts found in a manufacturer catalog show their brand, model and key numbers, and the steps show how precisely they are identified: brand, series, model, or the exact product. The info button has every detail and the text the manufacturer published.

Frame and fork

1 part

Frame

Reynolds 853 air hardened steel, welded Not identified

Suspension

2 parts

Fork
- Fox 34
Rear shock

None

Drivetrain

7 parts

Bottom bracket

73mm PF30 BB Shell (Adapters Required For BSA Type BBs); compatible with Biocentric 30 BB Not identified
Cassette
- SRAM XG-1295 Eagle 12 speeds 10–50t
XG-1295
Chain
- SRAM X01 Eagle 12 speeds
Crankset
- SRAM X1 32t
Front derailleur

None
Rear derailleur
- SRAM X01 Eagle 12 speeds
Shifters
- SRAM X01 Eagle Trigger 12 speeds

Brakes

3 parts

Wheels and tires

2 parts

Cockpit and contact points

6 parts

Sizes and geometry

8 sizes

Enter your height to highlight matching ranges.

Size Reported by the manufacturer

Geometry not published

The manufacturer lists these sizes without frame measurements, so there is no drawing or geometry table.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Steel
Bicycle weight: 11.6 kg

25.6 lb

Suspension

Suspension configuration: Hardtail
Front travel: 120 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 50
Lowest gear: 18.6 in
Highest gear: 92.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: PF30
Fork spring: Air
Tire clearance: Maximum tire width: 2.4″
Tire width: 2.4″
Wheel material: Aluminum
Wheel size: 27.5″, 29″

Technical analysis

4 measures

How these figures sit among bicycles of the same class and model year. Context, not a ranking.

Front travel

120 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2019
Sample: 982 bicycles with this information
Coverage: 96.6% of the class

Lowest gear

18.6 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2019
Sample: 964 bicycles with this information
Coverage: 94.8% of the class

Highest gear

92.8 gear inches

This value is above the central range for this class.

Cohort: Mountain / Trail Model year: 2019
Sample: 964 bicycles with this information
Coverage: 94.8% of the class

Shifting

Mechanical

34 of 1,016 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2019
Sample: 1,016 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.1 km/h
Highest gear: 35.5 km/h

Total gear range 500%

Technical details and class reference

These speeds describe the gearing at the selected cadence, not how fast you can ride.
Calculated from published gear-inch values and their wheel-size assumptions.
These gearing values describe the bicycle, not a selected frame size.
A 100% range means one ratio; 500% means the highest ratio is five times the lowest.
For e-bikes, motor assistance cutoff is not represented.

Gear-inch range

Lower gear-inch values travel less distance per pedal revolution; higher values travel farther.

This bicycle: 18.6–92.8 gear inches
Class reference (p10–p90): 16.5–92.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2019
Lowest gear: 964 bicycles with this information, 94.8% of the class
Highest gear: 964 bicycles with this information, 94.8% of the class

Lineup changes

The published facts that differ across this family's builds and from the same model a year earlier. Missing information never counts as zero.

Differences across 2019 builds

Differences across 2019 builds
Specification	This bicycle Niner SIR 9 - 4-Star - 27.5+ X01 Eagle	Niner SIR 9 - 2-Star - 27.5+ NX Eagle	Niner SIR 9 - 2-Star - 29 NX Eagle	Niner SIR 9 - 3-Star - 27.5+ GX Eagle	Niner SIR 9 - 3-Star - 29 GX Eagle	Niner SIR 9 - 4-Star - 29 X01 Eagle
Frame
Bicycle weight	11.6 kg	12.7 kg	12.7 kg	12 kg	12 kg	11.6 kg
Drivetrain
Smallest sprocket	10	11	11	10	10	10
Highest gear	92.8 in	84.4 in	84.4 in	92.8 in	92.8 in	92.8 in
Cockpit
Seatpost	Dropper seatpost	Rigid seatpost	Rigid seatpost	Dropper seatpost	Dropper seatpost	Dropper seatpost