Norco Aurum C7.3

Name: Norco Aurum C7.3
Brand: Norco

2017 MountainDownhill

Last known price: $3,999

Prices shown first for United States
Travel: 200 / 200 mm Fork / rear shock
Wheels: 27.5″
Drivetrain: 1 × 7 36t / 11–25t
Gear range: 227%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

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

Components

16 of 21 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

Aurum carbon / alloy 27.5 Not identified

Suspension

2 parts

Drivetrain

8 parts

Bottom bracket

Comes with crank Not identified
Cassette
- SRAM PG-720 7 speeds 11–25t
PG-720
Chain
- SRAM PC-1110 11 speeds
PC-1110
Chain tensioner
- e*thirteen
Crankset
- Race Face 36t
Front derailleur

None
Rear derailleur
- SRAM GX
Shifters

None

Brakes

3 parts

Wheels and tires

4 parts

Front hub

DT 370 front 20x110mm Not identified
Rear hub

DT 370 rear hub 142x12 mm Not identified
Rims
- WTB
Tires
- Maxxis Minion

Cockpit and contact points

7 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 413mm

Stack 611mm

Wheelbase 1211mm

Head angle 63.0°

Seat angle 75.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 27.5″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 4 published sizes

Complete manufacturer geometry by size
Measurement
Frame
Reachmm	393	413	432	452
Stackmm	602	611	620	629
Top tube lengthmm	539	571	603	635
Seat tube lengthmm	400	420	440	460
Head tube lengthmm	100	110	120	130
Head tube angle	63°	63°	63°	63°
Seat tube angle	76.4°	75.5°	74.64°	73.8°
Chainstay lengthmm	425	435	445	455
Wheelbasemm	1177	1211	1245	1280
Front centermm	752	776	801	825
Bottom bracket dropmm	12	12	12	12
Bottom bracket heightmm	343	343	343	343
Standover heightmm	737	737	742	748
Fork rakemm	52	52	52	52
Trailmm	123	123	123	123
Stack/reach ratio	1.53	1.48	1.44	1.39
Suspension and parts
Front travelmm	200	200	200	200
Rear travelmm	200	200	200	200
Crank lengthmm	165	165	165	165
Handlebar widthmm	800	800	800	800
Stem lengthmm	50	50	50	50

Not published by the manufacturer: Stem angle, Seatpost length and Dropper post travel.

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon

Suspension

Suspension configuration: Full suspension
Front travel: 200 mm
Rear travel: 200 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 36
Largest chainring: 36
Rear sprockets: 7
Smallest sprocket: 11
Largest sprocket: 25
Lowest gear: 39.6 in
Highest gear: 90.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Fork spring: Air
Tire width: 2.4″
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

4 measures

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

Front travel

200 mm

This value is within the central range for this class.

Cohort: Mountain / Downhill Model year: 2017
Sample: 40 bicycles with this information
Coverage: 85.1% of the class

Rear travel

200 mm

This value is within the central range for this class.

Cohort: Mountain / Downhill Model year: 2017
Sample: 38 bicycles with this information
Coverage: 80.8% of the class

Lowest gear

39.6 gear inches

This value is within the central range for this class.

Cohort: Mountain / Downhill Model year: 2017
Sample: 39 bicycles with this information
Coverage: 82.9% of the class

Highest gear

90.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Downhill Model year: 2017
Sample: 39 bicycles with this information
Coverage: 82.9% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 15.2 km/h
Highest gear: 34.5 km/h

Total gear range 227%

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: 39.6–90.0 gear inches
Class reference (p10–p90): 33.4–95.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Downhill Model year: 2017
Lowest gear: 39 bicycles with this information, 82.9% of the class
Highest gear: 39 bicycles with this information, 82.9% 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 2017 builds
Specification	This bicycle Norco Aurum C7.3	Norco Aurum A7.1	Norco Aurum A7.2	Norco Aurum C7.1	Norco Aurum C7.2
Frame
Frame material	Carbon	Aluminum	Aluminum	Carbon	Carbon
Drivetrain
Smallest chainring	36	36	36	34	36
Largest chainring	36	36	36	34	36
Smallest sprocket	11	11	11	10	10
Largest sprocket	25	25	25	24	24
Lowest gear	39.6 in	39.6 in	39.6 in	39.0 in	41.3 in
Highest gear	90.0 in	90.0 in	90.0 in	93.5 in	99.0 in
Other specifications
Fork spring	Air	Air	Not informed	Air	Air
Tire width	2.4″	2.5″	2.35″	2.35″	2.35″
Bottom bracket standard	Not informed	BSA	BSA	Not informed	Not informed

Changes since 2016
Specification	2016 Norco Aurum C7.3	This bicycle Norco Aurum C7.3
Drivetrain
Smallest sprocket	Not informed	11
Largest sprocket	Not informed	25
Lowest gear	Not informed	39.6 in
Highest gear	Not informed	90.0 in
Other specifications
Bottom bracket standard	BB86/BB92	Not informed
Tire width	Not informed	2.4″