Norco Aurum HSP C1 27.5

2021 MountainDownhill Manufacturer page

Norco Aurum HSP C1 27.5, color Electric Blue / Cool Grey

Last known price: $7,699

Prices shown first for United States
Wheels: 27.5″
Drivetrain: 1 × 7 34t / 10–24t
Gear range: 240%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

XS 154.9–166
SM/MD 163–175
MD/LG 172–184
XL 181–191.8

Components

21 of 22 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

High Single Pivot DH Frame 29 M/L, L/XL, 27.5 XS/S, S/M, M/L, L/XL Not identified

Suspension

2 parts

Drivetrain

8 parts

Brakes

1 part

Brakes
- SRAM Code RSC

Wheels and tires

4 parts

Cockpit and contact points

6 parts

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size SM/MD

Table

Reach 425mm

Stack 599mm

Wheelbase 1203mm

Head angle 62.5°

Seat angle 73.5°

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	405	425	445	465
Stackmm	592	599	606	612
Top tube lengthmm	571	603	635	667
Seat tube lengthmm	400	415	430	445
Head tube lengthmm	100	107.5	115	122.5
Head tube angle	62.5°	62.5°	62.5°	62.5°
Seat tube angle	74.4°	73.5°	72.7°	71.8°
Chainstay lengthmm	400	410	420	430
Wheelbasemm	1169	1203	1237	1270
Front centermm	769	793	817	840
Bottom bracket dropmm	5	5	5	5
Bottom bracket heightmm	350	250	350	350
Standover heightmm	631	632	635	638
Fork rakemm	52	52	52	52
Trailmm	126	126	126	126
Stack/reach ratio	1.46	1.41	1.36	1.32
Suspension and parts
Crank lengthmm	165	165	165	165
Stem lengthmm	50	50	50	50

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

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Carbon

Suspension

Suspension configuration: Full suspension

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 34
Largest chainring: 34
Rear sprockets: 7
Smallest sprocket: 10
Largest sprocket: 24
Lowest gear: 39.0 in
Highest gear: 93.5 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
Rear shock spring: Coil
Tire width: 2.5″
Travel: Front: Additional specification: Not available: No
Rear: Additional specification: Not available: No
Wheel material: Aluminum
Wheel size: 27.5″

Technical analysis

2 measures

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

Lowest gear

39.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Downhill Model year: 2021
Sample: 94 bicycles with this information
Coverage: 89.5% of the class

Highest gear

93.5 gear inches

This value is within the central range for this class.

Cohort: Mountain / Downhill Model year: 2021
Sample: 94 bicycles with this information
Coverage: 89.5% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 14.9 km/h
Highest gear: 35.8 km/h

Total gear range 240%

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: 39.0–93.5 gear inches
Class reference (p10–p90): 30.9–103.9 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Downhill Model year: 2021
Lowest gear: 94 bicycles with this information, 89.5% of the class
Highest gear: 94 bicycles with this information, 89.5% 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 2021 builds
Specification	This bicycle Norco Aurum HSP C1 27.5	Norco Aurum A1	Norco Aurum HSP C1 29	Norco Aurum HSP C2 27.5	Norco Aurum HSP C2 29
Frame
Frame material	Carbon	Aluminum	Carbon	Carbon	Carbon
Suspension
Front travel	Not informed	200 mm	Not informed	200 mm	200 mm
Drivetrain
Smallest chainring	34	36	34	34	34
Largest chainring	34	36	34	34	34
Rear sprockets	7	10	7	7	7
Smallest sprocket	10	11	10	11	11
Largest sprocket	24	28	24	25	25
Lowest gear	39.0 in	35.4 in	41.1 in	37.4 in	39.4 in
Highest gear	93.5 in	90.0 in	98.6 in	85.0 in	89.6 in
Other specifications
Fork spring	Air	Air	Air	Not informed	Not informed
Rear shock spring	Coil	Not informed	Coil	Coil	Coil
Wheel size	27.5″	27.5″	29″	27.5″	29″