Author Aura XR2

Name: Author Aura XR2
Brand: Author

2026 RoadGravel Manufacturer page

Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 10 42t / 11–48t
Gear range: 436%
Weight: 11.2 kg 24.7 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

50cm 160–170
52cm 168–178
54cm 176–185
56cm 183–193
58cm 190–205

Components

13 of 17 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

triple butted alloy (max. tyre size 45 mm) Not identified

Suspension

1 part

Fork
- Author

Drivetrain

5 parts

Cassette
- Shimano CS-LG300-10 10 speeds
CS-LG300-10
Chain
- KMC XGlide 11 speeds
Crankset
- Shimano Cues
Rear derailleur
- Shimano Cues RD-U6000 11 speeds
RD-U6000
Shifters
- Shimano Cues SL-U6000
SL-U6000

Brakes

1 part

Brakes
- Shimano BR-UR300
BR-UR300

Wheels and tires

5 parts

Front hub

QUANDO Road Disc, 12 x 100 mm thru front axle, 32 holes Not identified
Rear hub

QUANDO Road Disc, 12 x 100 mm thru front axle, 32 holes Not identified
Rims
- Author
Spokes

black stainless steel 2.0 mm Not identified
Tires
- Panaracer

Cockpit and contact points

4 parts

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 54cm

Table

Reach 392mm

Stack 601mm

Wheelbase 1052mm

Head angle 71.0°

Seat angle 73.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 700c wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	371	381	392	402	409
Stackmm	572	588	601	617	638
Top tube lengthmm	530	550	570	590	610
Seat tube lengthmm	500	520	540	560	580
Head tube lengthmm	135	150	165	180	200
Head tube angle	70.5°	71°	71°	71.5°	72°
Seat tube angle	74.5°	74°	73.5°	73°	72.5°
Chainstay lengthmm	435	435	435	435	435
Wheelbasemm	1026	1037	1052	1062	1071
Front centermm	601	612	626	636	645
Bottom bracket dropmm	70	70	69	68	68
Bottom bracket heightmm	279	279	280	281	281
Fork rakemm	45	45	45	45	45
Trailmm	76	72	73	70	66
Stack/reach ratio	1.54	1.54	1.53	1.54	1.56

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

Specifications

Frame and fork

Intended fit: Unisex
Frame material: Aluminum
Fork material: Aluminum
Bicycle weight: 11.2 kg

24.7 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 42
Largest chainring: 42
Rear sprockets: 10
Smallest sprocket: 11
Largest sprocket: 48
Lowest gear: 25.4 in
Highest gear: 110.7 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Rigid seatpost
Shifting: Mechanical

Additional specifications

Tire width: 38c
Wheel material: Aluminum
Wheel size: 700c

Technical analysis

3 measures

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

Lowest gear

25.4 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2026
Sample: 1,455 bicycles with this information
Coverage: 73.2% of the class

Highest gear

110.7 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2026
Sample: 1,455 bicycles with this information
Coverage: 73.2% of the class

Shifting

Mechanical

706 of 1,980 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2026
Sample: 1,980 bicycles with this information
Coverage: 99.6% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.7 km/h
Highest gear: 42.4 km/h

Total gear range 436%

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: 25.4–110.7 gear inches
Class reference (p10–p90): 22.8–127.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2026
Lowest gear: 1455 bicycles with this information, 73.2% of the class
Highest gear: 1455 bicycles with this information, 73.2% 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 2026 builds
Specification	This bicycle Author Aura XR2	Author Aura XR3	Author Aura XR4	Author Aura XR5	Author Aura XR6	Author Aura XR7
Frame
Fork material	Aluminum	Aluminum	Carbon	Carbon	Carbon	Carbon
Bicycle weight	11.2 kg	11.2 kg	10.9 kg	10.3 kg	10.2 kg	9.9 kg
Drivetrain
Front chainrings	1	1	2	1	2	1
Smallest chainring	42	42	32	42	30	42
Largest chainring	42	42	46	42	46	42
Rear sprockets	10	Not informed	Not informed	12	12	12
Smallest sprocket	11	11	11	10	11	10
Largest sprocket	48	50	39	45	36	45
Lowest gear	25.4 in	24.4 in	23.8 in	27.1 in	24.2 in	27.1 in
Highest gear	110.7 in	110.7 in	121.3 in	121.8 in	121.3 in	121.8 in
Other specifications
Tire width	38c	38c	38c	40c	40c	40c

Changes since 2025
Specification	2025 Author Aura XR2	This bicycle Author Aura XR2
Frame
Bicycle weight	10.9 kg	11.2 kg
Drivetrain
Front chainrings	2	1
Smallest chainring	32	42
Largest chainring	48	42
Rear sprockets	9	10
Largest sprocket	32	48
Lowest gear	29.0 in	25.4 in
Highest gear	126.6 in	110.7 in