ARC8 Eero GRX 1x12

2024 RoadGravel Manufacturer page

Price: Not published

Prices shown first for United States
Europe: €4,399 Last known price
Suspension: Rigid
Wheels: 700c
Drivetrain: 1 × 12 42t / 11–51t
Gear range: 464%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM 170–177
MD 174–182
LG 179–188
XL 186+

Components

10 of 16 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

ARC8 Eero Carbon Not identified

Suspension

1 part

Fork

ARC8 Eero Carbon Not identified

Drivetrain

7 parts

Bottom bracket
- Shimano SM-BBR60
SM-BBR60
Cassette
- Shimano Ultegra CS-R8100
CS-R8100
Chain
- Shimano Deore XT CN-M8100
CN-M8100
Crankset
- Shimano GRX FC-RX820 12 speeds 42t
FC-RX820
Front derailleur

None
Rear derailleur
- Shimano GRX RD-RX822 12 speeds
RD-RX822
Shifters
- Shimano GRX ST-RX820
ST-RX820

Brakes

1 part

Brakes

Hydraulic Disc Not identified

Wheels and tires

2 parts

Cockpit and contact points

5 parts

Handlebar

Alloy handlebar with flare Not identified
Headset

ARC8 Not identified
Saddle
- Selle Italia Novus Boost Evo 3D
Seatpost
- Faserwerk
Stem

ICH Stem Not identified

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD

Table

Reach 376mm

Stack 568mm

Wheelbase 1012mm

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 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	364	376	388	400
Stackmm	545	568	593	618
Top tube lengthmm	525	545	564	583
Seat tube lengthmm	510	550	570	600
Head tube lengthmm	137	157	170	197
Head tube angle	70°	71°	71°	71°
Seat tube angle	73.5°	73.5°	73.5°	73.5°
Chainstay lengthmm	420	420	420	420
Wheelbasemm	1002	1012	1032	1053
Front centermm	594	603	623	644
Bottom bracket dropmm	75	75	75	75
Bottom bracket heightmm	274	274	274	274
Standover heightmm	774	809	830	858
Fork rakemm	50	50	50	50
Trailmm	74	67	67	67
Stack/reach ratio	1.50	1.51	1.53	1.55

Not published by the manufacturer: 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: Carbon
Fork material: Carbon
Frame weight: 0.99 kg

2.2 lb

Suspension

Suspension configuration: Rigid

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 42
Largest chainring: 42
Rear sprockets: 12
Smallest sprocket: 11
Largest sprocket: 51
Lowest gear: 23.9 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

Bottom bracket standard: BSA
Tire clearance: Maximum tire width: 50c
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

23.9 gear inches

This value is below the central range for this class.

Cohort: Road / Gravel Model year: 2024
Sample: 1,719 bicycles with this information
Coverage: 76.6% of the class

Highest gear

110.7 gear inches

This value is within the central range for this class.

Cohort: Road / Gravel Model year: 2024
Sample: 1,719 bicycles with this information
Coverage: 76.6% of the class

Shifting

Mechanical

772 of 2,241 bicycles with this information use electronic shifting.

Cohort: Road / Gravel Model year: 2024
Sample: 2,241 bicycles with this information
Coverage: 99.9% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 9.1 km/h
Highest gear: 42.4 km/h

Total gear range 464%

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: 23.9–110.7 gear inches
Class reference (p10–p90): 23.2–131.8 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Road / Gravel Model year: 2024
Lowest gear: 1719 bicycles with this information, 76.6% of the class
Highest gear: 1719 bicycles with this information, 76.6% 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 2024 builds
Specification	This bicycle ARC8 Eero GRX 1x12	ARC8 Eero Force Wide AXS eTap 1x12	ARC8 Eero GRX 2x12	ARC8 Eero GRX Di2 1x11	ARC8 Eero GRX Di2 2x12
Frame
Frame weight	0.99 kg	0.99 kg	Not informed	0.99 kg	0.99 kg
Bicycle weight	Not informed	Not informed	8.7 kg	Not informed	Not informed
Drivetrain
Front chainrings	1	1	2	1	2
Smallest chainring	42	40	31	40	31
Largest chainring	42	40	48	40	48
Rear sprockets	12	12	12	11	12
Smallest sprocket	11	10	11	11	11
Largest sprocket	51	44	34	42	34
Lowest gear	23.9 in	26.4 in	26.4 in	27.6 in	26.4 in
Highest gear	110.7 in	116.0 in	126.6 in	105.5 in	126.6 in
Cockpit
Shifting	Mechanical	Electronic	Mechanical	Mechanical	Mechanical
Other specifications
Wheel material	Aluminum	Aluminum	Aluminum	Aluminum	Carbon
Tire width	Not informed	40c	40c	40c	40c
Battery	Not informed	Not informed	Not informed	Shimano BRDN300	Shimano BRDN300