ARC8 Extra Air - Fox Factory X0 AXS

2025 MountainEnduro Manufacturer page

Price: Not published

Prices shown first for United States
Europe: €8,999 Last known price
Travel: 160 / 160 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 12 32t / 10–52t
Gear range: 520%
Weight: 12.8 kg 28.2 lb · Reference configuration not specified
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM Low Not informed
MD Low 174–183
LG Low Not informed

Components

17 of 18 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 Extra Air, full carbon Not identified

Suspension

2 parts

Drivetrain

6 parts

Brakes

1 part

Brakes
- Shimano XTR BR-M9220
BR-M9220

Wheels and tires

2 parts

Cockpit and contact points

6 parts

Sizes and geometry

3 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD Low

Table

Reach 476mm

Stack 641mm

Wheelbase 1273mm

Head angle 63.5°

Seat angle 78.5°

Every size is drawn to the same scale, in millimeters. Explanatory schematic on an assumed 29″ wheel; exact published values are in the table below.

Size Reported by the manufacturer

Complete manufacturer geometry table 3 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	446	476	506
Stackmm	627	641	659
Top tube lengthmm	574	606	640
Seat tube lengthmm	380	400	440
Head tube lengthmm	100	115	135
Head tube angle	63.5°	63.5°	63.5°
Seat tube angle	78.5°	78.5°	78.5°
Chainstay lengthmm	442	445	448
Wheelbasemm	1233	1273	1314
Front centermm	794	831	869
Bottom bracket dropmm	42	42	42
Bottom bracket heightmm	332	332	332
Fork rakemm	44	44	44
Trailmm	131	131	132
Stack/reach ratio	1.41	1.35	1.30

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: Carbon
Bicycle weight: 12.8 kg

28.2 lb

Suspension

Suspension configuration: Full suspension
Front travel: 160 mm
Rear travel: 160 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 52
Lowest gear: 17.9 in
Highest gear: 92.8 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Derailleur hanger: UDH
Seatpost: Dropper seatpost
Shifting: Electronic

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire width: 2.5″
Wheel material: Carbon
Wheel size: 29″

Technical analysis

3 measures

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

Front travel

160 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,418 bicycles with this information
Coverage: 97.5% of the class

Rear travel

160 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,105 bicycles with this information
Coverage: 75.9% of the class

Shifting

Electronic

476 of 1,454 bicycles with this information use electronic shifting.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,454 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.8 km/h
Highest gear: 35.5 km/h

Total gear range 520%

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: 17.9–92.8 gear inches

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 2025 builds

Differences across 2025 builds
Specification	This bicycle ARC8 Extra Air - Fox Factory X0 AXS	ARC8 Extra Air - Fox Factory GX AXS	ARC8 Extra Air - Fox Performance XT	ARC8 Extra Coil - Fox Factory GX AXS	ARC8 Extra Coil - Fox Factory X0 AXS	ARC8 Extra Coil - Fox Factory XT
Frame
Bicycle weight	12.8 kg	Not informed	Not informed	Not informed	Not informed	Not informed
Frame weight	Not informed	0.55 kg	0.55 kg	2.91 kg	2.91 kg	2.91 kg
Suspension
Front travel	160 mm	160 mm	160 mm	170 mm	170 mm	170 mm
Rear travel	160 mm	160 mm	160 mm	165 mm	165 mm	165 mm
Drivetrain
Rear sprockets	12	12	Not informed	12	12	Not informed
Largest sprocket	52	52	51	52	52	51
Lowest gear	17.9 in	17.9 in	18.2 in	16.9 in	16.9 in	17.3 in
Highest gear	92.8 in	92.8 in	92.8 in	88.0 in	88.0 in	88.0 in
Wheels
Wheel configuration	Same size	Same size	Same size	Different sizes	Different sizes	Different sizes
Cockpit
Derailleur hanger	UDH	UDH	Not informed	UDH	UDH	Not informed
Shifting	Electronic	Electronic	Mechanical	Electronic	Electronic	Mechanical
Other specifications
Wheel material	Carbon	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum
Wheel size	29″	29″	29″	29″ / 27.5″	29″ / 27.5″	29″ / 27.5″
Rear shock spring	Not informed	Not informed	Not informed	Coil	Coil	Coil