ARC8 Extra Coil - Fox Factory XT

2025 MountainEnduro Manufacturer page

Price: Not published

Prices shown first for United States
Europe: €6,999 Last known price
Travel: 170 / 165 mm Fork / rear shock
Wheels: 29″ / 27.5″
Gear range: 510%
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

SM High Not informed
SM Low Not informed
MD High 174–183
MD Low Not informed
LG High Not informed
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, full carbon Not identified

Suspension

2 parts

Drivetrain

6 parts

Brakes

1 part

Brakes
- Shimano Deore XT BR-M8120
BR-M8120

Wheels and tires

2 parts

Cockpit and contact points

6 parts

Sizes and geometry

6 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size MD High

Table

Geometry diagram unavailable

Diagrams for different front and rear wheel sizes are not available yet. Available facts remain in the table.

Size Reported by the manufacturer

Complete manufacturer geometry table 6 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	440	440	470	470	500	500
Stackmm	632	632	646	646	664	664
Top tube lengthmm	575	575	607	607	641	641
Seat tube lengthmm	380	380	400	400	440	440
Head tube lengthmm	100	100	115	115	135	135
Head tube angle	63°	63°	63°	63°	63°	63°
Seat tube angle	78°	78°	78°	78°	78°	78°
Chainstay lengthmm	430	442	433	445	436	448
Wheelbasemm	1221	1233	1261	1273	1291	1314
Front centermm	794	794	831	830	858	868
Bottom bracket dropmm	38	38	38	38	38	38
Fork rakemm	44	44	44	44	44	44
Trailmm	140	140	141	141	153	143
Stack/reach ratio	1.44	1.44	1.37	1.37	1.33	1.33

Not published by the manufacturer: Bottom bracket height, 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
Frame weight: 2.91 kg

6.4 lb

Suspension

Suspension configuration: Full suspension
Front travel: 170 mm
Rear travel: 165 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 17.3 in
Highest gear: 88.0 in

Wheels and brakes

Wheel configuration: Different sizes
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Rear shock spring: Coil
Tire width: 2.5″
Wheel material: Aluminum
Wheel size: 29″, 27.5″

Technical analysis

3 measures

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

Front travel

170 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,419 bicycles with this information
Coverage: 97.5% of the class

Rear travel

165 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,106 bicycles with this information
Coverage: 76.0% of the class

Shifting

Mechanical

477 of 1,455 bicycles with this information use electronic shifting.

Cohort: Mountain / Enduro Model year: 2025
Sample: 1,455 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.6 km/h
Highest gear: 33.7 km/h

Total gear range 510%

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