Trek Fuel EX 8

Name: Trek Fuel EX 8
Brand: Trek

2022 MountainTrail Manufacturer page

Trek Fuel EX 8, color Alpine Blue / Deep Dark Blue

Travel: 140 / 130 mm Fork / rear shock
Wheels: 27.5″, 29″
Drivetrain: 1 × 12 30t / 10–51t
Gear range: 510%
Weight: 13.86 kg 30.6 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

14" High
14" Low
15.5" High
15.5" Low
15.5" High
15.5" Low
17.5" High
17.5" Low
18.5" High
18.5" Low
19.5" High
19.5" Low
21.5" High
21.5" Low
23" High
23" Low

The manufacturer did not publish rider heights for these sizes.

Components

20 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

alloy frame Not identified

Suspension

2 parts

Drivetrain

6 parts

Brakes

2 parts

Brakes
- Shimano BR-MT420
BR-MT420
Disc rotors
- Shimano SM-RT66
SM-RT66

Wheels and tires

5 parts

Cockpit and contact points

6 parts

Grips
- Bontrager
Handlebar
- Bontrager
Headset

Knock Block Integrated, 58-degree radius, cartridge bearing, 1-1/8'' top, 1.5'' bottom Not identified
Saddle
- Bontrager
Seatpost
- Bontrager
Stem
- Bontrager

Sizes and geometry

16 sizes Open in the geometry plotter

Complete rider-height ranges are not published for these sizes. You can still explore the geometry below.

Size 17.5" Low

Table

Reach 440mm

Stack 609mm

Wheelbase 1179mm

Head angle 66.0°

Seat angle 75.0°

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 Reach Stack

Complete manufacturer geometry table 16 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	400	395	420	415	420	415	445	440	460	455	475	470	500	495	520	515
Stackmm	559	563	568	572	605	609	605	609	609	613	609	613	623	627	641	645
Top tube lengthmm	545	546	567	568	577	578	602	603	618	619	633	634	662	663	687	688
Seat tube lengthmm	355	356	395	395	395	395	420	420	435	435	450	450	500	500	540	540
Head tube lengthmm	90	90	100	100	100	100	100	100	105	105	105	105	120	120	140	140
Head tube angle	66.5°	66°	66.5°	66°	66.5°	66°	66.5°	66°	66.5°	66°	66.5°	66°	66.5°	66°	66.5°	66°
Seat tube angle	75.5°	75°	75.5°	75°	75.5°	75°	75.5°	75°	75.5°	75°	75.5°	75°	75.5°	75°	75.5°	75°
Chainstay lengthmm	436	437	436	437	436	437	436	437	436	437	436	437	436	437	436	437
Wheelbasemm	1119	1120	1143	1144	1153	1154	1178	1179	1195	1196	1210	1211	1241	1242	1269	1270
Front centermm	683	684	707	708	718	719	743	744	760	761	775	776	806	807	834	835
Bottom bracket dropmm	14	21	14	21	28	34	28	34	28	34	27	34	27	34	27	34
Bottom bracket heightmm	341	335	341	335	346	340	346	340	346	340	346	340	346	340	346	340
Standover heightmm	700	695	707	700	707	701	748	742	751	745	756	750	768	762	806	800
Fork rakemm	42	43	42	43	43	43	43	43	43	43	43	43	43	43	43	43
Trailmm	106	111	106	111	115	119	116	119	116	119	116	119	116	119	116	119
Stack/reach ratio	1.40	1.43	1.35	1.38	1.44	1.47	1.36	1.38	1.32	1.35	1.28	1.30	1.25	1.27	1.23	1.25

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: Aluminum
Bicycle weight: 13.86 kg

30.6 lb
Weight limit: 136 kg

299.8 lb

Suspension

Suspension configuration: Full suspension
Front travel: 140 mm
Rear travel: 130 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 17.1 in
Highest gear: 87.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BB86/BB92
Fork spring: Air
Tire clearance: Maximum tire width: 2.6″
Tire width: 2.5″
Wheel material: Aluminum
Wheel size: 27.5″, 29″

Technical analysis

4 measures

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

Front travel

140 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2022
Sample: 1,700 bicycles with this information
Coverage: 98.6% of the class

Lowest gear

17.1 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2022
Sample: 1,353 bicycles with this information
Coverage: 78.4% of the class

Highest gear

87.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2022
Sample: 1,353 bicycles with this information
Coverage: 78.4% of the class

Shifting

Mechanical

121 of 1,724 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2022
Sample: 1,724 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.5 km/h
Highest gear: 33.3 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: 17.1–87.0 gear inches
Class reference (p10–p90): 16.9–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2022
Lowest gear: 1353 bicycles with this information, 78.4% of the class
Highest gear: 1353 bicycles with this information, 78.4% 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 2022 builds
Specification	This bicycle Trek Fuel EX 8	Trek Fuel EX 5	Trek Fuel EX 5 Deore	Trek Fuel EX 7	Trek Fuel EX 9.7	Trek Fuel EX 9.8 GX
Frame
Frame material	Aluminum	Aluminum	Aluminum	Aluminum	Carbon	Carbon
Bicycle weight	13.86 kg	15.7 kg	15.7 kg	14.48 kg	13.65 kg	13.1 kg
Drivetrain
Smallest sprocket	10	10	10	11	10	10
Largest sprocket	51	51	51	50	51	52
Lowest gear	17.1 in	17.1 in	17.1 in	17.4 in	17.1 in	16.7 in
Highest gear	87.0 in	87.0 in	87.0 in	79.1 in	87.0 in	87.0 in
Other specifications
Tire width	2.5″	2.6″	2.6″	2.6″	2.5″	2.5″
Wheel material	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum	Carbon

Changes since 2021
Specification	2021 Trek Fuel EX 8	This bicycle Trek Fuel EX 8
Drivetrain
Front chainrings	Not informed	1
Smallest chainring	Not informed	30
Largest chainring	Not informed	30
Lowest gear	Not informed	17.1 in
Highest gear	Not informed	87.0 in