Trek Fuel MX 9.8 Eagle 90 Gen 7

Name: Trek Fuel MX 9.8 Eagle 90 Gen 7
Brand: Trek

2026 MountainEnduro Manufacturer page

Trek Fuel MX 9.8 Eagle 90 Gen 7, color Purple Phaze / Amethyst Marble

Last known price: $5,999

Prices shown first for United States
Travel: 160 / 150 mm Fork / rear shock
Wheels: 29″ / 27.5″
Drivetrain: 1 × 12 30t / 10–52t
Gear range: 520%
Weight: 14.49 kg 31.9 lb · Reference configuration not specified
Frame: Carbon
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

15.5" 155–166
17.5" 164–178
19.5" 176–189
21.5" 187–196
23" 194–203

Components

16 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

OCLV Mountain Carbon, internal storage, ZS headset, adjustable leverage rate, guided internal routing, interchangeable alloy rocker link, interchangeable lower shock mount, downtube guard, shuttle guard, BSA 73, ISCG 05, ABP, UDH, Boost148, adaptable travel 145mm-160mm Not identified

Suspension

2 parts

Drivetrain

6 parts

Brakes

2 parts

Wheels and tires

2 parts

Cockpit and contact points

5 parts

Grips
- Trek
Handlebar
- Race Face Era
Saddle

Verse Short Pro, carbon rails, 145mm width Not identified
Seatpost
- Bontrager
Stem
- Bontrager

Sizes and geometry

5 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 19.5"

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 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	426	456	482	507	527
Stackmm	613	627	641	654	668
Top tube lengthmm	549	584	618	652	682
Seat tube lengthmm	370	400	420	455	475
Head tube lengthmm	95	110	125	140	155
Head tube angle	64.2°	64.2°	64.2°	64.2°	64.2°
Seat tube angle	78.3°	77.5°	77°	76.6°	76.1°
Chainstay lengthmm	434	434	439	444	449
Wheelbasemm	1191	1228	1264	1301	1332
Front centermm	758	795	826	857	884
Bottom bracket dropmm	31	31	31	31	31
Standover heightmm	745	747	754	760	769
Fork rakemm	46	46	44	45	44
Trailmm	132	132	132	132	132
Stack/reach ratio	1.44	1.38	1.33	1.29	1.27

Not published by the manufacturer: Bottom bracket 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: 14.49 kg

31.9 lb
Weight limit: 136 kg

299.8 lb

Suspension

Suspension configuration: Full suspension
Front travel: 160 mm
Rear travel: 150 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 30
Largest chainring: 30
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 52
Lowest gear: 15.9 in
Highest gear: 82.5 in

Wheels and brakes

Wheel configuration: Different sizes
Brake type: Hydraulic disc

Fit and controls

Derailleur hanger: UDH
Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Tire clearance: Maximum tire width: 2.5″
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

160 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2026
Sample: 1,332 bicycles with this information
Coverage: 95.2% of the class

Rear travel

150 mm

This value is within the central range for this class.

Cohort: Mountain / Enduro Model year: 2026
Sample: 1,005 bicycles with this information
Coverage: 71.8% of the class

Shifting

Mechanical

454 of 1,399 bicycles with this information use electronic shifting.

Cohort: Mountain / Enduro Model year: 2026
Sample: 1,399 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 6.1 km/h
Highest gear: 31.6 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: 15.9–82.5 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 2026 builds

Differences across 2026 builds
Specification	This bicycle Trek Fuel MX 9.8 Eagle 90 Gen 7	Trek Fuel EX 5 Gen 7	Trek Fuel EX 8 Gen 7	Trek Fuel EX 9.8 Eagle 90 Gen 7	Trek Fuel EX 9.8 Gen 7 XT Di2	Trek Fuel EX 9.8 Gen 7 XT
Frame
Frame material	Carbon	Aluminum	Aluminum	Carbon	Carbon	Carbon
Bicycle weight	14.49 kg	17.02 kg	16.89 kg	15.38 kg	15.08 kg	15.28 kg
Suspension
Front travel	160 mm	150 mm	150 mm	150 mm	150 mm	150 mm
Rear travel	150 mm	145 mm	145 mm	145 mm	145 mm	145 mm
Drivetrain
Largest sprocket	52	51	52	52	51	51
Lowest gear	15.9 in	17.1 in	16.7 in	16.7 in	17.1 in	17.1 in
Highest gear	82.5 in	87.0 in	87.0 in	87.0 in	87.0 in	87.0 in
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Mechanical	Electronic	Mechanical
Other specifications
Tire width	2.5″	2.4″	2.5″	2.5″	2.5″	2.5″