Trek Fuel LX 9 Eagle 90 Gen 7

Name: Trek Fuel LX 9 Eagle 90 Gen 7
Brand: Trek

2026 MountainEnduro Manufacturer page

Last known price: $5,199

Prices shown first for United States
Travel: 170 / 160 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 12 30t / 10–52t
Gear range: 520%
Weight: 17.38 kg 38.3 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Rider height by size (cm)

Size guide

15.5" 155–166
17.5" 164–178
19.5" 176–189
21.5" 187–195

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

Alpha NEXT Platinum aluminum, 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

Sizes and geometry

4 sizes Open in the geometry plotter

Enter your height to highlight matching ranges.

Size 17.5"

Table

Reach 448mm

Stack 633mm

Wheelbase 1237mm

Head angle 63.4°

Seat angle 77.2°

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 4 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	418	448	473	498
Stackmm	619	633	647	661
Top tube lengthmm	552	586	621	655
Seat tube lengthmm	370	400	420	455
Head tube lengthmm	95	110	125	140
Head tube angle	63.4°	63.4°	63.4°	63.5°
Seat tube angle	77.5°	77.2°	76.4°	75.9°
Chainstay lengthmm	437	437	442	447
Wheelbasemm	1200	1237	1273	1310
Front centermm	765	801	833	864
Bottom bracket dropmm	26	27	27	27
Bottom bracket heightmm	348	347	347	347
Standover heightmm	757	754	757	768
Fork rakemm	44	44	43	44
Trailmm	138	138	137	137
Stack/reach ratio	1.48	1.41	1.37	1.33

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: 17.38 kg

38.3 lb
Weight limit: 136 kg

299.8 lb

Suspension

Suspension configuration: Full suspension
Front travel: 170 mm
Rear travel: 160 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: 16.7 in
Highest gear: 87.0 in

Wheels and brakes

Wheel configuration: Same size
Brake type: Hydraulic disc

Fit and controls

Derailleur hanger: UDH
Seatpost: Dropper seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BSA
Fork spring: Air
Rear shock spring: Coil
Tire clearance: Maximum tire width: 2.5″
Tire width: 2.5″
Wheel material: Aluminum
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

170 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

160 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: 6.4 km/h
Highest gear: 33.3 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: 16.7–87.0 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 2026 builds

Differences across 2026 builds
Specification	This bicycle Trek Fuel LX 9 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	Aluminum	Aluminum	Aluminum	Carbon	Carbon	Carbon
Bicycle weight	17.38 kg	17.02 kg	16.89 kg	15.38 kg	15.08 kg	15.28 kg
Suspension
Front travel	170 mm	150 mm	150 mm	150 mm	150 mm	150 mm
Rear travel	160 mm	145 mm	145 mm	145 mm	145 mm	145 mm
Drivetrain
Largest sprocket	52	51	52	52	51	51
Lowest gear	16.7 in	17.1 in	16.7 in	16.7 in	17.1 in	17.1 in
Wheels
Wheel configuration	Same size	Different sizes	Different sizes	Different sizes	Different sizes	Different sizes
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Mechanical	Electronic	Mechanical
Other specifications
Rear shock spring	Coil	Not informed	Not informed	Not informed	Not informed	Not informed
Tire width	2.5″	2.4″	2.5″	2.5″	2.5″	2.5″
Wheel size	29″	29″ / 27.5″	29″ / 27.5″	29″ / 27.5″	29″ / 27.5″	29″ / 27.5″