Trek Fuel EX 9.8 Gen 7 XT

Name: Trek Fuel EX 9.8 Gen 7 XT
Brand: Trek

2026 MountainTrail Manufacturer page

Trek Fuel EX 9.8 Gen 7 XT, color Purple Phaze / Amethyst Marble

Last known price: $5,999

Prices shown first for United States
Travel: 150 / 145 mm Fork / rear shock
Wheels: 29″ / 27.5″, 29″
Drivetrain: 1 × 12 30t / 10–51t
Gear range: 510%
Weight: 15.28 kg 33.7 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

Reach 485mm

Stack 638mm

Wheelbase 1262mm

Head angle 64.5°

Seat angle 77.4°

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 5 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	431	460	485	510	530
Stackmm	610	624	638	651	665
Top tube lengthmm	548	583	617	651	680
Seat tube lengthmm	370	400	420	455	475
Head tube lengthmm	95	110	125	140	155
Head tube angle	64.6°	64.5°	64.5°	64.5°	64.5°
Seat tube angle	78.7°	78.3°	77.4°	76.9°	76.4°
Chainstay lengthmm	437	437	442	447	452
Wheelbasemm	1187	1225	1262	1298	1330
Front centermm	754	791	822	854	880
Bottom bracket dropmm	34	35	35	35	35
Bottom bracket heightmm	—	339	339	339	339
Standover heightmm	741	742	749	755	764
Fork rakemm	42	44	44	44	44
Trailmm	129	129	129	129	129
Stack/reach ratio	1.42	1.36	1.32	1.28	1.26

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: Carbon
Bicycle weight: 15.28 kg

33.7 lb
Weight limit: 136 kg

299.8 lb

Suspension

Suspension configuration: Full suspension
Front travel: 150 mm
Rear travel: 145 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: 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

4 measures

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

Front travel

150 mm

This value is above the central range for this class.

Cohort: Mountain / Trail Model year: 2026
Sample: 1,640 bicycles with this information
Coverage: 96.3% of the class

Lowest gear

17.1 gear inches

This value is below the central range for this class.

Cohort: Mountain / Trail Model year: 2026
Sample: 1,227 bicycles with this information
Coverage: 72.0% of the class

Highest gear

87.0 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2026
Sample: 1,227 bicycles with this information
Coverage: 72.0% of the class

Shifting

Mechanical

388 of 1,702 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2026
Sample: 1,702 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): 17.1–98.6 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Trail Model year: 2026
Lowest gear: 1227 bicycles with this information, 72.0% of the class
Highest gear: 1227 bicycles with this information, 72.0% 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 2026 builds

Differences across 2026 builds
Specification	This bicycle Trek Fuel EX 9.8 Gen 7 XT	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 9.9 Gen 7 X0 AXS
Frame
Frame material	Carbon	Aluminum	Aluminum	Carbon	Carbon	Carbon
Bicycle weight	15.28 kg	17.02 kg	16.89 kg	15.38 kg	15.08 kg	14.08 kg
Drivetrain
Largest sprocket	51	51	52	52	51	52
Lowest gear	17.1 in	17.1 in	16.7 in	16.7 in	17.1 in	16.7 in
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Mechanical	Electronic	Electronic
Other specifications
Tire width	2.5″	2.4″	2.5″	2.5″	2.5″	2.5″
Wheel material	Aluminum	Aluminum	Aluminum	Aluminum	Aluminum	Carbon