Trek Top Fuel 9.8 XT

Name: Trek Top Fuel 9.8 XT
Brand: Trek

2021 MountainTrail Manufacturer page

Trek Top Fuel 9.8 XT, color Matte Raw Carbon / Voodoo Trek Black

Price: Not published

Prices shown first for United States
Europe: €5,999 Last known price
Travel: 120 / 115 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 12 32t / 10–51t
Gear range: 510%
Weight: 11.83 kg 26.1 lb · Reference configuration not specified
Frame: Carbon
Brakes: Hydraulic disc

Sizes

Size guide

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

The manufacturer did not publish rider heights for these sizes.

Components

18 of 19 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.

Suspension

2 parts

Drivetrain

6 parts

Brakes

2 parts

Wheels and tires

3 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

10 sizes Open in the geometry plotter

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

Size 18.5" High

Table

Reach 461mm

Stack 590mm

Wheelbase 1168mm

Head angle 68.0°

Seat angle 75.5°

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 10 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	410	405	445	440	461	456	475	470	492	487
Stackmm	590	594	590	594	590	594	599	603	608	612
Top tube lengthmm	563	564	598	599	614	615	630	632	650	651
Seat tube lengthmm	394	394	419	419	445	445	470	470	521	521
Head tube lengthmm	90	90	90	90	90	90	100	100	110	110
Head tube angle	68°	67.5°	68°	67.5°	68°	67.5°	68°	67.5°	68°	67.5°
Seat tube angle	75.5°	75°	75.5°	75°	75.5°	75°	75.5°	75°	75.5°	75°
Chainstay lengthmm	434	435	434	435	434	435	434	435	434	435
Wheelbasemm	1117	1117	1152	1152	1168	1168	1185	1186	1206	1207
Front centermm	685	684	720	719	736	735	753	753	774	774
Bottom bracket dropmm	30	36	30	36	30	36	29	36	29	36
Bottom bracket heightmm	343	337	343	337	343	337	343	337	343	337
Standover heightmm	731	725	736	730	741	735	751	745	771	765
Fork rakemm	44	44	44	44	44	44	43	44	44	44
Trailmm	103	107	103	107	103	107	103	107	103	107
Stack/reach ratio	1.44	1.47	1.33	1.35	1.28	1.30	1.26	1.28	1.24	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: 11.83 kg

26.1 lb
Weight limit: 136 kg

299.8 lb

Suspension

Suspension configuration: Full suspension
Front travel: 120 mm
Rear travel: 115 mm

Drivetrain

Derived by Bikelake

Front chainrings: 1
Smallest chainring: 32
Largest chainring: 32
Rear sprockets: 12
Smallest sprocket: 10
Largest sprocket: 51
Lowest gear: 18.2 in
Highest gear: 92.8 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: 2.4″
Tire width: 2.4″
Wheel material: Carbon
Wheel size: 29″

Technical analysis

4 measures

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

Front travel

120 mm

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,324 bicycles with this information
Coverage: 98.1% of the class

Lowest gear

18.2 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,137 bicycles with this information
Coverage: 84.2% of the class

Highest gear

92.8 gear inches

This value is within the central range for this class.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,137 bicycles with this information
Coverage: 84.2% of the class

Shifting

Mechanical

53 of 1,346 bicycles with this information use electronic shifting.

Cohort: Mountain / Trail Model year: 2021
Sample: 1,346 bicycles with this information
Coverage: 99.7% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.0 km/h
Highest gear: 35.5 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: 18.2–92.8 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: 2021
Lowest gear: 1137 bicycles with this information, 84.2% of the class
Highest gear: 1137 bicycles with this information, 84.2% 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 2021 builds
Specification	This bicycle Trek Top Fuel 9.8 XT	Trek Top Fuel 7 SX	Trek Top Fuel 8 NX	Trek Top Fuel 9.7	Trek Top Fuel 9.8 GX	Trek Top Fuel 9.8 GX AXS
Frame
Frame material	Carbon	Aluminum	Aluminum	Carbon	Carbon	Carbon
Bicycle weight	11.83 kg	14.17 kg	13.66 kg	12.65 kg	11.74 kg	11.88 kg
Drivetrain
Smallest sprocket	10	11	11	11	10	10
Largest sprocket	51	50	50	50	52	52
Lowest gear	18.2 in	18.6 in	18.6 in	18.6 in	17.9 in	17.9 in
Highest gear	92.8 in	84.4 in	84.4 in	84.4 in	92.8 in	92.8 in
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Mechanical	Mechanical	Electronic
Other specifications
Tire clearance	Maximum tire width: 2.4″	Maximum tire width: 2.4″	Maximum tire width: 2.4″	Maximum tire width: 2.4″	Maximum tire width: 2.4″	Not informed
Wheel material	Carbon	Aluminum	Aluminum	Aluminum	Carbon	Carbon