Trek Top Fuel 8

Name: Trek Top Fuel 8
Brand: Trek

2020 MountainCross-country Manufacturer page

Last known price: $3,299

Prices shown first for United States
Travel: 120 / 115 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 12 32t / 11–50t
Gear range: 455%
Weight: 13.65 kg 30.1 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

SM High
SM Low
MD High
MD Low
MD/LG High
MD/LG Low
LG High
LG Low
XL High
XL Low
XXL High
XXL Low

The manufacturer did not publish rider heights for these sizes.

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

Alpha Platinum Aluminum, tapered head tube, Knock Block, Control Freak internal routing, downtube guard, magnesium rocker link, Mino Link, ABP, Boost148, 115mm travel Not identified

Suspension

2 parts

Drivetrain

6 parts

Brakes

2 parts

Wheels and tires

2 parts

Cockpit and contact points

5 parts

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

12 sizes Open in the geometry plotter

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

Size MD/LG Low

Table

Reach 456mm

Stack 594mm

Wheelbase 1168mm

Head angle 67.5°

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 12 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	410	405	445	440	461	456	475	470	492	487	515	510
Stackmm	590	594	590	594	590	594	599	603	608	612	617	622
Top tube lengthmm	563	564	598	599	614	615	630	632	650	651	675	677
Seat tube lengthmm	394	394	419	419	445	445	470	470	521	521	559	559
Head tube lengthmm	90	90	90	90	90	90	100	100	110	110	120	120
Head tube angle	68°	67.5°	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°	75.5°	75°
Chainstay lengthmm	434	435	434	435	434	435	434	435	434	435	434	435
Wheelbasemm	1117	1117	1152	1152	1168	1168	1185	1186	1206	1207	1233	1234
Front centermm	685	684	720	719	736	735	753	753	774	774	800	801
Bottom bracket dropmm	30	36	30	36	30	36	29	36	29	36	29	36
Bottom bracket heightmm	343	337	343	337	343	337	343	337	343	337	343	337
Standover heightmm	720	715	725	720	731	725	741	735	761	755	776	770
Fork rakemm	44	44	44	44	44	44	43	44	44	44	44	44
Trailmm	103	107	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	1.20	1.22

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: 13.65 kg

30.1 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: 11
Largest sprocket: 50
Lowest gear: 18.6 in
Highest gear: 84.4 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: Aluminum
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 above the central range for this class.

Cohort: Mountain / Cross-country Model year: 2020
Sample: 1,088 bicycles with this information
Coverage: 86.0% of the class

Lowest gear

18.6 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2020
Sample: 1,057 bicycles with this information
Coverage: 83.6% of the class

Highest gear

84.4 gear inches

This value is below the central range for this class.

Cohort: Mountain / Cross-country Model year: 2020
Sample: 1,057 bicycles with this information
Coverage: 83.6% of the class

Shifting

Mechanical

57 of 1,264 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2020
Sample: 1,264 bicycles with this information
Coverage: 100.0% of the class

Gearing

Estimated speeds at 80 rpm

Lowest gear: 7.1 km/h
Highest gear: 32.3 km/h

Total gear range 455%

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: 18.6–84.4 gear inches
Class reference (p10–p90): 17.4–105.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2020
Lowest gear: 1057 bicycles with this information, 83.6% of the class
Highest gear: 1057 bicycles with this information, 83.6% 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 2020 builds
Specification	This bicycle Trek Top Fuel 8	Trek Top Fuel 9.7	Trek Top Fuel 9.8	Trek Top Fuel 9.8 XT	Trek Top Fuel 9.9	Trek Top Fuel 9.9 XTR
Frame
Frame material	Aluminum	Carbon	Carbon	Carbon	Carbon	Carbon
Bicycle weight	13.65 kg	12.65 kg	11.8 kg	11.94 kg	11.11 kg	11.02 kg
Drivetrain
Smallest sprocket	11	11	10	10	10	10
Largest sprocket	50	50	50	51	50	51
Lowest gear	18.6 in	18.6 in	18.6 in	18.2 in	18.6 in	18.2 in
Highest gear	84.4 in	84.4 in	92.8 in	92.8 in	92.8 in	92.8 in
Other specifications
Bottom bracket standard	BB86/BB92	BB86/BB92	BB86/BB92	BB86/BB92	BB86/BB92	Not informed
Wheel material	Aluminum	Aluminum	Carbon	Carbon	Carbon	Carbon

Changes since 2019
Specification	2019 Trek Top Fuel 8	This bicycle Trek Top Fuel 8
Frame
Bicycle weight	12.7 kg	13.65 kg
Suspension
Front travel	100 mm	120 mm
Rear travel	100 mm	115 mm
Cockpit
Seatpost	Rigid seatpost	Dropper seatpost
Other specifications
Tire width	2.2″	2.4″
Wheel size	27.5″ / 29″	29″
Tire clearance	Not informed	Maximum tire width: 2.4″