Trek Top Fuel 8

Name: Trek Top Fuel 8
Brand: Trek

2019 MountainCross-country Manufacturer page

Last known price: $3,149

Prices shown first for United States
Travel: 100 / 100 mm Fork / rear shock
Wheels: 27.5″, 29″
Drivetrain: 1 × 12 32t / 11–50t
Gear range: 455%
Weight: 12.7 kg 28.0 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

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, ABP, Full Floater, EVO link, tapered head tube, Mino Link, MicroTruss, internal derailleur and dropper post routing, down tube guard, PF92, Boost148, G2 Geometry on 29ers, 100mm travel Not identified

Suspension

2 parts

Drivetrain

6 parts

Brakes

1 part

Brakes
- Shimano BR-MT500
BR-MT500

Wheels and tires

2 parts

Cockpit and contact points

6 parts

Handlebar
- Bontrager
Headset
- FSA
IS-2
Pedals

Not included 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 MD/LG High

Table

Reach 452mm

Stack 570mm

Wheelbase 1125mm

Head angle 70.9°

Seat angle 74.9°

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	401	392	436	427	452	443	466	457	481	472
Stackmm	554	561	570	577	570	577	580	587	598	606
Top tube lengthmm	556	558	593	593	606	609	623	625	646	646
Seat tube lengthmm	394	394	419	419	445	445	470	470	495	495
Head tube lengthmm	100	100	90	90	90	90	100	100	120	120
Head tube angle	70.9°	69.9°	70.9°	70°	70.9°	70°	70.9°	70°	70.9°	70°
Seat tube angle	74.4°	73.5°	74.9°	74°	74.9°	74°	74.9°	74°	74.9°	74°
Chainstay lengthmm	424	427	432	435	432	435	432	435	432	435
Wheelbasemm	1063	1064	1109	1111	1125	1127	1143	1144	1165	1166
Front centermm	639	638	678	679	694	695	712	712	734	734
Bottom bracket dropmm	14	25	28	39	28	39	27	39	27	39
Bottom bracket heightmm	341	330	341	330	341	330	341	330	341	330
Standover heightmm	741	732	734	724	729	719	729	719	729	719
Fork rakemm	48	47	51	52	51	52	51	51	52	51
Trailmm	73	80	74	80	74	80	74	80	74	80
Stack/reach ratio	1.38	1.43	1.31	1.35	1.26	1.30	1.25	1.28	1.24	1.28

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: 12.7 kg

28.0 lb
Weight limit: 136 kg

299.8 lb

Suspension

Suspension configuration: Full suspension
Front travel: 100 mm
Rear travel: 100 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: Rigid seatpost
Shifting: Mechanical

Additional specifications

Bottom bracket standard: BB86/BB92
Fork spring: Air
Tire width: 2.2″
Wheel material: Aluminum
Wheel size: 27.5″, 29″

Technical analysis

3 measures

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

Front travel

100 mm

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2019
Sample: 850 bicycles with this information
Coverage: 96.0% 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: 2019
Sample: 799 bicycles with this information
Coverage: 90.2% of the class

Highest gear

84.4 gear inches

This value is within the central range for this class.

Cohort: Mountain / Cross-country Model year: 2019
Sample: 799 bicycles with this information
Coverage: 90.2% 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): 16.8–105.0 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2019
Lowest gear: 799 bicycles with this information, 90.2% of the class
Highest gear: 799 bicycles with this information, 90.2% 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 2019 builds
Specification	This bicycle Trek Top Fuel 8	Trek Top Fuel 9.8 SL	Trek Top Fuel 9.9 SL	Trek Top Fuel 9.9 SL AXS
Frame
Frame material	Aluminum	Carbon	Carbon	Carbon
Bicycle weight	12.7 kg	11.07 kg	9.98 kg	10.3 kg
Weight limit	136 kg	136 kg	136 kg	Not informed
Fork material	Not informed	Not informed	Carbon	Carbon
Drivetrain
Smallest chainring	32	32	34	32
Largest chainring	32	32	34	32
Smallest sprocket	11	10	10	10
Lowest gear	18.6 in	17.6 in	19.7 in	18.6 in
Highest gear	84.4 in	88.0 in	98.6 in	92.8 in
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Electronic
Other specifications
Wheel material	Aluminum	Carbon	Carbon	Carbon
Wheel size	27.5″ / 29″	27.5″	27.5″ / 29″	29″

Changes since 2018
Specification	2018 Trek Top Fuel 8	This bicycle Trek Top Fuel 8
Frame
Bicycle weight	12.93 kg	12.7 kg
Drivetrain
Front chainrings	2	1
Smallest chainring	22	32
Largest chainring	36	32
Rear sprockets	11	12
Largest sprocket	42	50
Lowest gear	15.2 in	18.6 in
Highest gear	94.9 in	84.4 in