Trek Top Fuel 7 SX

Name: Trek Top Fuel 7 SX
Brand: Trek

2021 MountainCross-country Manufacturer page

Trek Top Fuel 7 SX, color Lithium Grey / Trek Black

Travel: 120 / 115 mm Fork / rear shock
Wheels: 29″
Drivetrain: 1 × 12 32t / 11–50t
Gear range: 455%
Weight: 14.17 kg 31.2 lb · Reference configuration not specified
Frame: Aluminum
Brakes: Hydraulic disc

Sizes

Size guide

21.5" High
21.5" Low

The manufacturer did not publish rider heights for these sizes.

Components

18 of 20 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 Aluminium, tapered head tube, Knock Block, Control Freak internal routing, downtube guard, magnesium rocker link, Mino Link, ABP, Boost148, 115 mm travel Not identified

Suspension

2 parts

Drivetrain

6 parts

Brakes

2 parts

Brakes
- Shimano BR-MT200
BR-MT200
Disc rotors
- Shimano SM-RT26
SM-RT26

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
- Tranz-X
JD-YSP18
Stem
- Bontrager

Sizes and geometry

2 sizes Open in the geometry plotter

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

Size 21.5" High

Table

Reach 492mm

Stack 608mm

Wheelbase 1206mm

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 2 published sizes

Complete manufacturer geometry by size
Measurement
Reachmm	492	487
Stackmm	608	612
Top tube lengthmm	650	651
Seat tube lengthmm	521	521
Head tube lengthmm	110	110
Head tube angle	68°	67.5°
Seat tube angle	75.5°	75°
Chainstay lengthmm	434	435
Wheelbasemm	1206	1207
Front centermm	774	774
Bottom bracket dropmm	29	36
Bottom bracket heightmm	343	337
Standover heightmm	761	755
Fork rakemm	44	44
Trailmm	103	107
Stack/reach ratio	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: Aluminum
Bicycle weight: 14.17 kg

31.2 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: 2021
Sample: 1,256 bicycles with this information
Coverage: 91.6% 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: 2021
Sample: 1,101 bicycles with this information
Coverage: 80.3% 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: 2021
Sample: 1,101 bicycles with this information
Coverage: 80.3% of the class

Shifting

Mechanical

89 of 1,368 bicycles with this information use electronic shifting.

Cohort: Mountain / Cross-country Model year: 2021
Sample: 1,368 bicycles with this information
Coverage: 99.7% 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): 17.4–100.2 gear inches; The band runs from p10 for the lowest gear to p90 for the highest gear.

Cohort: Mountain / Cross-country Model year: 2021
Lowest gear: 1101 bicycles with this information, 80.3% of the class
Highest gear: 1101 bicycles with this information, 80.3% 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

Differences across 2021 builds
Specification	This bicycle 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	Trek Top Fuel 9.8 XT
Frame
Frame material	Aluminum	Aluminum	Carbon	Carbon	Carbon	Carbon
Bicycle weight	14.17 kg	13.66 kg	12.65 kg	11.74 kg	11.88 kg	11.83 kg
Drivetrain
Smallest sprocket	11	11	11	10	10	10
Largest sprocket	50	50	50	52	52	51
Lowest gear	18.6 in	18.6 in	18.6 in	17.9 in	17.9 in	18.2 in
Highest gear	84.4 in	84.4 in	84.4 in	92.8 in	92.8 in	92.8 in
Cockpit
Shifting	Mechanical	Mechanical	Mechanical	Mechanical	Electronic	Mechanical
Other specifications
Tire clearance	Maximum tire width: 2.4″	Maximum tire width: 2.4″	Maximum tire width: 2.4″	Maximum tire width: 2.4″	Not informed	Maximum tire width: 2.4″
Wheel material	Aluminum	Aluminum	Aluminum	Carbon	Carbon	Carbon