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Trek2025

2025 Trek Top Fuel Gen 4

Trail

The 2025 Trek Top Fuel Gen 4 is a trail bike. The Top Fuel 8 Gen 4 build comes with Shimano XT M8100 SGS shifting and Bontrager Line Comp 30 wheels.

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Key facts

Brand
Trek
Model year
2025
Frame
Gen 4
Type
Trail
Geometry labels
ML
Geometry
Complete for every size
Checked

Geometry by size

2025 Trek Top Fuel Gen 4 geometry by size
MeasurementML
Head tube angle(°)65.5
Sources agree

Stock build

20 parts

Frame

FrameFrom the manufacturer: Frame type Full SuspensionFrom the manufacturer: Rear travel 120mm

Suspension

Fox 34 Rhythm
ForkFrom the manufacturer: Wheel size 29From the manufacturer: Front axle / spacing 15x110 (Boost)Offset 44mmFrom the manufacturer: Stanchion diameter 34mmDamper GRIP
Fox Float DPS Performance
Rear shock

Drivetrain

ShifterActuation type Mechanical
DerailleurSpeeds 12Maximum cog 51 tFrom the manufacturer: Actuation type MechanicalFrom the manufacturer: Clutch yesWeight 284 gFrom the manufacturer: Total capacity 41 t
CassetteSpeeds 12
ChainSpeeds 12From the manufacturer: Compatibility HG 12-speedWeight 252 g
CranksetFrom the manufacturer: Chainring interface BSACrank length 165 / 170 / 175mm
ChainringFrom the manufacturer: Teeth 32 tFrom the manufacturer: Mount standard Direct MountFrom the manufacturer: Speeds 12
Bottom bracketFrom the manufacturer: Spindle interface Hollowtech IIFrom the manufacturer: Shell width 73mmFrom the manufacturer: Weight 73 g

Wheels & Tires

WheelsetInternal rim width 29mmFrom the manufacturer: Rim material AluminumSpoke count 28From the manufacturer: Tubeless ready
TireFrom the manufacturer: TPI 60 TPI

Brakes

Cockpit

HandlebarFrom the manufacturer: Material Aluminum
StemFrom the manufacturer: Steerer diameter 1 1/8"
GripsFrom the manufacturer: Clamp / lock type Lock-onFrom the manufacturer: Compound / material nylon

Seatpost & Saddle

Dropper postFrom the manufacturer: Total length 310mm
SeatpostDiameter 31.6mmWeight ~565 g

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Quick answers

Which size or configuration labels have geometry for the 2025 Trek Top Fuel Gen 4?
Geometry is listed for ML.
What is the head tube angle of the 2025 Trek Top Fuel Gen 4?
The head tube angle is 65.5 degrees in every size.
What does the 2025 Trek Top Fuel 8 Gen 4 ship with?
The stock build includes Trek Top Fuel, Fox 34 Rhythm, Shimano XT M8100, and Bontrager Line Comp 30.
Which years of the Trek Top Fuel are on Quiver?
Quiver has the Trek Top Fuel for 2025, 2027, 2026, 2024, 2021, 2020, 2019, 2018, 2017, 2016, 2011, and 2010.

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