Trek Fuel EX Carbon (Gen 6)

Frame

Fuel EX Carbon (Gen 6)

Specifications

Manufacturer
Trek
Name
Fuel EX Carbon (Gen 6)
Discipline
Mountain
Material
Carbon
Max Fork Travel (mm)
150
Seatpost Diameter (mm)
34.9
Wheel Sizes
650b / 27.5"
Frame Size
XS, S, M, L, XL
Front Axle Standard
15 × 110 mm (Boost)
Rear Axle Standard
12 × 148 mm (Boost)
Rear Derailleur Mount
UDH[1]
BB Standard
BSA THREADED
Cable Routing
Internal
Max Chainring Size (T)
34
Sources
  1. [1] trekbikes.com, checked 5 Sep 2026: Rear Derailleur Mount

Included Components

  • fork
    Trek Fuel EX Carbon (Gen 6) Fork

Compatibility

Trek Fuel EX Carbon (Gen 6) is a Trek mtb frame. Everything listed below was matched on a specification we hold for both parts: the interface each pairing actually depends on, such as freehub body, speed count, actuation or mounting standard. Where we could not verify that interface, the part is left out rather than assumed to fit.

Bottom brackets for this frame shell20

878Mechanically compatible

Token

878

  • Both are bsa threaded bottom bracket shells
BB29BSAMechanically compatible

Token

BB29BSA

  • Both are bsa threaded bottom bracket shells
BB386 crank to BSA frame thread Ceramic bearingsMechanically compatible

FSA

BB386 crank to BSA frame thread Ceramic bearings

  • Both are bsa threaded bottom bracket shells
BB392 crank to BSA frameMechanically compatible

FSA

BB392 crank to BSA frame

  • Both are bsa threaded bottom bracket shells
BB392BSAMechanically compatible

Token

BB392BSA

  • Both are bsa threaded bottom bracket shells
BSA Bottom Bracket (Shimano 24mm)Mechanically compatible

Cybrei

BSA Bottom Bracket (Shimano 24mm)

  • Both are bsa threaded bottom bracket shells
BSA Bottom Bracket (SRAM DUB)Mechanically compatible

Cybrei

BSA Bottom Bracket (SRAM DUB)

  • Both are bsa threaded bottom bracket shells
CARTRIDGE BOTTOM BRACKETMechanically compatible

Shimano

CARTRIDGE BOTTOM BRACKET

  • Both are bsa threaded bottom bracket shells
DEORE XT THREADED BOTTOM BRACKET 68/73 MM SHELL WIDTH (BB-MT800)Mechanically compatible

Shimano

DEORE XT THREADED BOTTOM BRACKET 68/73 MM SHELL WIDTH (BB-MT800)

  • Both are bsa threaded bottom bracket shells
DEORE XT THREADED BOTTOM BRACKET 68/73 MM SHELL WIDTH (BB-MT801)Mechanically compatible

Shimano

DEORE XT THREADED BOTTOM BRACKET 68/73 MM SHELL WIDTH (BB-MT801)

  • Both are bsa threaded bottom bracket shells
DUB-BSAMechanically compatible

Praxis

DUB-BSA

  • Both are bsa threaded bottom bracket shells
ISO Square Taper (BSA / ISO)Mechanically compatible

Token

ISO Square Taper (BSA / ISO)

  • Both are bsa threaded bottom bracket shells
JIS Square Taper (BSA / JIS)Mechanically compatible

Token

JIS Square Taper (BSA / JIS)

  • Both are bsa threaded bottom bracket shells
M24 – BSA THREADEDMechanically compatible

Praxis

M24 – BSA THREADED

  • Both are bsa threaded bottom bracket shells
Mega Exo Comet crank to 68/73mm frameMechanically compatible

FSA

Mega Exo Comet crank to 68/73mm frame

  • Both are bsa threaded bottom bracket shells
MegaExo Comet crank to BSA 100mmMechanically compatible

FSA

MegaExo Comet crank to BSA 100mm

  • Both are bsa threaded bottom bracket shells
MegaExo crankMechanically compatible

FSA

MegaExo crank

  • Both are bsa threaded bottom bracket shells
MegaExo Gamma Drive crank to BSA frameMechanically compatible

FSA

MegaExo Gamma Drive crank to BSA frame

  • Both are bsa threaded bottom bracket shells
MegaExo GOSSAMER crank to BSA frame Di2 compatibleMechanically compatible

FSA

MegaExo GOSSAMER crank to BSA frame Di2 compatible

  • Both are bsa threaded bottom bracket shells
MegaExo K-Force crank to BSA 68/73mm frameMechanically compatible

FSA

MegaExo K-Force crank to BSA 68/73mm frame

  • Both are bsa threaded bottom bracket shells

Seatposts for this seat tube16

Divine 2.0Mechanically compatible

BikeYoke

Divine 2.0

  • Both are 34.9mm
Highline 3 Dropper PostMechanically compatible

Crankbrothers

Highline 3 Dropper Post

  • Both are 34.9mm
LEV CircuitMechanically compatible

KS

LEV Circuit

  • Both are 34.9mm
LEV IntegraMechanically compatible

KS

LEV Integra

  • Both are 34.9mm
Loam Dropper Post Gen 2Mechanically compatible

PNW Components

Loam Dropper Post Gen 2

  • Both are 34.9mm
RAGE-i 2.0Mechanically compatible

KS

RAGE-i 2.0

  • Both are 34.9mm
Rage-iSMechanically compatible

KS

Rage-iS

  • Both are 34.9mm
Resolve Dropper Post rev2Mechanically compatible

Wolf Tooth

Resolve Dropper Post rev2

  • Both are 34.9mm
Reverb AXSMechanically compatible

RockShox

Reverb AXS

  • Both are 34.9mm
Revive 3.0Mechanically compatible

BikeYoke

Revive 3.0

  • Both are 34.9mm
TransferMechanically compatible

Fox

Transfer

  • Both are 34.9mm
Transfer NeoMechanically compatible

Fox

Transfer Neo

  • Both are 34.9mm
V3 Dropper PostMechanically compatible

OneUp Components

V3 Dropper Post

  • Both are 34.9mm
VantageMechanically compatible

KS

Vantage

  • Both are 34.9mm
Tellis V1 Dropper PostMechanically compatible

SDG

Tellis V1 Dropper Post

  • Both are 34.9mm
Tellis V2 Dropper PostMechanically compatible

SDG

Tellis V2 Dropper Post

  • Both are 34.9mm

Forks with a matching steerer and wheel size20

700C Disc Brake CX Fork Gravel Carbon ForkShares a standard

LightCarbon

700C Disc Brake CX Fork Gravel Carbon Fork

  • Both are built for 650b wheels
700C Disc Brake Gravel Carbon Fork Aero Gravel Bike ForkShares a standard

LightCarbon

700C Disc Brake Gravel Carbon Fork Aero Gravel Bike Fork

  • Both are built for 650b wheels
700C Disc Brake Gravel Carbon Fork Racing Gravel ForkShares a standard

LightCarbon

700C Disc Brake Gravel Carbon Fork Racing Gravel Fork

  • Both are built for 650b wheels
Bomber Z2Shares a standard

Marzocchi

Bomber Z2

  • Both are built for 650b wheels
Firestarter Carbon ForkShares a standard

Salsa

Firestarter Carbon Fork

  • Both are built for 650b wheels
🚲Shares a standard

Lauf

Grit

  • Both are built for 650b wheels
🚲Shares a standard

Lauf

Grit SL

  • Both are built for 650b wheels
HelmShares a standard

Cane Creek

Helm

  • Both are built for 650b wheels
RC32Shares a standard

X-Fusion

RC32

  • Both are built for 650b wheels
RC32 BoostShares a standard

X-Fusion

RC32 Boost

  • Both are built for 650b wheels
🚲Shares a standard

Lauf

TR Boost 29

  • Both are built for 650b wheels
VELVET RLShares a standard

X-Fusion

VELVET RL

  • Both are built for 650b wheels
Waxwing Carbon ForkShares a standard

Salsa

Waxwing Carbon Fork

  • Both are built for 650b wheels
40 FACTORY - GRIP X2Shares a standard

Fox

40 FACTORY - GRIP X2

  • Both are built for 650b wheels
Carbon Gravel Fork No.9 MCX+Shares a standard

Whisky Parts Co

Carbon Gravel Fork No.9 MCX+

  • Both are built for 650b wheels
Cocktail ForkShares a standard

Surly

Cocktail Fork

  • Both are built for 650b wheels
Dinner ForkShares a standard

Surly

Dinner Fork

  • Both are built for 650b wheels
JudyShares a standard

RockShox

Judy

  • Both are built for 650b wheels
Judy Gold RLShares a standard

RockShox

Judy Gold RL

  • Both are built for 650b wheels
Judy Silver TKShares a standard

RockShox

Judy Silver TK

  • Both are built for 650b wheels

Frequently Asked Questions

What fits Trek Fuel EX Carbon (Gen 6)?

On this page we list bottom brackets for this frame shell, seatposts for this seat tube, forks with a matching steerer and wheel size. Each listing was matched on a specification we hold for both parts; anything we could not verify is omitted rather than assumed to fit.

Can I mix Trek Fuel EX Carbon (Gen 6) with road components?

Trek Fuel EX Carbon (Gen 6) is recorded as a mtb component. Some standards do carry across (cassette spacing at a given speed count, for instance), but cable pull ratio and chainline frequently differ between mtb and road groups, so check the specific pairing rather than assuming it carries over.