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2019 Trek

Farley 5

A 27.5″ aluminum frame rigid fat bike with upper mid-range components.
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Manufacturer Price

$1,779
Weight31.3 lbs  
FrameAluminum
SuspensionRigid
ForkCarbon
Wheels27.5″ Aluminum
Drivetrain1 × 10
GroupsetDeore
BrakesSRAM Level Hydraulic Disc
Where to Buy
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Insights
Ride Feel

Based on frame geometry and build specs.

Terrain
easyextreme
Handling
nimblestable
Farley 5
Other Fat bikes
Gearing

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

21 mph

Farley 5

23 mph

Similar Bikes

Highest gear

(descending)

Sizing
SM

5'0" – 5'5"

MD

5'2" – 5'10"

LG

5'8" – 6'3"

XL

6'1" – 6'6"

Rider Fit Notes
  • 6'2", size 21.5, Just right
Reviews

Summary

The Trek Farley fatbike series is praised for its versatility across seasons, with models offering enhanced traction, control, and fun on various terrains. Its 27.5-inch wheels and adjustable features like sliding dropouts and suspension forks are frequently highlighted. However, its weight and handling in tight maneuvers are noted as drawbacks.

Pros
  • Dropper post provides more control on downhills

  • 27.5 x 4.5-inch tires roll fast and offer great flotation

  • Adjustable dropouts let the rider fine-tune the Farley's handling

  • Legit four-season capability

  • Rear suspension soaks up chatter

Cons
  • Heavy, even for a fat bike

  • Switching directions quickly, through switchbacks for example, is seriously tough

  • Bluto fork overworked

  • Sidewall vulnerability on tires

Key Quotes
The Farley 7 is the fat bike you don’t put away for the summer.
Bicycling
The most mountain bike feeling fat bike yet
BikeRadar logoBikeRadar
Adding rear suspension to a fat bike is like lifting your 4x4; it seems excessive but it feels so right.
NSMB logoNSMB
There is no reason for an offseason with a bike like this.
MTBR logoMTBR

Feedback?

View all reviews

Bicycling
Trek’s Farley 7 Is an All-Season Fat Bike

Apr 2020

A dropper post, suspension fork, and exceptional handling help this fat bike perform long after the snow melts.

Read Review

MTBR
Chris Farley’s family settles with Trek over fat bike name

Jun 2018 · Jason Sumner

The family of the late comedian and movie actor had filed a federal lawsuit against the Wisconsin-based bike maker, claiming its fat bike named the Farley

Read Review

NSMB
2018 Trek Farley EX 8

Jan 2018

The Farley EX doesn't need your snow or your sand- but it'll handle it just fine - while being a dirt and rock shredder with little compromise...

Read Review

BikeRadar
Trek Farley EX 9.8 review

Jun 2017 · Russell Eich

The most mountain bike feeling fat bike yet. Buy if you want one bike for all seasons, or an extremely stable trail bike, and aren't concerned about pure dry trail performance

Highs
  • Impressive rear suspension, has a very mountain bike feeling, wheelies and manuals with ease

Lows
  • Bluto fork overworked, small tire knobs, busted rear rim

Read Review

Mountain Bike Action
TREK FARLEY EX 9.8 TEST

Mar 2017 · McCoy

Traction To The Max!

Read Review

Geometry
Specs
Build
Frame

Alpha Platinum Aluminum, tapered head tube, internal derailleur & dropper post routing, rack mounts, PF121, 197mm Stranglehold adjustable thru axle dropouts

BB StandardBB86/BB92, 121mm, Press Fit

Fork

Bontrager Haru, OCLV Carbon lowers, tapered steerer, 100mm suspension corrected, 15x150mm

Bottom Bracket

Race Face Press Fit 121mm

Headset

FSA IS-2, 1-1/8˝ top, 1.5˝ bottom

Stem

Bontrager Elite, 31.8mm, 7 degree, Blendr compatible

Handlebar

Bontrager alloy, 31.8mm, 15mm rise

Saddle

Bontrager Arvada

Seatpost

Bontrager alloy, 2-bolt head, 31.6mm, 12mm offset

TypeRigid

Pedals

VP-536 nylon platform

Grips

Bontrager XR Trail Comp, nylon lock-on

Groupset
Rear Derailleur

Shimano Deore M6000, Shadow Plus

Crank

Race Face Ride, 28T Direct Mount

Shifters

Shimano Deore M6000, 10 speed

Cassette

Shimano HG50, 11-42, 10 speed

Chain

KMC X10

Brakes

SRAM Level hydraulic disc

TypeSRAM Level Hydraulic Disc

Wheels
Rims

SUNringlé Mulefut 80 SL 32-hole cutout, tubeless strips and valves sold separately

Front Hub

Bontrager sealed bearing, 150x15

Rear Hub

Bontrager sealed bearing, 197x12

Tires

Bontrager Gnarwhal, Tubeless Ready, Inner Strength sidewalls, 120tpi, aramid bead, 27.5x4.50˝ (S & M rear tire: Bontrager Barbegazi, 27.5x3.80˝)

Rider Notes
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First added July 29

Last updated July 29

Not listed for 2,496 days