Trek Farley 9 Mountain Bike

US$ 2,799.00
(3 customer reviews)

Trek Farley 9 Mountain Bike

Farley 9 is the ultimate fat bike for the explorer who doesn’t want to hold back. What sets this Farley apart is its fully-equipped, frame-specific package of racks and bags for loading up with everything you need to get way, way beyond the beaten path. Extra-wide 4.5-inch tires give you amazing traction over loose terrain and progressive trail geometry gives you extra stability and efficient pedaling

Size Guide
Image Size Guide
MPN: 85782876 SKU: TREKMTB2023010047 Category:

Trek Farley 9 Mountain Bike

Fat and fast

27.5″ fat tires give you the best combo of all-terrain grip, stability, flotation, and fast-rolling speed

Adventure-ready fork

Farley’s new, short-offset OCLV carbon fork puts you in an optimal position over the front wheel, upping traction over sketchy terrain while allowing for a shorter stem. A custom rack mount on the crown and thoughtfully positioned triple bottle bosses (64mm spacing) on the lower legs let you gear up without sacrificing handling. Protective rubber bumpers on the bottom of the fork legs keep Farley upright and manageable when the front wheel needs to come off.

Haul of the wild

Mounts all over the frame let you carry a wide variety of gear with endless customization options. Gummy bears? Extra layers? Camping gear? Haul it all.

Load up and bring on the big

Farley 9 comes with custom racks, a fender, frame bags, and drybag holders. Load up and get ready for your biggest adventures.

Keep it clean

Internal routing helps to protect Farley’s components from the elements and makes it easy to mount gear

Rapid Drive 108 rear hub

With 108 points of engagement, Rapid Drive gives you nearly instant acceleration instead of a clunky lag when you step on the pedals. You get smooth, immediate power to blast out of corners and hammer through the rough stuff. And that extra pedal ratchet adds control that can make all the difference when tackling a tricky climb.

FrameAlpha Platinum Aluminum, tapered head tube, top tube bag mounts, strapless full frame bag mounts, downtube fender mount, lower downtube accessory mount, seat stay rear rack mounts, internal rear derailleur & dropper post routing, 100mm threaded BB, UDH, 197x12mm
ForkFarley carbon, tapered alloy steerer, crown rack mounts, lower leg cage mounts, 150x15mm thru axle
Max compatible fork travel80mm (492mm axle-to-crown)
Hub frontBontrager alloy, sealed bearing, 6-bolt, 15x150mm thru axle
Skewer frontBontrager Switch thru axle, removable lever
Hub rearBontrager alloy, sealed bearing, 6-bolt, Rapid Drive 108, Shimano 10 freehub, 197x12mm thru axle
Skewer rearBontrager Switch thru axle, removable lever
RimSUNRingle Mulefut 80 SL, 32-hole cutout
TireBontrager Gnarwhal Team Issue, Tubeless Ready, Inner Strength sidewalls, studdable, aramid bead, 120 tpi, 27.5×4.50”
Max tire size27.5×4.50″
ShifterSRAM GX Eagle, 12 speed
Rear derailleurSRAM GX Eagle
*CrankSize: S, M, L
SRAM X1 1000 Eagle, DUB, 30T alloy FAT 5 ring, 170mm length
Size: XL
SRAM X1 1000 Eagle, DUB, 30T alloy FAT 5 ring, 175mm length
Bottom bracketSRAM DUB, 100mm, BSA threaded
CassetteSRAM PG-1230 Eagle, 11-50, 12 speed
ChainSRAM NX Eagle, 12 speed
PedalVP-536 nylon platform
Max chainring size1x: 32T
SaddleBontrager Verse Elite, austenite rails, 145mm width
*SeatpostSize: S
TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length
Size: M
TranzX JD-YSP18, 130mm travel, internal routing, 31.6mm, 425mm length
Size: L, XL
TranzX JD-YSP18, 150mm travel, internal routing, 31.6mm, 470mm length
HandlebarBontrager Rhythm Comp, alloy, 31.8mm, 15mm rise, 750mm width
GripsBontrager XR Trail Comp, nylon lock-on
*StemSize: S
Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 50mm length
Size: M
Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 60mm length
Size: L, XL
Bontrager alloy, 31.8mm, Blendr compatible, 7 degree, 70mm length
HeadsetFSA IS-2, 1-1/8” top, 1.5” bottom
BrakeSRAM Level Bronze 4-piston hydraulic disc
*Brake rotorSize: S, M, L, XL
SRAM CenterLine, 6-bolt, round-edge, 160mm
Size: S, M, L, XL
SRAM CenterLine, 6-bolt, round edge, 180mm
*BagSize: S, M, L, XL
Farley compression harness, up to 915 cu in (15L)
Size: S
Adventure Boss full-frame bag, 232 cu in (3.8L)
Size: M
Adventure Boss full-frame bag, 207 cu in (3.4L)
Size: L
Adventure Boss full-frame bag, 140 cu in (2.3L)
Size: XL
Adventure Boss full-frame bag, 305 cu in (5L)
*Cargo rackSize: S, M, L, XL
Farley custom front rack, Lava gloss
Size: S, M, L, XL
Farley custom rear rack, Lava gloss
WeightM – 18.30 kg / 40.35 lbs (with tubes)
Weight limitThis bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).



SizeRider HeightInseam

155 – 165 cm

5’1″ – 5’5″

74 – 78 cm

29″ – 31″


165 – 176 cm

5’5″ – 5’9″

79 – 83 cm

31″ – 33″


177 – 188 cm

5’10” – 6’2″

84 – 89 cm

33″ – 35″


188 – 195 cm

6’2″ – 6’5″

89 – 91 cm

35″ – 36″


L, M, S, XL

3 reviews for Trek Farley 9 Mountain Bike

  1. Roman

    Never had any problems, quick delivery, recommended

  2. Juraj

    Great fast service.

  3. Brooke Rogers

    Quick, reliable, good stock.

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