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Farley 9 is the ultimate fat bike for the explorer who doesn't want to hold back.
Farley 9 is the ultimate fat bike for the explorer who doesn't want to hold back.
Trek

Trek Farley 9 Fat Bike in Mercury

$2,999.99 $3,999.99 25% off
Size Guide
Preorder

With Pre-Order, you can purchase the latest items added to our store in advance of them arriving with us.

Your Pre-Order is prioritized (at no additional charge); meaning that as soon as the product arrives with us, we can wrap it straight back up; ready for collection via Click & Collect or dispatch to you — it often never even hits the stock room shelves!

Prelaunch

With Prelaunch, the date when we expect to receive the product ourselves is still a little too hazy to be confident in accepting Preorders.

So, instead, you can submit your email address for the item you are interested in, and we will email you as soon as stock arrives in the system.

Estimated Delivery & Collection Dates

Estimated Delivery & Collection Dates are given on Pre-Order and Pre-Launch products. They are for indicative purposes only and can change at any time without notice.

The dates we provide are based on information given by our suppliers. Whenever we get updated information from our suppliers we will endeavor to update the Estimated Delivery & Collection Dates provided on product pages.

We estimate this will be ready for dispatch to you or collection via Click & Collect on Undetermined

Trek Farley 9 Fat Bike in Mercury

Season:2026

Brand:Trek

Code:37023GRY

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. The frame and fork are loaded with extra mounts for adding even more accessories.

Features:

  • It's a bike that's built for big adventures with custom accessories to make any adventure better
  • It comes with a carbon fork that has lower leg mounts for gear cages, mounts for Trek's custom front rack, and rubber bumpers to protect the dropouts when the front wheel is removed
  • Its huge 4.5-inch tires will keep you floating over snow, sand, mud, and dirt
  • You get plenty of racks and bags for loading up all of the essentials for the ultimate bikepacking adventure
  • The internally routed dropper post lets you move around on the bike and get behind the saddle on steep descents
Technical Information
  • Frame
    Alpha 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
  • Fork
    Farley carbon, tapered alloy steerer, crown rack mounts, lower leg cage mounts, 150x15mm thru axle
  • Max compatible fork travel
    80mm (492mm axle-to-crown)
  • Hub front
    Bontrager alloy, sealed bearing, 6-bolt, 15x150mm thru axle
  • Skewer front
    Bontrager Switch thru axle, removable lever
  • Hub rear
    Bontrager alloy, sealed bearing, 6-bolt, Rapid Drive 108, Shimano 10 freehub, 197x12mm thru axle
  • Skewer rear
    Bontrager Switch thru axle, removable lever
  • Rim
    SUNRingle Mulefut 80 SL, 32-hole cutout
  • Tire
    Bontrager Gnarwhal Team Issue, Tubeless Ready, Inner Strength sidewalls, studdable, aramid bead, 120 tpi, 27.5x4.50''
  • Max tire size
    27.5x4.50"
  • Shifter
    SRAM GX Eagle, 12 speed
  • Rear derailleur
    SRAM GX Eagle
  • Crank
    S, M, L: SRAM X1 1000 Eagle, DUB, 30T alloy FAT 5 ring, 170mm length XL: SRAM X1 1000 Eagle, DUB, 30T alloy FAT 5 ring, 175mm length
  • Bottom bracket
    SRAM DUB, 100mm, BSA threaded
  • Cassette
    SRAM PG-1230 Eagle, 11-50, 12 speed
  • Chain
    SRAM NX Eagle, 12 speed
  • Pedal
    VP-536 nylon platform
  • Max chainring size
    1x: 32T
  • Saddle
    Bontrager Verse Elite, austenite rails, 145mm width
  • Seatpost
    S: TranzX JD-YSP18, 100mm travel, internal routing, 31.6mm, 361mm length M: TranzX JD-YSP18, 130mm travel, internal routing, 31.6mm, 425mm length L, XL: TranzX JD-YSP18, 150mm travel, internal routing, 31.6mm, 470mm length
  • Handlebar
    Bontrager Rhythm Comp, alloy, 31.8mm, 15mm rise, 750mm width
  • Grips
    Bontrager XR Trail Comp, nylon lock-on
  • Stem
    S: Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 50mm length M: Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 60mm length L, XL: Bontrager Comp, 31.8mm, Blendr compatible, 7 degree, 70mm length
  • Headset
    FSA IS-2, 1-1/8'' top, 1.5'' bottom
  • Brake
    SRAM Level Bronze 4-piston hydraulic disk
  • Brake rotor
    SRAM CenterLine, 6-bolt, round edge, 160mm
  • Brake rotor
    SRAM CenterLine, 6-bolt, round edge, 180mm
  • Rotor size
    Max brake rotor sizes: 180mm front & rear
  • Bag
    Farley compression harness, up to 915 cu in (15L)
  • Bag
    S: Adventure Boss full-frame bag, 140 cu in (2.3L) M: Adventure Boss full-frame bag, 207 cu in (3.4L) L: Adventure Boss full-frame bag, 232 cu in (3.8L) XL: Adventure Boss full-frame bag, 305 cu in (5L)
  • Cargo rack
    Farley custom front rack, Lava gloss
  • Cargo rack
    Farley custom rear rack, Lava gloss
  • Weight
    M - 18.30 kg / 40.35 lbs (with tubes)
  • Weight limit
    This bike has a maximum total weight limit (combined weight of bicycle, rider, and cargo) of 300 pounds (136 kg).
Sizing Information
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