Trek

2021 Trek FX 4 Disc

Previous used estimate

$366 - $376

Actual value depends on condition, size, and local demand.

2021 Trek FX 4 Disc

Value Guide market data · 2021 Trek FX 4 Disc

12-month projected trend

9%

Direction and magnitude, not judgment

vs. category average

5%

Drops faster than category avg

Price over time - 2021 Trek FX 4 Disc

$1.1k$643$205MSRPMSRPYr 1Yr 2Yr 3Yr 4Yr 5Yr 6Yr 7Yr 7Yr 8Yr 9Yr 10Yr 11Yr 12Yr 13Yr 14Yr 14Yr 15Yr 16Yr 17Yr 18Yr 19Yr 20Yr 20

Values based on actual sales data. Enter your bike's specifics to get a precise valuation.

All FX model years

Overview

About this bike

FX Sport 4 is where performance fitness bikes begin. A lightweight aluminum frame, a wealth of performance features, and a 1x11 drivetrain that simplifies shifting without sacrificing gear range give you the capability to take on longer commutes and faster recreational rides without sacrificing the versatility that has made FX Trek's best-selling lineup ever. It's right for you if... You've got goals to demolish, and you need a bike that can help you finish a 50-mile charity ride, your first sprint triathlon, your daily commute, or any other fitness milestone. You want a performance hybrid that's comfortable on longer rides with big hills and versatile enough to carry groceries home after your workout. The tech you get A lightweight aluminum frame, a carbon fork that absorbs road vibration, hydraulic disc brakes for all-weather stopping power, a Shimano Deore 1x11 drivetrain with a wide range of gears for hilly routes, rack and hidden fender mounts, fast-rolling Bontrager tires, IsoZone ergonomic grips, and compatibility with DuoTrap S so you can track your fitness gains. The final word If you have fitness goals, FX Sport 4 will help you cruise past them. It's the perfect combination of road bike speed and hybrid bike versatility: comfortable over the long haul, quick when you want to put the hammer down, and reliable in all weather conditions and a variety of road surfaces. Why you'll love it - The 1x drivetrain delivers a wide range of gearing with the simplicity of a single shifter - It's versatile and does whatever you want it to do, whether that's riding for fitness, commuting, or cruising to the farmer's market to pick up groceries - It's easy to accessorize with racks, a kickstand, fenders, lights, and more! - You can pair FX with your smartphone and send your ride data to your favorite fitness app when you add DuoTrap S

Specifications

Subtype
Fitness & Hybrid
Category
Hybrid
Component Fork
FX Carbon, rack and fender mounts, flat mount disc, 405mm axle-to-crown, ThruSkew 5mm QR
Component Hubs
Front: Formula DC-20, alloy, 6-bolt Rear: Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub
Component Size
Small, Medium, Large, X-Large
Component Stem
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree
Product Family
FX
Component Axles
Front: 100 x 5mm QR Rear: 135 x 5mm QR
Component Color
Dnister Black to Radioactive Red Fade
Component Frame
Alpha Gold Aluminum, DuoTrap S compatible, internal cable routing, flat mount disc, rack & fender mounts, 135 x 5mm QR
Component Tires
Bontrager H2 Comp, wire bead, 30tpi, 700x32c
Component Brakes
Shimano MT201 hydraulic disc, flat mount, 160mm rotor
Component Pedals
Bontrager Satellite City pedal
Component Saddle
Bontrager H1
Component Headset
1-1/8" threadless, sealed cartridge bearings
Component Crankset
ProWheel alloy, 175mm
Component Shifters
Shimano Deore M5100, 11 speed
Component Seat Post
Bontrager alloy, 27.2mm, 12mm offset, 330mm length
Component Chainrings
42T
Component Handlebars
Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise
Component Tape Grips
Bontrager Satellite IsoZone Plus, lock-on, ergonomic
Component Rear Derailleur
Shimano Deore M5100, long cage, Shadow Plus
Component Cassette Rear Cogs
Shimano Deore M5100, 11-51, 11 speed
Hubs
Front: Formula DC-20, alloy, 6-bolt Rear: Formula DC-22, alloy, 6-bolt, Shimano 8/9/10 freehub
Tires
Bontrager H2 Comp, wire bead, 30tpi, 700x32c
Crankset
ProWheel alloy, 175mm
Pedals
Bontrager Satellite City pedal
Saddle
Bontrager H1
Headset
1-1/8" threadless, sealed cartridge bearings
Rear Derailleur
Shimano Deore M5100, long cage, Shadow Plus
Stem
Bontrager Elite, 31.8mm, Blendr compatible, 7 degree
Axles
Front: 100 x 5mm QR Rear: 135 x 5mm QR
Brakes
Shimano MT201 hydraulic disc, flat mount, 160mm rotor
Chainrings
42T
Fork
FX Carbon, rack and fender mounts, flat mount disc, 405mm axle-to-crown, ThruSkew 5mm QR
Frame
Alpha Gold Aluminum, DuoTrap S compatible, internal cable routing, flat mount disc, rack & fender mounts, 135 x 5mm QR
Handlebars
Bontrager Satellite Plus IsoZone, alloy, 31.8mm, 15mm rise
Seat Post
Bontrager alloy, 27.2mm, 12mm offset, 330mm length
Shifters
Shimano Deore M5100, 11 speed
Tape/Grips
Bontrager Satellite IsoZone Plus, lock-on, ergonomic
Color
Dnister Black to Radioactive Red Fade
Size
X-Large
Cassette/Rear Cogs
Shimano Deore M5100, 11-51, 11 speed

What to check when buying used

Inspection

Frame condition

Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.

Inspection

Drivetrain wear

Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.

Inspection

Service history

Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.

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