Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Trek
2018 Trek FX S 4
Value Guide market data · 2018 Trek FX S 4
12-month trend
6%
Direction and magnitude, not judgment
vs. category average
7%
Drops faster than category avg
Price over time - 2018 Trek FX S 4
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All FX model years
2026$2,139 - $2,484▲ 15% vs. 2018
2025$2,790 - $3,240▲ 50% vs. 2018
2024$2,604 - $3,024▲ 40% vs. 2018
2023$2,604 - $3,024▲ 40% vs. 2018
2022$2,604 - $3,024▲ 40% vs. 2018
2021$2,046 - $2,376▲ 10% vs. 2018
2020$2,046 - $2,376▲ 10% vs. 2018
2019$1,953 - $2,268▲ 5% vs. 2018
2018$1,860 - $2,160Currently viewing
2017$1,953 - $2,268▲ 5% vs. 2018
2013$409 - $475▼ 78% vs. 2018
2012$2,372 - $2,754▲ 28% vs. 2018
2011$2,492 - $2,894▲ 34% vs. 2018
2010$2,492 - $2,894▲ 34% vs. 20182018 FX S 4 lineup
Overview
About this bike
2018 Trek FX S 4 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- Bontrager Nebula, carbon
- Frame
- FX Alpha Gold Aluminum, DuoTrap S compatible, rack & fender mounts
Drivetrain
- Groupset
- Shimano Tiagra
- Bottom Bracket
- Sealed cartridge
- Chainrings
- 48/34
- Crankset
- Shimano R460
- Front Derailleur
- Shimano Tiagra
- Rear Derailleur
- Shimano RD-R350
- Shifters
- Shimano Tiagra, 10 speed
Brakes
- Brakes
- Tektro alloy linear-pull brakes, Tektro adjustable-reach alloy levers
Cockpit
- Handlebar
- Bontrager Satellite Plus IsoZone, 31.8mm, 15mm rise
- Headset
- VP Slimstak, sealed semi-cartridge bearings
- Saddle
- Bontrager H1
- Seatpost
- Bontrager SSR, 2-bolt head, 27.2mm, 12mm offset
- Stem
- Bontrager Elite, 31.8mm, 7 degree, w/computer & light mounts
- Grips
- Bontrager Satellite IsoZone Plus, lock-on, ergonomic
Wheels & Tires
- Hubs
- Formula TK31 alloy front hub; Formula TK32 alloy rear hub
- Tires
- Bontrager AW1 Hard-Case Lite, 700x28c
Pedals
- Pedals
- Nylon body w/alloy cage, toe clip & strap
Frame sizing
XS4'10"-5'2"
S5'2"-5'6"
M5'6"-5'10"
L5'10"-6'2"
XL6'2"-6'6"
M highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- Varies by size
- Reach
- Varies by size
- Wheelbase
- Varies by size
Industry standard. Sourced from catalog metadata.
What to check when buying used
Inspection
Drivetrain wear
Check chain stretch, cassette teeth, chainrings, and shifting under load before negotiating price.
Inspection
Wheel condition
Inspect rims, hubs, spokes, and bearing play; ask about the tire age and any prior wheel rebuilds.
Inspection
Service history
Ask for service records covering bearings, brakes, drivetrain, and any frame or fork warranty work.