Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Giant
2018 Giant Fathom 1
Value Guide market data · 2018 Giant Fathom 1
12-month trend
6%
Direction and magnitude, not judgment
vs. category average
— %
No category comparison available
Price over time - 2018 Giant Fathom 1
Values based on actual sales data. Enter your bike's specifics to get a precise valuation.
All Fathom model years
2018 Fathom 1 lineup
Overview
About this bike
2018 Giant Fathom 1 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Fork
- SR Suntour Axon LO-RC, low speed compression and rebound adjust, 15mm thru-axle, OverDrive, 120mm travel
- Frame
- ALUXX SL-grade aluminum, Semi-Internal Cable Routing
Drivetrain
- Groupset
- 2018 Giant Fathom 1
- Crankset
- Shimano SLX
- Bottom Bracket
- Shimano, Press fit
- Chain
- KMC X11-1
- Rear Derailleur
- Shimano SLX
- Cassette/Rear Cogs
- Shimano SLX 11x46, 11-Speed
- Chainrings
- 30T
- Shifters
- Shimano SLX
Brakes
- Brake Levers
- Shimano M365
- Brakes
- Shimano BR-M365, hydraulic disc, [F] 180mm, [R] 160mm
Cockpit
- Saddle
- Giant Contact Neutral
- Stem
- Giant Connect
- Handlebars
- Giant Connect Trail
- Seat Post
- Giant Contact Switch, dropper, 30.9mm
Wheels & Tires
- Hubs
- Giant Performance Tracker, sealed bearing, [F] 15mm thru-axle, [R] QR
- Tires
- Maxxis Ardent, 27.5x2.25, Folding, Tubeless, 60TPI
- Spokes
- Sapim Race, 14/15g
Pedals
- Pedals
- Platform, caged
Accessories
- Rims/Wheels
- Giant XC-1 Disc, Tubeless
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.
Inspection
Suspension service
Confirm fork lowers and rear shock service intervals; ask for the most recent service receipts.
Inspection
Frame pivots & bearings
Cycle the suspension off the bike to feel for play, grit, or noise in pivot bearings.