Inspection
Frame condition
Inspect the frame, fork, welds, and high-stress areas for cracks, dents, or prior repairs.
Giant
2018 Giant Fathom 3
Value Guide market data · 2018 Giant Fathom 3
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All Fathom model years
2018 Fathom 3 lineup
Overview
About this bike
2018 Giant Fathom 3 value depends on condition, original build, frame material, service history, and current buyer demand.
Specifications
Frameset
- Frame
- Aluminum / ALUXX SL-grade aluminum, Semi-Internal Cable RoutingBB Standard:BB86/BB92, Press FitColor:Blue / Black
- Suspension
- Hardtail, 100mm
- Fork
- Suntour / SR Suntour Axon LO-RC, low speed compression and rebound adjust, 15mm thru-axle, OverDrive, 100mm travelTravel:100mmSpring Type:Air
Drivetrain
- Drivetrain
- 1 × 11
- Groupset
- SLX
- Bottom Bracket
- Shimano, Press fit
- Rear Derailleur
- Shimano SLX
- Crank
- Shimano SLX, 30T
- Shifters
- Shimano SLX
- Cassette
- Shimano SLX 11x46, 11-Speed
- Chain
- KMC X11-1
Brakes
- Brakes
- Shimano Hydraulic Disc / Shimano BR-M365, hydraulic disc, [F] 180mm, [R] 160mmType:Shimano Hydraulic Disc
- Brake Levers
- Shimano M365
Cockpit
- Seatpost
- Dropper / Giant Contact Switch, dropper, 30.9mmType:Dropper
- Stem
- Giant Connect
- Handlebar
- Giant Connect Trail
- Saddle
- Giant Contact Neutral
Wheels & Tires
- Wheels
- 29″ Aluminum
- Rims
- Giant XC-2 Disc, Tubeless
- Spokes
- Sapim Race, 14/15g
- Front Hub
- Giant Performance Tracker, sealed bearing, [F] 15mm thru-axle, [R] QR
- Rear Hub
- Giant Performance Tracker, sealed bearing, [F] 15mm thru-axle, [R] QR
- Tires
- Maxxis IKON, 29x2.2 Folding, EXO, Tubeless, 60 TPI
Pedals
- Pedals
- Platform, caged
Frame sizing
SMManufacturer sizing
MDManufacturer sizing
LGManufacturer sizing
XLManufacturer sizing
LG highlighted as most common resale size. Sourced from catalog metadata.
Geometry
- Stack
- 622
- Reach
- 441
- Top Tube Length
- 625
- Seat Tube Length
- 480
- Chainstay Length
- 442
- Wheelbase
- 1,142
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.