MountainVerified spec

2020 Giant Fathom 29 1

Launched at $1,500

Own a 2020 Giant Fathom 29 1?

Track its value in your garage, or list it for sale locally in a few taps.

What a used one is worth

New

$771

$487 to $939

Like new

$733

$463 to $892

Excellent

$694

$438 to $845

Good

$578

$365 to $704

Fair

$424

$268 to $517

For parts

$231

$146 to $282

From the launch price, aged to 2026 and adjusted for condition. Guidance from our catalog, not an appraisal.

Fork: Rock Shock Recon RL 100mm, Solo Air, 15x110 Maxle Lite
Stem: Giant Contact
Tires: [F] Maxxis Forekaster 2, , EXO/TR[R]Maxxis 29x2.35 Rekon Race, foldable, , EXO/T
Brakes: Shimano MT400
Saddle: Giant Contact (neutral)
Wheels: Giant XCT 29” tubeless ready sleeve-joint rim, 25mm inner width
Cassette: SRAM SX Eagle, 11x50
Crankset: TruVativ Descendent 6k DUB, 30t
Seatpost: Giant Contact Switch dropper post with remote, 30.9
Shifters: SRAM SX Eagle
Handlebar: Giant Connect Trail, 780x31.8, [GA 690]
Rear derailleur: SRAM NX Eagle

L: Reach mm: 441; Stack mm: 622; Chainstay mm: 442; Wheelbase mm: 1142; Head angle deg: 69; Seat angle deg: 73.5
M: Reach mm: 425; Stack mm: 608; Chainstay mm: 442; Wheelbase mm: 1121; Head angle deg: 69; Seat angle deg: 73.5
S: Reach mm: 406; Stack mm: 603; Chainstay mm: 442; Wheelbase mm: 1100; Head angle deg: 69; Seat angle deg: 73.5
XL: Reach mm: 457; Stack mm: 636; Chainstay mm: 442; Wheelbase mm: 1163; Head angle deg: 69; Seat angle deg: 73.5

MSRP as listed on the Giant Group US product page for this model year, accessed 2026-09-21.

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