VelopediaBicycle Archive · Specification report

2020 Giant Fathom 29 1

Velopedia Archive ID 900003048

Overview

Model year2020
BrandGiant
ModelFathom 29 1
Bicycle typeMountain
Archive ID900003048
Original MSRP$1,500.00
ColorsMetallic Navy
SizesS; M; L; XL

Frameset

Frame constructionALUXX SL-Grade Aluminum
Frame materialAluminum
ForkRock Shock Recon RL 100mm, Solo Air, 15x110 Maxle Lite
Rear shockN/A

Drivetrain

ShiftersSRAM SX Eagle
Front derailleurN/A
Rear derailleurSRAM NX Eagle
CranksetTruVativ Descendent 6k DUB, 30t
Bottom bracketSRAM DUB, press fit
CassetteSRAM SX Eagle, 11x50
ChainSRAM SX Eagle
PedalsN/A

Brakes

BrakesShimano MT400

Cockpit & contact points

HandlebarGiant Connect Trail, 780x31.8, [GA 690]
StemGiant Contact
SaddleGiant Contact (neutral)
SeatpostGiant Contact Switch dropper post with remote, 30.9

Wheels & tires

Hubs[F] Giant Tracker Performance Boost 15x110, sealed bearing [R] Giant Tracker Giant Sport Boost QR 141, loose ball
RimsGiant XCT 29” tubeless ready sleeve-joint rim, 25mm inner width
SpokesSapim
Front tire[F] Maxxis Forekaster 2, , EXO/TR[R]Maxxis 29x2.35 Rekon Race, foldable, , EXO/T
Rear tire[F] Maxxis Forekaster 2, , EXO/TR[R]Maxxis 29x2.35 Rekon Race, foldable, , EXO/T

Geometry · S

Seat tube390 mm
Top tube585 mm
Head tube95 mm
Head-tube angle69°
Seat-tube angle73.5°
Chainstay / rear center442 mm
Wheelbase1100 mm
Bottom-bracket drop55 mm
Reach406 mm
Stack603 mm
Standover height700 mm
Fork offset / rake42 mm
Trail100.5 mm
Crank length170 mm
Stem length60 mm
Handlebar width780 mm
Wheel size29"

Geometry · M

Seat tube445 mm
Top tube605 mm
Head tube100 mm
Head-tube angle69°
Seat-tube angle73.5°
Chainstay / rear center442 mm
Wheelbase1121 mm
Bottom-bracket drop55 mm
Reach425 mm
Stack608 mm
Standover height739 mm
Fork offset / rake42 mm
Trail100.5 mm
Crank length175 mm
Stem length70 mm
Handlebar width780 mm
Wheel size29"

Geometry · L

Seat tube480 mm
Top tube625 mm
Head tube115 mm
Head-tube angle69°
Seat-tube angle73.5°
Chainstay / rear center442 mm
Wheelbase1142 mm
Bottom-bracket drop55 mm
Reach441 mm
Stack622 mm
Standover height751 mm
Fork offset / rake42 mm
Trail100.5 mm
Crank length175 mm
Stem length80 mm
Handlebar width780 mm
Wheel size29"

Geometry · XL

Seat tube530 mm
Top tube645 mm
Head tube130 mm
Head-tube angle69°
Seat-tube angle73.5°
Chainstay / rear center442 mm
Wheelbase1163 mm
Bottom-bracket drop55 mm
Reach457 mm
Stack636 mm
Standover height782 mm
Fork offset / rake42 mm
Trail100.5 mm
Crank length175 mm
Stem length90 mm
Handlebar width780 mm
Wheel size29"

Manufacturer-published archive data. Confirm exact standards and dimensions before ordering parts or performing service. Generated by Velopedia on October 23, 2026.