Compare: 2021 Giant Fathom 2 vs Fathom 29 2 vs Fathom 29 1 vs Fathom 1

Bike Comparison

Only show differences

	Fathom 22021 Giant	Fathom 29 22021 Giant	Fathom 29 12021 Giant	Fathom 12021 Giant

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Accessories

Ride Feel

Based on frame geometry and build specs.

Terrain

easyextreme

Handling

nimblestable

Fathom 2

Fathom 29 2

Fathom 29 1

Fathom 1

Other Trail bikes

Gear Range

A bike with lower gearing will be easier to ride up steep hills, while a higher top end means it will pedal faster down hills.

Lowest gear

(climbing)

25 mph

Fathom 2

26 mph

Fathom 29 2

24 mph

Fathom 29 1

22 mph

Fathom 1

Highest gear

(descending)

Spec Level

Based on build material and quality level of the frame, fork, wheelset, groupset, suspension system, and more.

Geometry

Specs

	Fathom 22021 Giant	Fathom 29 22021 Giant	Fathom 29 12021 Giant	Fathom 12021 Giant

Frame	ALUXX SL-Grade Aluminum Colors: Concrete; Black / Rosewood	ALUXX SL-Grade Aluminum Colors: Concrete; Black / Rosewood	ALUXX SL-Grade Aluminum Colors: Concrete; Black / Rosewood	ALUXX SL-Grade Aluminum Colors: Concrete; Black / Rosewood
Fork	Giant Crest 34 RCL, 130mm, Boost 15x110 Travel: 130mm Spring Type: Air	Giant Crest 34 RCL, 130mm, Boost 15x110 Travel: 130mm Spring Type: Air	Giant Crest 34 RCL, 130mm, Boost 15x110 Travel: 130mm Spring Type: Air	Giant Crest 34 RCL, 130mm, Boost 15x110 Travel: 130mm Spring Type: Air
Shock	N/A Spring Type: Air	N/A Spring Type: Air	N/A Spring Type: Air	N/A Spring Type: Air
Bottom Bracket	Praxis, press fit	Praxis, press fit	SRAM DUB, press fit	SRAM DUB, press fit
Stem	Giant Contact TR 35	Giant Contact TR 35	Giant Contact TR 35	Giant Contact TR 35
Handlebar	Giant Contact Trail, 35	Giant Contact Trail, 35	Giant Contact Trail, 35	Giant Contact Trail, 35
Saddle	Giant Romero	Giant Romero	Giant Romero	Giant Romero
Seatpost	Giant Contact Switch dropper post with remote, 30.9	Giant Contact Switch dropper post with remote, 30.9	Giant Contact Switch dropper post with remote, 30.9	Giant Contact Switch dropper post with remote, 30.9
Pedals	N/A	N/A	N/A	N/A

Groupset

Rear Derailleur	Shimano Deore, Shadow+	Shimano Deore, Shadow+	SRAM NX Eagle	SRAM NX Eagle
Front Derailleur	N/A	N/A	N/A	N/A
Crank	Praxis Cadet Boost, 30t	Praxis Cadet Boost, 30t	SRAM SX Eagle, DUB, 30t	SRAM SX Eagle, DUB, 30t
Shifters	Shimano Deore	Shimano Deore	SRAM SX Eagle	SRAM SX Eagle
Cassette	Shimano Deore, 12-speed, 10x51	Shimano Deore, 12-speed, 10x51	SRAM SX Eagle, 12-speed, 11x50	SRAM SX Eagle, 12-speed, 11x50
Chain	Shimano	Shimano	SRAM SX Eagle	SRAM SX Eagle
Brakes	Tektro TKD143 [F&R] 2-Piston, 180mm Rotors [F&R]	Tektro TKD143 [F&R] 2-Piston, 180mm Rotors [F&R]	[F] Shimano MT420 (4-Piston), 180mm Rotor, [R] Shimano MT400 2-Piston 180mm Rotor	[F] Shimano MT420 (4-Piston), 180mm Rotor, [R] Shimano MT400 2-Piston 180mm Rotor
Brake Levers	Tektro TKD143	Tektro TKD143	Shimano MT401	Shimano MT401

Wheels

Rims	Giant AM 27.5 wheelset, alloy, 30mm inner	Giant AM 29 wheelset, alloy, 30mm inner	Giant AM 29 wheelset, alloy, 30mm inner	Giant AM 27.5 wheelset, alloy, 30mm inner
Spokes	Sapim	Sapim	Sapim	Sapim
Front Hub	Shimano Boost [F] 15x110 [R] 12x148, sealed bearing	Shimano Boost [F] 15x110 [R] 12x148, sealed bearing	Giant Performance Tracker, [F] Boost 15x110mm [R] Boost 12x148mm	Giant Performance Tracker, [F] Boost 15x110mm [R] Boost 12x148mm
Rear Hub	Shimano Boost [F] 15x110 [R] 12x148, sealed bearing	Shimano Boost [F] 15x110 [R] 12x148, sealed bearing	Giant Performance Tracker, [F] Boost 15x110mm [R] Boost 12x148mm	Giant Performance Tracker, [F] Boost 15x110mm [R] Boost 12x148mm
Tires	Maxxis Ardent Race, tubeless, 27.5x2.6, foldable, TR	[F] Maxxis DHF, tubeless, 29x2.5, WT, foldable, EXO, TR [R] Maxxis Aggressor, tubeless, 29x2.5, WT, foldable, EXO, TR	[F] Maxxis DHF, tubeless, 29x2.5, WT, foldable, EXO, TR [R] Maxxis Aggressor, tubeless, 29x2.5, WT, foldable, EXO, TR	Maxxis Ardent Race, tubeless, 27.5x2.6, foldable, TR

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