Compare: 2021 Specialized Aethos Expert vs Aethos Pro - Ultegra Di2 vs Aethos Pro - SRAM Force eTap AXS vs S-Works Aethos - SRAM Red eTap AXS vs S-Works Aethos - Founder's Edition

Overview
Ride Feel
Gearing
Spec Level
Geometry
Specs

Bike Comparison

Only show differences

	Aethos Expert2021 Specialized	Aethos Pro - Ultegra Di22021 Specialized	Aethos Pro - SRAM Force eTap AXS2021 Specialized	S-Works Aethos - SRAM Red eTap AXS2021 Specialized	S-Works Aethos - Founder's Edition2021 Specialized

MSRP	$5,500	$7,800	$8,200	$13,500	$14,500
Where to Buy	— $1 At	$6,999 At TPC $7,949 At TPC	$7,739 3% off At TPC	— $1 At	— $1 At
Category	Race	Race	Race	Race	Race
	7.6	8.2	8.1	9.8	10.0
Frame	Carbon	Carbon	Carbon	Carbon	Carbon
Fork	Carbon	Carbon	Carbon	Carbon	Carbon
Wheels	Aluminum	Carbon	Carbon	Carbon	Carbon
Wheel Size	700c	700c	700c	700c	700c
Brakes	Hydraulic Disc	Hydraulic Disc	Hydraulic Disc	Hydraulic Disc	Hydraulic Disc
Groupset	Ultegra Di2	Ultegra Di2	Force eTap	RED AXS	Dura-Ace Di2
Drivetrain	2 × 11 Electronic	2 × 11 Electronic	2 × 12 Electronic	2 × 12 Electronic	2 × 11 Electronic
Power Meter	None	None	None	Red AXS	Dura-Ace
Brand Site	specialized.com	specialized.com	specialized.com	specialized.com	specialized.com

Similar Bikes

Accessories

Ride Feel

Based on frame geometry and build specs.

Rider Position

relaxedaggressive

Terrain

smoothrugged

Aethos Expert

Aethos Pro - Ultegra Di2

Aethos Pro - SRAM Force eTap AXS

S-Works Aethos - SRAM Red eTap AXS

S-Works Aethos - Founder's Edition

Other Race 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)

41 mph

S-Works Aethos - SRAM Red eTap AXS

41 mph

S-Works Aethos - Founder's Edition

Highest gear

(descending)

Spec Level

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

Geometry

Specs

	Aethos Expert2021 Specialized	Aethos Pro - Ultegra Di22021 Specialized	Aethos Pro - SRAM Force eTap AXS2021 Specialized	S-Works Aethos - SRAM Red eTap AXS2021 Specialized	S-Works Aethos - Founder's Edition2021 Specialized

Frame	Aethos FACT 10R Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc BB Standard: BSA, 68mm, Threaded Colors: Gloss Ice Blue / Teal Tint/flake Silver; Satin Red Tint / Dream Silver	Aethos FACT 10r Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc BB Standard: BSA, 68mm, Threaded Colors: Gloss Ice Blue / Teal Tint/flake Silver; Satin Red Tint / Dream Silver	Aethos FACT 10R Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc BB Standard: BSA, 68mm, Threaded Colors: Gloss Ice Blue / Teal Tint/flake Silver; Satin Red Tint / Dream Silver	S-Works Aethos FACT 12r Carbon, Rider First Engineered™, Threaded BB, Electronic cable routing only, 12x142mm thru-axle, flat-mount disc BB Standard: BSA, 68mm, Threaded Colors: Gloss Ice Blue / Teal Tint/flake Silver; Satin Red Tint / Dream Silver	S-Works Aethos FACT 12r Carbon, Rider First Engineered™, Threaded BB, Electronic cable routing only, 12x142mm thru-axle, flat-mount disc BB Standard: BSA, 68mm, Threaded Colors: Gloss Ice Blue / Teal Tint/flake Silver; Satin Red Tint / Dream Silver
Fork	FACT Carbon, 12x100mm thru-axle, flat-mount disc	FACT Carbon, 12x100mm thru-axle, flat-mount disc	FACT Carbon, 12x100mm thru-axle, flat-mount disc	S-Works FACT Carbon, 12x100mm thru-axle, flat-mount disc	S-Works FACT Carbon, 12x100mm thru-axle, flat-mount disc
Bottom Bracket	Shimano threaded	BSA, 68mm, threaded	SRAM DUB BSA 68	SRAM DUB BSA 68	Shimano Dura-Ace, BB-R9100
Stem	Specialized Pro SL, alloy, 4-bolt	Specialized Pro SL, alloy, 4-bolt	Specialized Pro SL, alloy, 4-bolt	S-Works SL, alloy, titanium bolts, 6-degree rise
Handlebar	Specialized Expert Shallow Drop, alloy, 125mm drop x 75mm reach	S-Works Short & Shallow	S-Works Short & Shallow	S-Works Short & Shallow	Roval Alpinist Cockpit, one-piece bar/stem combo, carbon
Saddle	Body Geometry Power Expert, Hollow Titanium Rails	Body Geometry Power Pro, Hollow Titanium Rails, Carbon Fiber Base	Body Geometry Power Pro, Hollow Titanium Rails, Carbon Fiber Base	Body Geometry S-Works Power, Carbon Fiber Rails, Carbon Fiber Base	Body Geometry S-Works Romin Evo, Carbon Fiber Rails, Carbon Fiber Base
Seatpost	Roval Alpinist Carbon Seatpost	Roval Alpinist Carbon Seatpost	Roval Alpinist Carbon Seatpost	Roval Alpinist Carbon Seatpost	Roval Alpinist Carbon Seatpost
Pedals		PEDAL, TEST RIDE PEDALS PROVIDED BY SPECIALIZED

Groupset

Rear Derailleur	Shimano Ultegra Di2 R8050, GS medium cage	Shimano Ultegra Di2 R8050, GS medium cage	SRAM Force eTAP AXS, 12-speed	SRAM RED eTAP AXS, 12-speed	Shimano Dura-Ace Di2 R9150, 11-speed
Front Derailleur	Shimano Ultegra Di2 R8050, braze-on	Shimano Ultegra Di2 R8050, braze-on	SRAM Force eTAP AXS, braze-on	SRAM RED eTAP AXS, braze-on	Shimano Dura-Ace Di2 R9150, braze-on
Crank	Shimano Ultegra R8000, HollowTech 2, 11-speed	Shimano Ultegra R8000, HollowTech 2, 11-speed	SRAM FC Force DUB, 12-speed	SRAM RED AXS Power Meter, 48/35T	Shimano Dura-Ace R9100, HollowTech 2, 11-speed, Dual-sided Powermeter, 52/36T
Power Meter				SRAM RED AXS Power Meter, 48/35T	Shimano Dura-Ace R9100, HollowTech 2, 11-speed, Dual-sided Powermeter, 52/36T
Shifters	Shimano Ultegra Di2 Disc R8070				Shimano Dura-Ace R9170, hydraulic disc
Cassette	Shimano Ultegra R8000, 11-speed, 11-30t	Shimano Ultegra R8000, 11-speed, 11-30t	SRAM Force, XG-1270, 12-speed, 10-33t	SRAM RED XG-1290, 12-speed, 10-33t	Shimano Dura-Ace R9100, 11-speed, 11-30t
Chain	Shimano Ultegra, 11-speed	Shimano Ultegra, 11-speed	SRAM Force, 12-speed	SRAM RED, 12-speed	Shimano Dura-Ace, 11-speed
Brakes	Front: Shimano Ultegra R8070, hydraulic disc, Rear: Shimano Ultegra R8070, hydraulic disc	Front: Shimano Ultegra R8070, hydraulic disc, Rear: Shimano Ultegra R8070, hydraulic disc	Front: SRAM Force eTAP, hydraulic disc, Rear: SRAM Force eTAP, hydraulic disc	Front: SRAM RED eTAP AXS, hydraulic disc, Rear: SRAM RED eTAP AXS, hydraulic disc	Front: Shimano Dura-Ace R9170, hydraulic disc, Rear: Shimano Dura-Ace R9170, hydraulic disc

Wheels

Rims	Front: DT R470 Disc, sealed cartridge hubs, 14g spokes, 24h, Rear: DT R470 Disc, sealed cartridge hubs, 14g spokes, 24h	Front: Roval Alpinist CL, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes, Rear: Roval Alpinist CL, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes	Front: Roval Alpinist CL, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes, Rear: Roval Alpinist CL, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes	Front: Roval Alpinist CLX, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, Roval AFD hub, 21h, DT Swiss Aerolite spokes, Rear: Roval Alpinist CLX, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, Roval AFD hub, 24h, DT Swiss Aerolite spokes	Front: Roval Alpinist CLX, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, Roval AFD hub, 21h, DT Swiss Aerolite spokes, Rear: Roval Alpinist CLX, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, Roval AFD hub, 24h, DT Swiss Aerolite spokes
Tires	Front: S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm, Rear: S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm	Front: S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm, Rear: S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm	Front: S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm, Rear: S-Works Turbo, 120 TPI, folding bead, BlackBelt protection, 700x26mm	Front: Turbo Cotton, 320 TPI, 700x26mm, Rear: Turbo Cotton, 320 TPI, 700x26mm	Front: Turbo Cotton - Black Sidewall, 320 TPI, 700x26mm, Rear: Turbo Cotton - Black Sidewall, 320 TPI, 700x26mm

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