Name: Aethos 2 Pro - Shimano Ultegra Di2 (2026)
Brand: Specialized
SKU: 97226-1149
Price: 5449.0 GBP
Availability: InStock

Aethos 2 Pro - Shimano Ultegra Di2 (2026)

£5,449.00

Free UK shipping available on all apparel and components

Break the Rules

With a 705g frame, the Aethos 2 is the lightest bike in its class. But weight was never the point. Built by breaking racing’s rules to deliver pure road riding bliss, it’s engineered to disappear beneath you: responsive, supple, and sublime. Now with increased tire clearance, refined components, and data-based fit-enhancing geometry, it brings that transcendent ride feel to more riders than ever. Aethos 2 breaks the rules, for the love of the ride.

Use: Performance Road Riding
Frameset: 705g FACT 10r Frame / FACT 10r Fork
Fit: Performance Endurance
Cockpit & Wheels: Roval Alpinist Integrated Cockpit II and CL II wheels
Drivetrain: Shimano Ultegra Di2

Technical Specifications

Frameset
Frame	Aethos 2 FACT 10r Carbon, Rider First Engineered™, Threaded BB, Hidden Cable Routing, 12x142mm thru-axle, flat-mount disc
Fork	Aethos 2 FACT 10r Carbon, 12x100mm thru-axle, flat-mount disc
Brakes
Front Brake	Shimano Ultegra BR-R8170, hydraulic disc
Rear Brake	Shimano Ultegra BR-R8170, hydraulic disc
Drivetrain
Bottom Bracket	Shimano Threaded BSA BB
Rear Derailleur	Shimano Ultegra Di2 R8150, 12-speed
Front Derailleur	Shimano Ultegra Di2 R8150, braze-on
Shift Levers	Shimano Ultegra Di2 R8170, hydraulic disc
Crankset	Shimano Ultegra R8100 with 4iiii Precision 3+ single-sided Power Meter, 52/36t
Cassette	Shimano Ultegra, 12-speed, 11-30t
Chain	Shimano XT M8100, 12-speed w/ quick link
Wheels & Tires
Inner Tubes	700x25-35, 50mm Presta Valve, TPU
Front Tyre	S-Works Turbo TLR Race Tire, 700x28c
Rear Tyre	S-Works Turbo TLR Race Tire, 700x28c
Front Wheel	Roval Alpinist CL II, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes, Tubeless Ready
Rear Wheel	Roval Alpinist CL II, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes, Tubeless Ready
Cockpit
Handlebars	Roval Alpinist Cockpit II, Integrated Bar/Stem
Saddle	Power Pro Mirror, Hollow Ti rails
Seatpost	Roval Alpinist Carbon Seatpost
Seat Binder	Specialized Alloy, 30mm
Tape	Supacaz Super Sticky Kush

Weight: 6.73 kg (14 lb, 13.4 oz), tubeless — measured on size 56cm; actual weight will vary by size.

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