Specialized Aethos 2 Pro Ultegra Di2

Specialized Aethos 2 Pro Ultegra Di2 Overview

The Specialized Aethos 2 Pro Ultegra Di2 is a lightweight road bike built with an Aethos 2 FACT 10r carbon frame, matching FACT 10r carbon fork, and Shimano Ultegra Di2 12-speed drivetrain. The frame uses Rider First Engineered construction, a threaded bottom bracket, hidden cable routing, 12x142mm rear thru-axle spacing, and flat-mount disc brake compatibility.

This build pairs Shimano Ultegra Di2 R8170 hydraulic disc shift levers with Ultegra Di2 R8150 front and rear derailleurs. The drivetrain includes a Shimano Ultegra 11-30t 12-speed cassette, Shimano XT CN-M8100 12-speed chain, and Shimano Ultegra R8100 52/36t crankset with a 4iiii Precision 3+ single-sided Power Meter.

The bike uses Roval Alpinist CL II Tubeless Ready carbon wheels with 33mm-deep rims, 21mm internal width, DT for Roval 350 hubs, and DT Swiss Aerolite spokes. S-Works Turbo TLR Race 700x28c tires, a Roval Alpinist Cockpit II integrated bar and stem, Power Pro Mirror saddle with Hollow Ti rails, and a Roval Alpinist Carbon Seatpost complete the build. The tubeless weight is 6.73 kg / 14 lb 13.4 oz in size 56.

Key Features of Specialized Aethos 2 Pro Ultegra Di2

• Aethos 2 FACT 10r carbon frame and fork create a lightweight road platform with hidden cable routing and flat-mount disc compatibility.
• Shimano Ultegra Di2 R8170 shift levers and R8150 derailleurs deliver 12-speed Di2 shifting.
• Shimano Ultegra BR-R8170 hydraulic disc brakes handle braking at the front and rear.
• Shimano Ultegra R8100 52/36t crankset includes a 4iiii Precision 3+ single-sided Power Meter.
• Shimano Ultegra 12-speed 11-30t cassette gives the drivetrain its stated gear range.
• Roval Alpinist CL II Tubeless Ready carbon wheels use 33mm-deep rims, 21mm internal width, DT for Roval 350 hubs, and DT Swiss Aerolite spokes.
• S-Works Turbo TLR Race 700x28c tires match the lightweight road-focused build.
• Roval Alpinist Cockpit II integrated bar and stem gives the front end a clean one-piece cockpit setup.

Ride Use

This bike is built for lightweight road riding, supported by its FACT 10r carbon frame, FACT 10r carbon fork, Roval Alpinist CL II carbon wheels, and 6.73 kg tubeless weight. The Shimano Ultegra Di2 12-speed drivetrain, Ultegra hydraulic disc brakes, 700x28c tires, and integrated cockpit give it a premium road-focused component package.

Why Choose This Bike

Choose this bike for a lightweight road build centered on the Aethos 2 FACT 10r carbon frame and Shimano Ultegra Di2 drivetrain. It combines Ultegra hydraulic disc brakes, an Ultegra crankset with a 4iiii Precision 3+ single-sided Power Meter, Roval Alpinist CL II Tubeless Ready carbon wheels, S-Works Turbo TLR Race tires, and a 6.73 kg tubeless weight in size 56. Color options are Gloss Shadow Silver and Gloss Red Sky, with frame and fork covered by a lifetime warranty for the original owner and other Specialized-branded parts covered for 2 years.