Specialized Aethos Pro Road bike / Satin Red Sky Red Onyx

Specialized Aethos Pro Road bike | Satin Red Sky Red Onyx

BREAK THE RULES

What if we used every ounce of experience we’ve gained serving riders over the past 46 years and built a bike made simply for the love of riding? When we set out on this project, we promised ourselves that we would make a bike that elevated the moments when human and machine become one, when we lose ourselves dancing up a climb or carving through a turn. Well, we did it, and in keeping that promise, we broke every design, ride, and race rule along the way. And we’re not sorry.

AETHOS \(AY-THOSS\)

BASED ON THE GREEK WORD “ETHOS” (MEANING “CHARACTER”) THAT’S USED TO DESCRIBE THE GUIDING BELIEFS OR IDEALS THAT CHARACTERIZE A COMMUNITY.

ONE EPIPHANY

An almost out of body test lab experience birthed Aethos. Meditating on the breathing and swaying of a bike under load in the lab, lead engineer Peter Denk had an epiphany when he realized that true performance lies in the shape, not the material. After a few hundred thousand supercomputer simulations, we knew we were right.

“HEY, CARBON! SHAPE UP!”

A frame’s shape is what drives the vast majority of a bike’s performance. Through our obsessive simulation, we learned that tubes with subtle, elongated conical sections - aka our Continuous Curvature Design strategy - deliver the highest stiffness-to-weight ratio ever tested. Turns out the obsessive Germans at the Zedler Institute agree with us.

NO LAZY FIBERS

This discovery of shape driving performance then gave us the opportunity to improve the ride quality delivered by material and layup. We were able to eliminate traditional stiffness layers, reducing the plies necessary to build the bike by 11% compared to a Tarmac SL6. Utilizing longer, unbroken plies, every fiber is structural and reduces weight substantially. This ensures that the only thing along for the ride is you.

RULES? WHAT RULES?

Turns out, this bike may be *illegal in some circles. With Aethos, we chased ride quality, not a number, but we know a light, stiff, and balanced bike is magic at the pedals. The result? The lightest disc road frame ever produced with builds as light as 5.9kg, and all with the telepathic handling, response, and stiffness targets you’ve come to expect from every bike we make \(*Psst…don’t tell the UCI\).

PERFECTION IS IN THE DETAILS

From dropouts to derailleur hangers, no gram was overlooked. The same can be said about the approach of our partners at Roval Components. They’ve been working towards the same North Star of ride quality, and the 1248-gram Alpinist wheels and new Alpinist bar/stem combo were tailormade for Aethos and the ride of your life.

• •

FRAMESET
Frame	Aethos FACT 10R Carbon, Rider First Engineered™, Threaded BB, 12x142mm thru-axle, flat-mount disc
Fork	FACT Carbon, 12x100mm thru-axle, flat-mount disc
DRIVETRAIN
Shift levers	Shimano Ultegra Di2 R8170, hydraulic disc
Front derailleur	Shimano Ultegra Di2 R8150, braze-on
Rear derailleur	Shimano Ultegra Di2 R8150, 12-speed
Cassete	Shimano Ultegra, 12-speed, 11-30t
Chain	Shimano XT M8100, 12-speed w/ quick link
Crank set	Shimano Ultegra R81000 with 4iiiis Power Meter
Chainring	52/36T
Bb set	Shimano Threaded BSA BB
BRAKES
Brakes	Shimano Ultegra R8170, hydraulic disc
WHEELS & TIRES
Wheelset	Roval Alpinist CL, 21mm internal width carbon rim, 33mm depth, Win Tunnel Engineered, DT for Roval 350 hub, DT Swiss Aerolite spokes,Tubeless Ready
Inner Tubes	700x20-28, 48mm Presta Valve
Tires	S-works Turbo 2BR, 700x28mm
HANDLEBAR & SADDLE
Handlebar	S-Works Short & Shallow, 123mm Drop, 75mm Reach w/Di2 Hole
Stem	Specialized Pro SL, alloy, 4-bolt
Tape	Supacaz Super Sticky Kush
Saddle	Body Geometry Power Pro, hollow titaniu m rails

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