Specialized S-Works Aethos 2 Frame - Blue

Specialized S-Works Aethos 2 Frame – The world's lightest racing frame

Ride Beyond Limits – Push your limits, love the road

The Specialized S-Works Aethos 2 frame is a revolution for road cycling. Weighing only 595 grams, it is the lightest production racing frame in the world. But its mission is not just lightness: it was designed to offer a pure, smooth, and responsive ride, capable of making the bike "disappear" beneath you.

With more tire clearance, geometry optimized based on real rider data, and components selected for maximum efficiency, the Aethos 2 frame is the ultimate choice for those seeking endurance performance and comfort.

Main features

• Ideal Use: Performance Road Riding

• Fit / Geometry: Performance Endurance

• Weight (size 56): 1.24 kg (2 lb, 11.7 oz)

• Product code: 221567

Technical Specifications

Frame

• Model: S-Works Aethos 2

• Material: FACT 12r Carbon

• Technology: Rider First Engineered™

• Bottom Bracket: Threaded (Threaded BB)

• Cable Routing: Internal (Hidden Cable Routing)

• Brake Compatibility: Flat-mount disc

• Rear Axle: 12x142 mm thru-axle

Fork

• Model: S-Works Aethos 2

• Material: FACT 12r Carbon

• Front Axle: 12x100 mm thru-axle

• Brake Mount: Flat-mount disc

Cockpit

• Seatpost: Roval Alpinist carbon, with ultralight clamp

• Seat Clamp (Seat Binder): Specialized alloy, 30.0 mm with titanium bolt

Note Well

Technical specifications may change without notice depending on component availability.
The product images are purely indicative and may not exactly reflect the described features.

Choose the S-Works Aethos 2 to reach new levels of road performance: lightness, precision, and technology at the service of your passion for cycling.

Do you want to receive your bike ready for use? Don't forget to add the bike assembly service at the time of purchase! Discover all the details here: Francesconi bike assembly

A Complete Guide to Bike Sizes

Foreword: Not all bike sizes are the same

Each type of bike has a specific frame and often uses a different size scale. For example, a road bike with a 54cm frame might be considered a medium size by one brand, but a large by another.

Bicycle adjustment margins

Some types of bikes, like gravel bikes, offer a wide range of adjustments, adapting to different body types. Other models, however, have limitations in this regard. This is an important aspect to consider.

How to use size charts

We've created a simple guide to help you find the right bike size:

1. Check out our size charts for each bike type.
2. Learn more with specific tips to help you make the right choice.

Size Charts: Find Your Perfect Bike

Gravel and road bikes

Sizes are based on the length of the top tube (in cm), which determines the reach of the bike.

For gravel, measurements may vary slightly due to different geometries, but remain similar.

Mountain bike

MTBs are measured in inches, based on the seat tube.

Sizes also vary depending on the type of MTB: full-suspension , hardtail or fat bike .

Children's bikes

The size depends on the size of the wheels, often associated with age:

What to do with half measures?

If you are between two sizes:

• Comfort : Choose the larger size.
• Performance : Go for the smaller size.

Final tips for choosing

1. Consult the manufacturer's instructions : Always check the brand's guidelines.
2. Ask an expert : a specialized workshop can help you choose based on your height, ideal reach and goals.
3. Test the bike : If possible, test the model you intend to purchase.