Specialized S-Works Crux 5 FACT 12r Carbon Frame – The benchmark for Gravel Racing

The Specialized S-Works Crux 5 frame represents the pinnacle of innovation in the world of gravel racing. Designed for those seeking uncompromising performance, it combines extremely low weight, high stiffness, aerodynamics, and incredibly precise handling on every type of terrain.

Weighing just 789 grams, the S-Works Crux 5 FACT 12r Carbon frame is one of the lightest ever produced by Specialized, offering a perfect balance of efficiency, responsiveness, and control. Every watt from the rider is transformed into speed, making it the ideal choice for gravel competitions, endurance races, and high-performance rides.

Why choose the Specialized S-Works Crux 5 frame

The "Eat My Dust" philosophy encapsulates the essence of the Crux 5: a bike developed to be the fastest on real gravel routes. It's not just incredibly light, but it has been designed and tested on race terrains with professional cyclists to achieve the best possible lap time.

Thanks to Rider First Engineered™ geometry, every size guarantees the same dynamic behavior, ensuring precise handling, stability, and comfort even on the most technical routes.

Main features

• Use: Gravel Racing
• FACT 12r carbon frame
• Frame weight: 789 g
• FACT 12r carbon fork
• BSA 68 mm threaded bottom bracket
• Compatible with modern drivetrains thanks to the UDH (Universal Derailleur Hanger) dropout

Technical specifications

Frame

• S-Works Crux 5 FACT 12r Carbon
• Rider First Engineered™ technology
• Threaded BB
• 12x142 mm rear thru-axle
• Flat Mount disc brake attachment
• UDH (Universal Derailleur Hanger) dropout

Fork

• S-Works FACT Carbon
• 12x100 mm thru-axle
• Flat Mount disc brake attachment

Cockpit

Seatpost

• S-Works Tarmac SL8 Carbon Seat Post
• FACT Carbon
• 15 mm offset
• Lightweight Saddle Clamp

Seatpost clamp

• Integrated Wedge

Weight

• Frame weight: 789 g
• Overall weight: 1.63 kg (3 lb, 9.5 oz)
• Weight detected on size: 56

Product details

• Product ID: 294842

Please Note

Technical specifications may change without notice based on component availability.
Product images are for illustrative purposes only and may not exactly reflect the described features.

Specialized S-Works Crux 5: uncompromising speed

If your goal is to excel in gravel competitions or build one of the lightest and most performing bicycles available on the market, the Specialized S-Works Crux 5 FACT 12r Carbon frame is the ideal choice. The combination of extremely low weight, advanced manufacturing technology, and competition-optimized geometry makes it the benchmark for high-performance gravel enthusiasts.

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.