Cervélo Áspero-5 Force AXS 1 Bicycle – Aerodynamic Gravel Race

The fastest gravel bike, period

The Cervélo Áspero-5 Force AXS 1 is a gravel bicycle designed to achieve maximum performance on dirt roads, fast gravel, and competitive gravel courses. The new Áspero-5 draws on the experience gained by Cervélo over 30 years of research into aerodynamics and performance, applied for the first time in such an extreme way to the world of gravel racing.

Compared to the previous model, the new Áspero-5 is 37 watts faster, while the stated advantage over its closest competitor is 34 watts. A result achieved through careful aerodynamic design of the frame and components, without sacrificing lightness.

With clearance for tires up to 45 mm, an integrated storage compartment in the downtube, and a threaded bottom bracket, the Áspero-5 is a gravel bike ready for competition right out of the box.

The new Áspero-5 made its racing debut in the exclusive rainbow livery in the hands of UCI Gravel World Champion Marianne Vos, becoming a platform designed for cyclists looking for speed, efficiency, and racing performance.

The shape of speed

Aerodynamics is one of the core elements of the Cervélo Áspero-5. The new generation has been developed to be 37 watts faster than the previous model and 34 watts faster than its closest competitor.

Cervélo's experience in the field of aerodynamics has led to the creation of a gravel bike where the frame and components work together to reduce drag.

An important role is played by the integrated cockpit with aerodynamic handlebars and stem, which alone contribute to a saving of almost 6 watts.

More aerodynamic, without sacrificing weight

Despite the introduction of a significantly larger surface area dedicated to improving aerodynamic performance, the new Cervélo Áspero-5 has managed to reduce the weight by 66 grams compared to the previous model.

The result is a gravel race platform designed to combine aerodynamic efficiency, lightness, and the ability to tackle even the most demanding courses.

Mixed & Matched Tire Geometry

The new Áspero-5 introduces a specific solution for managing geometry based on tire configuration.

With tires of the same size, for example 42 mm front and rear, the bike offers a stable, confident ride ready to tackle the most technical gravel courses.

To further increase aerodynamic efficiency and refine handling on less technical terrain, you can instead use a Mixed configuration, with a tire width difference of up to 4 mm. An example is the 40 mm front and 44 mm rear combination.

This solution allows you to adapt the bike's behavior to the type of terrain and take advantage of a specific setup to maximize speed and control.

In-frame storage compartment

The Cervélo Áspero-5 integrates an internal storage system into the down tube, derived from the technology first introduced on the P-series triathlon bike.

The in-frame storage compartment allows you to carry an inner tube, tools, and a repair kit inside the bike, keeping the equipment protected from the wind and positioned in an area optimized for weight distribution.

The system is designed to offer high aerodynamic efficiency and represents a practical solution for the needs of gravel competitions and longer rides.

Technical specifications

Frame and components

• Weight: the Cervélo Áspero-5 Force AXS 1 has a declared weight of 7.89 kg.

• Fork: it is equipped with the Cervélo All-Carbon, Tapered Aspero-5 Fork, an all-carbon fork with a tapered steerer tube.

• Handlebar: the cockpit uses the Cervélo HB16 Carbon, made of carbon and with a 31.8 mm clamp.

• Stem: the Cervélo ST31 Carbon is used, also made of carbon.

• Seatpost: the bike is equipped with Cervélo SP27 Carbon.

• Saddle: the equipment includes a Fizik Vento Argo X3.

• Bottom bracket: a SRAM DUB Wide Ceramic, T47 BBright is present, with a threaded bottom bracket.

• Headset: the headset is an FSA IS2, with specifications 1-1/4, 45° x 45° / 1-1/2, 36° x 45°.

Handlebar dimensions

The handlebar width varies based on the bike size:

• Size 48: 36 cm wide handlebar.

• Size 51: 38 cm wide handlebar.

• Size 54: 40 cm wide handlebar.

• Size 56: 40 cm wide handlebar.

• Size 58: 42 cm wide handlebar.

• Size 61: 42 cm wide handlebar.

Stem length

The stem length is also specific to each size:

• Size 48: 80 mm stem.

• Size 51: 80 mm stem.

• Size 54: 90 mm stem.

• Size 56: 90 mm stem.

• Size 58: 100 mm stem.

• Size 61: 100 mm stem.

Seatpost

The Cervélo SP27 Carbon is configured with a 0 mm setback for all available sizes:

• Size 48: 0 mm.

• Size 51: 0 mm.

• Size 54: 0 mm.

• Size 56: 0 mm.

• Size 58: 0 mm.

• Size 61: 0 mm.

Thru-axles

The Áspero-5 uses specific Cervélo aero thru-axles for the front and rear:

• Front: Cervélo Aero Thru Axle Front, M12x1.5 mm, with a length of 122 mm.

• Rear: Cervélo Aero Thru Axle Rear, M12x1.0 mm, with a length of 169 mm.

Wheels

The configuration features Reserve GR wheels paired with DT Swiss 350 hubs.

• Front wheel: Reserve 48 GR with DT Swiss 350 hub, 12x100 mm axle, 24 holes, Centerlock system, and tubeless compatibility.

• Rear wheel: Reserve 53 GR with DT Swiss 350 hub, 12x142 mm axle, 24 holes, Centerlock system, and XDR freehub. The rear wheel is also compatible with tubeless tires.

Tires

The bike comes with Vittoria Corsa Pro Control TLR G2.0 tires in the 700x42c size.

The Áspero-5 frame also offers clearance for tires up to 45 mm, allowing you to adapt the bike's setup to the characteristics of the route.

Drivetrain and braking system

The drivetrain combines SRAM Force AXS E1 and SRAM X0 Eagle AXS T-Type components:

• Brake levers: SRAM Force AXS E1.

• Crankset: SRAM Force 1 AXS E1 with 48-tooth aero chainring, DUB Wide system, and integrated power meter.

• Chain: SRAM X0 Eagle T-Type.

• Cassette: SRAM X0 Eagle T-Type 12-speed, with 10-52T gearing.

• Rear derailleur: SRAM X0 Eagle AXS T-Type.

• Brake rotors: SRAM Paceline Centerlock.

Crank arm length

The crank arm length varies depending on the size and system used:

• Size 48: 165 mm with SRAM, 170 mm with Shimano.

• Size 51: 165 mm with SRAM, 170 mm with Shimano.

• Size 54: 170 mm.

• Size 56: 170 mm.

• Size 58: 172.5 mm.

• Size 61: 172.5 mm.

Included accessories

The Cervélo Áspero-5 Force AXS 1 comes with a full set of accessories designed for gravel use and for managing gear during rides:

• Cervélo Rear Accessory Mount, for attaching accessories to the back of the bike.

• Cervélo In-Frame Storage Rolls – Inner Tube Storage, a system dedicated to carrying an inner tube inside the frame.

• Cervélo In-Frame Storage Rolls – Flat Kit Storage, a solution for organizing and carrying your repair kit.

• Cervélo Smartpak Top Tube Storage Bag 400A, a storage bag to be mounted on the top tube.

• Arundel Mandible Water Bottle Cage, a water bottle cage in Matte UD Carbon finish, supplied as 2 pieces.

• Cervélo Front Computer/Accessory Mount 266, a front mount for computers and accessories.

Please Note

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

Cervélo Áspero-5 Force AXS 1: a race-ready gravel bike

The Cervélo Áspero-5 Force AXS 1 brings Cervélo's expertise in aerodynamics and competition to the gravel world. The frame, the aerodynamic cockpit, the integrated storage system, compatibility with tires up to 45 mm, and the SRAM AXS electronic drivetrain define a configuration geared toward speed and performance.

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.