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Specialized Sirrus X 1.0

The Specialized Sirrus X 1.0 is a versatile fitness bike designed to offer the perfect balance of comfort, efficiency, and agility. Ideal for both urban use and adventures on light gravel and dirt roads, this bike ensures a smooth, stable, and fun ride in any situation.

Thanks to its semi-upright riding position, high-volume tires, and intuitive 1x drivetrain, the Sirrus X 1.0 provides an extremely comfortable experience even on longer rides. The Fitness Geometry developed according to the Rider-First Engineered™ concept also ensures the same level of stiffness, responsiveness, and handling across every frame size, adapting perfectly to any cyclist.

Lightweight, precise, and responsive, the Sirrus X 1.0 stands out for its agile and intuitive ride, perfect for tackling city traffic, bike paths, gravel roads, and mixed terrain with confidence and control.

Key Features

• Lightweight A1 Premium Aluminum frame
• Fitness Geometry for maximum comfort and control
• Internal cable routing
• Simple and intuitive 1x drivetrain
• Disc brakes for powerful and modulated braking
• Specialized Pathfinder tires suitable for asphalt and gravel
• Fender and rack compatible
• Ideal for commuting, fitness, light touring, and mixed terrain

Technical Specifications

Frame

• Frame: Specialized A1 Premium Aluminum
• Geometry: Fitness Geometry
• Butted tubing
• Internal cable routing
• Flat-mount disc brake attachment
• Quick release
• Plug + Play mounts for rack and fenders

Fork

• Hi-Ten Steel
• Flat-mount disc brake attachment
• Plug + Play fender mounts
• Low rider rack mounts
• Quick release

Brakes

Front Brake

• Lee Chi Mechanical Disc

Rear Brake

• Lee Chi Mechanical Disc

Drivetrain

Shifters

• Shimano Altus SL-M315-7R
• 7-speed

Rear Derailleur

• Shimano Acera
• 8-speed

Cassette

• microSHIFT CS-H074
• 12-40T
• 7-speed

Chain

• KMC X8 with Missing Link™

Crankset

• Prowheel Alloy
• XXS - XS: 165 mm
• S - M: 170 mm
• L - XL: 175 mm

Chainring

• Narrow Wide Steel 42T

Bottom Bracket

• Square-tapered
• 68 mm

Wheels and Tires

Rims

• 700C Disc Brake
• Double-wall alloy
• 22 mm height
• 21 mm internal width

Front Hub

• Alloy
• 6-bolt disc mount
• Loose ball bearings
• Quick release
• 32 holes

Rear Hub

• Alloy
• 6-bolt disc mount
• 8/9-speed freehub
• Loose ball bearings
• Quick release
• 36 holes
• 10x135 mm

Spokes

• Stainless Steel 14g

Front Tire

• Specialized Pathfinder Wirebead Fast Gravel 700x40C

Rear Tire

• Specialized Pathfinder Wirebead Fast Gravel 700x40C

Inner Tubes

• Standard 40 mm SV 700x32-50

Cockpit

Stem

• Alloy 3D-forged
• 31.8 mm diameter
• 7° rise

Handlebars

• Specialized Alloy
• 15° back sweep
• 46 mm rise
• 31.8 mm diameter

Grips

• Specialized Neutralizer
• Body Geometry
• Locking Grip

Saddle

• Bridge Sport
• Steel rails
• 155/143 mm

Seatpost

• Alloy
• 12 mm offset
• 2-bolt clamp
• 27.2 mm diameter

Seat Collar

• Bolt-type
• 31.8 mm

Accessories

• Specialized Platform Pedals

Weight

• Weight: 11.71 kg (25 lb, 13.1 oz)
• Verified weight size: LG

Product Details

• Product ID: 222048

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.

The Specialized Sirrus X 1.0 is the perfect bike for those who want a versatile, fast, and comfortable ride, capable of easily handling both urban environments and light gravel paths, always offering an agile, safe, and extremely enjoyable experience.

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.