Is Specialized Sirrus X 5.0 A Perfect Selection? – [Specialized Sirrus X 5.0 Review]

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Specialized Sirrus X 5.0 Review

  • Price: $2,250
  • Frame: Carbon
  • Tires: 700c Aluminum
  • Gear: 1 x 12

What we like about it: The combination of performance and comfort in a lightweight, versatile frame. It also has a pleasing aesthetic.

What we didn’t like about it: As a fitness bike, it’s relatively expensive.

Rating: (4.9/5)

Specialized Sirrus X 5.0
Specialized Sirrus X 5.0

The Specialized Sirrus X 5.0 is a bike designed for road and gravel riding with a striking frame design. The unique frame design provides flexibility to the rear end, enhancing ride forgiveness and comfort.

In the following sections, we will analyze the riding experience, key features, components, specifications, and other versions of the Specialized Sirrus X 5.0. In the latter part of this article, we’ll also compare several top bike models. If you’re interested in more bike reviews, feel free to follow us.

Riding Experience

Specialized Sirrus X 5.0

The Specialized Sirrus X 5.0 features a carbon fiber frame, making the ride lighter and more agile. Combined with ergonomic riding geometry, it’s well-suited for long-distance cycling.

To put it to the test, I packed up the Specialized Sirrus X 5.0 and headed to the gravel bike trails of the Barry-Roubaix race. The terrain here is composed of unpaved gravel roads, along with varying degrees of uphill climbs and long descents. I booked a nearby hotel through IHG and set off with the bike.


The Specialized Sirrus X 5.0 excels in uphill climbs, thanks to its lightweight and rigid carbon fiber frame, which makes the climb feel effortless. Riding uphill becomes quicker and without any sluggishness.

The excellent geometry keeps my balance stable. The bike stays well connected to the ground during climbs, effectively turning my pedaling into upward momentum.

Furthermore, this bike is equipped with the SRAM NX Eagle 1×12-speed drivetrain, offering a wide range of speed options. On steeper uphill sections, I can use a larger freewheel, making pedaling easier and conserving energy.

Lastly, the Pathfinder Pro, 2Bliss Ready, 700x38mm tires provide ample grip. On the gravel terrain, I experienced no slipping, making uphill climbs even more efficient.

In summary, the climbing experience with the Specialized Sirrus X 5.0 is efficient and effortless, leaving a strong impression.


During downhill rides, the shock-absorbing headset design and flexible carbon fiber frame with controlled deformation, along with the wide 38C tires, absorb most of the road vibrations, enhancing comfort. The 700C large wheel diameter offers better balance and stability when descending.

Additionally, the Tektro HD-R510 hydraulic disc brakes with front and rear 160mm rotors respond sensitively. They bring the bike to a stop quickly, even in challenging conditions. After continuous braking over a long period, the hydraulic disc brakes maintained excellent braking performance even at high temperatures.

In conclusion, the Specialized Sirrus X 5.0 demonstrates reliable riding capabilities on gravel roads. It’s versatile, making it suitable for both daily city commutes and exploration of rural gravel paths, expanding its range of applications.


Specialized Sirrus X 5.0

The Specialized Sirrus X 5.0 features a lightweight carbon fiber frame with controlled deformation, allowing it to absorb some of the road vibrations, providing a more comfortable riding experience.

Furthermore, it comes in 6 frame sizes (XS-XXL) suitable for riders with heights ranging from 5’2″ to 6’5″ and above. In other words, it offers broad versatility, catering to riders of almost all heights.

Additionally, this bike is equipped with Future Shock technology. This unique suspension design is located below the stem and reduces even more riding vibrations. Above the stem, there’s a concealed spring that moves along a vertical path, adding further shock-absorption performance for enhanced comfort during rides.

Lastly, the frame of the Specialized Sirrus X 5.0 features multiple mounting points, supporting full-size water bottles and front/rear fender installation, allowing you to carry more equipment during long rides.


What do we like about it?

  • Lightweight carbon fiber frame with a unique frame design for a lighter and more comfortable ride.
  • Shock-absorbing design at the stem to reduce bumps during rides.
  • Hydraulic disc brakes that remain reliable and efficient even in adverse conditions.
  • SRAM NX Eagle drivetrain with efficient shifting and excellent gear feel.
  • Internal cable routing for a cleaner appearance and easier maintenance.
  • Ample mounting positions throughout the bike, supporting fender installation and accommodating long rides.

What don’t we like about it?

  • As a fitness bike, it’s relatively expensive.


  • Does this bike use tubeless tires?

The Specialized Sirrus X 5.0 model is compatible with tubeless tires.

  • Is this bike suitable for long-distance rides?

With its strong load-carrying capacity, comfortable riding experience, and multiple mounting points on the frame, it’s well-suited for long-distance cycling.

  • How do I choose the right size?

Here we have a sizing chart for you. Of course, it doesn’t always have to be followed, and the best way to find the perfect size is to try it out.

Rider heightSIZE
5’2″ – 5’6″XS
5’4″ – 5’9″S
5’6″ – 5’11”M
 5’6″ – 6’2″L
6’0″ – 6’4″XL
6’1″ – 6’5″XXL

Specialized Sirrus X 5.0 Specs


FrameSpecialized FACT 9r Carbon, Fitness Geometry, 1x Drivetrain, 12×142 thru-axle, internal cable routing, flat-mount disc, Plug + Play rack/fender mountsColors: Satin Red Tint / Carbon / Black / Black Reflective; Gloss White Mountains / Gunmetal / Satin White Mtns Reflective
ForkSpecialized FACT 9r Carbon Monocoque, flat-mount disc, 12x100mm thru-axle, low rider mounts, Plug + Play fender mounts, Future Shock 1.5
Bottom BracketSRAM Powerspline
StemFuture Stem, Comp
HandlebarDouble-butted alloy, 9-degree backsweep, 15mm rise, 31.8mm
SaddleBody Geometry Power Sport, steel rails
SeatpostAlloy, 2-bolt, 14mm offset, 27.2mm
PedalsVP Platform, Alloy Body


Rear DerailleurSRAM NX Eagle, 12-speed
CrankSRAM S650, 3-piece, Powerspline, 38T
ShiftersSRAM SL NX Eagle Trigger
CassetteSRAM PG-1210 Eagle, 11-50t
ChainSRAM NX Eagle, 12-speed
BrakesTektro HD-R510, hydraulic disc, 160mm


Rims700C disc, double-wall alloy, 30mm depth, 21mm internal width
SpokesStainless, 14g
Front HubAlloy, sealed cartridge bearings, Center Lock, 12x100mm thru-axle, 24h
Rear HubAlloy, sealed cartridge bearings, Center Lock, 12x142mm thru-axle, 28h
TiresFront: Pathfinder Pro, 2Bliss Ready, 700x38mm, Rear: Pathfinder Pro, 2Bliss Ready, 700x38mm

Comparison Table

BikesClick viewWheelsetFrame MaterialBrake TypeDrivetrain
CUBE SL ROAD SLClick View700c AluminumAluminumShimano BR-RS4052 × 11
Merida SPEEDER 900Click View700c AluminumAluminumShimano MT-5012 × 11
Specialized Sirrus 6.0Click View700c AluminumCarbonShimano MT2012 × 11

Specialized Sirrus X 5.0 vs CUBE SL ROAD SL


These are two bicycles with different focal points. Firstly, the former, with its carbon fiber frame and unique design, makes it lighter and offers better shock absorption compared to the latter’s aluminum frame, resulting in a more comfortable ride.

Regarding the drivetrain components, the CUBE SL ROAD SL utilizes a Shimano Ultegra 2×11 drivetrain, which is a road bike component set known for higher transmission efficiency and smoother operation. On the other hand, the Specialized Sirrus X 5.0 features an SRAM NX Eagle 1×12 drivetrain, a mountain bike component set that’s more rugged and durable.

Therefore, between these two bicycles, I prefer the Specialized Sirrus X 5.0. Its frame is superior, providing it with greater potential for exploration and performance.

Specialized Sirrus X 5.0 vs Merida SPEEDER 900

Merida SPEEDER 900
Merida SPEEDER 900

Comparing these two bikes, the former still boasts a more high-end carbon fiber frame. It’s notably lighter in weight, and the carbon fiber construction provides superior vibration filtering, ensuring the ride isn’t overly bumpy and enhancing overall comfort.

When it comes to the drivetrain components, the SRAM NX Eagle shifting on the former offers a crisper and more direct feel. Meanwhile, the latter’s Shimano Ultegra 2×11 drivetrain operation is smoother and offers more speed options, particularly for faster-paced flat terrain riding.

Both bikes feature reliable hydraulic disc brakes, delivering excellent braking performance even in the harshest conditions.

Ultimately, both these bicycles stand out as exceptional options. However, my preference leans toward the Specialized Sirrus X 5.0 for its lighter and more comfortable riding experience.

Learn More: Is Merida REACTO 6000 Worth Buying? – [Merida REACTO 6000 Review]

Specialized Sirrus X 5.0 vs Specialized Sirrus 6.0

Specialized Sirrus 6.0
Specialized Sirrus 6.0

Both of these bikes feature lightweight carbon fiber frames and have shock-absorbing designs at the stem. However, the frame structure of the former enhances its riding comfort. On the other hand, the latter’s versatile handlebars offer several gripping positions, helping to alleviate hand pressure during long rides.

Regarding the drivetrain components, the SRAM NX Eagle on the former is a mountain bike drivetrain set with crisp and robust shifting. The Shimano 105 drivetrain on the latter is a road bike component set, known for its higher transmission efficiency and smooth gear shifting.

In terms of braking components, the Tektro HD-R510 brakes on the former have stronger braking capabilities compared to the Shimano MT201 brakes on the latter.

In summary, both these bikes provide a lightweight and responsive pedaling experience. However, the former excels in more complex terrain rides, while the latter is better suited for fast riding on flat surfaces.


Above is my riding review of the Specialized Sirrus X 5.0. In our assessment, it offers a comfortable ride and is capable of handling various road conditions. That’s why we’ve given it a rating of 4.9.

Of course, if you’re interested in other fitness bikes, we’ll also be evaluating a wide range of bikes with various price points and intriguing features. Feel free to explore our other reviews.

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