Specialized Sirrus 1.0 Review
- Price: $650
- Frame: Aluminum
- Tires: RoadSport 700x32c
- Gear: 2 x 7
What we like about it: Reflective patterns on the frame and tires improve visibility for other vehicles.
What we don’t like about it: Rim brakes tend to accumulate excessive heat during braking, affecting the wheels.
Rating: (4.6/5)
The Specialized Sirrus 1.0 offers exceptional value for money, and in the recent discount promotion, this bike is available for just $549.99. Despite its budget-friendly price, it boasts impressive features. It’s sure to be your most faithful companion, providing powerful performance.
In the following sections, we will analyze the riding experience, key features, components, specifications, and other versions of the Specialized Sirrus 1.0. In the latter part of this article, we have also selected a few bikes for comparison. If you’re interested in more bicycle reviews, feel free to follow us.
Riding Experience
Commute & Fitness
In the early morning, I stand next to the fitness bike, preparing for a day of commuting. The sun has just risen, and the city is still asleep, but I mount the Specialized Sirrus 1.0 to welcome a new day.
As I push the pedals, the Specialized Sirrus 1.0 starts smoothly and comfortably. The efficient drivetrain, consisting of Shimano Altus and Shimano Tourney FD-TY710-2 components, allows for effortless acceleration. I grip the handlebars tightly, feeling the bike’s agility and freedom at my fingertips.
On my commute, I navigate through the tranquil city streets. The lightweight design of the Specialized Sirrus 1.0 allows me to maneuver through twists and turns and handle traffic signals with ease. I sense that every turn of the handlebars confirms the bike’s control. As the city gradually awakens, traffic increases, but I can still effortlessly weave through, savoring the thrill of overtaking and accelerating. Moving steadily forward, I arrive at the office.
Is that all?
As night falls, I prepare for the journey back home. The city comes alive with its dazzling lights as I ride the Specialized Sirrus 1.0. During the ride, I adjust my posture, gripping the handlebars securely. I know the bike is my trusted companion, guiding me through the city’s nighttime.
On the road, the city’s lights reflect on my silhouette. The Specialized A1 Premium Aluminum frame and stability allow me to confidently navigate through traffic. I feel that every lane change and judgment is a testament to the bike’s maneuverability.
Gradually, I reach a slightly bumpy section of the road. I adjust my posture, maintain stability, and savor the excitement and fun brought by the challenges. In the darkness of the night, I arrive home and begin an enjoyable evening.
Specifications
The Specialized Sirrus 1.0 is an excellent fitness bicycle. It features a Specialized A1 Premium Aluminum frame and a Hi-Ten steel fork, providing strong shock absorption while maintaining a lightweight and sturdy frame. It has a clean internal cable routing design, making maintenance a breeze. However, its 2×7 drivetrain, composed of a Shimano Altus rear derailleur and Shimano Tourney FD-TY710-2 front derailleur, is relatively average. Its performance isn’t outstanding, and the gear range and shifting may not be as smooth.
This bicycle is equipped with V-brakes for the braking system. Rim brakes offer average performance and are prone to malfunctions. Nevertheless, the RoadSport tires perform quite well, featuring Specialized’s classic multi-surface tread pattern and a three-layer Endurant casing. These tires are lightweight and enhance speed, grip, and durability.
Other Versions
After numerous tests, we have gained a deeper understanding of this bike. It’s an outstanding fitness bicycle. However, many riders have their own performance and component requirements. Therefore, we have conducted further research into similar types of bicycles.
2023 Specialized Sirrus X 4.0
The Specialized Sirrus X 4.0 is equipped with a Specialized Future Shock 1.5 fork with 20mm front travel, providing excellent shock absorption. It also boasts a high-performance hydraulic disc brake system for efficient and timely stopping, ensuring rider safety. Its 1×11 drivetrain offers a wide gear range and silky-smooth shifting. The single derailleur design effectively prevents chain drops. However, the Sirrus X 1.0 is slightly faster than the Sirrus X 4.0, with a speed limit of 31mph for the latter.
Additionally, the Specialized Sirrus X 4.0 offers a more comfortable riding experience than the Sirrus X 1.0, with a larger 1.61 stack/reach ratio. However, they share the same head tube angle and BB drop. Nonetheless, the Sirrus X 4.0 has a larger trail, providing enhanced speed stability, while the Sirrus X 1.0, with its lower trail, offers faster and more agile steering capabilities.
What do we like about it?
- Reflective patterns on the frame and tires improve visibility for other vehicles.
- A1 alloy frame with internal cable routing, lightweight and sleek design.
- Comes in three different colors for rider choice.
- Body Geometry contact points are designed for excellent comfort.
What don’t we like about it?
- Rim brakes tend to accumulate excessive heat during braking, affecting the wheels.
FAQ
- Is this bike suitable for beginners?
This bike is suitable for both beginners and experienced riders.
- Can this bike be used as a gravel bike?
It is well-suited for paved and gravel paths; its drivetrain and tires adapt well to these road types.
- What is the weight of this bike?
It weighs 12.39kg.
- How do I choose the right size?
The size chart is below:
These sizes are general guidelines, and the best way to find your size is to test-ride the bike.
| Rider height | SIZE |
| 4’8″ – 4’11” | XXS |
| 4’11” – 5’2″ | XS |
| 5’1″ – 5’5″ | S |
| 5’5″ – 5’9″ | M |
| 5’9″ – 6’0″ | L |
| 6’0″ – 6’4″ | XL |
| 6’4″ – 6’6″ | XXL |
Specs
Build
| Frame | Specialized A1 Premium Aluminum, Fitness Geometry, Butted tubing, Internal Cable Routing, V-Brake, Plug + Play rack/fender mountsColors: Gloss Cool Grey / Smoke / Satin Black Reflective; Satin Deep Marine / Satin Dark Navy Reflective; Gloss Fiery Red / Satin Black Reflective |
| Fork | Hi-Ten steel, V-Brake, Plug + Play fender mounts, low rider rack mounts |
| Bottom Bracket | 68mm, square taper, 124.5mm length |
| Stem | 3D-forged alloy, 25.4 mm, 12-degree rise |
| Handlebar | Double-butted alloy, 5-degree backsweep, 25.4mm |
| Saddle | Bridge Sport, Steel rails, 155/143mm |
| Seatpost | Alloy, 12mm offset, 2-bolt clamp, 27.2mm |
| Pedals | Specialized Body Geometry Fitness, platform, plastic |
Groupset
| Rear Derailleur | Shimano Altus, 7-/8-speed |
| Front Derailleur | Shimano Tourney FD-TY710-2 , Top swing, Dual pull |
| Crank | ProWheel Forged aluminum arms, 46/30, chainguard |
| Shifters | Shimano EF500, 7-speed |
| Cassette | Shimano HG200, 7-speed, 12-32t |
| Chain | KMC X8 w/ Missing Link™, 8-speed |
| Brakes | V-brake, linear pull |
Wheels
| Rims | 700C rim brake, double-wall alloy, 22mm depth, 21mm internal width, rim brake |
| Spokes | Stainless, 14g |
| Front Hub | Alloy, loose ball bearing, quick-release, 32h |
| Rear Hub | Alloy, loose ball bearings, quick-release, 7-speed freehub, 32h |
| Tires | Front: RoadSport, Wire bead, Blackbelt/Endurant Casing, 700x32c, Rear: RoadSport, Wire bead, Blackbelt/Endurant Casing, 700x32c |
Comparison Table
| Bikes | Click view | Tires | Drivetrain | Frame Material | Groupset |
| Marin Kentfield 1 | Click View | Vee Tire Co. GPVee, 700×40 | 1 x 7 | Aluminum | Shimano Tourney, Altus |
| Jamis ALLEGRO A3 Step-Over Frame | Click View | Kenda Eurotrek K-197, 700 x 35c | 3 x 7 | Aluminum | Shimano Tourney |
| CUBE SL ROAD RACE | Click View | Schwalbe G-One Allround, Kevlar, 40-622 | 2 x 11 | Aluminum | Shimano 105, GRX 800 |
| Merida SPEEDER 400 | Click View | Maxxis Detonator, 700x32C | 2 x 11 | Aluminum | Shimano 105 |
Specialized Sirrus 1.0 vs. Marin Kentfield 1
These two bicycles both feature aluminum frames, steel forks, and aluminum wheels. However, the Specialized Sirrus 1.0 uses rim brakes for its braking system, while the Marin Kentfield 1 employs mechanical disc brakes. Rim brakes, while lightweight, offer only average braking performance. Additionally, they tend to accumulate excessive heat during extended downhill rides, which can negatively impact the bike’s braking and wheels. On the other hand, the Marin Kentfield 1’s mechanical disc brakes provide relatively good braking performance, are easy to maintain, and are convenient for repairs when damaged.
Furthermore, the Specialized Sirrus 1.0 is equipped with a 2×7 drivetrain, whereas the Marin Kentfield 1 utilizes a 1×7 drivetrain. The 1×7 drivetrain effectively prevents chain drops. However, the Marin Kentfield 1 has a maximum speed of only 30mph, while the Specialized Sirrus 1.0 offers a faster speed, reaching up to 33mph.
Learn More: Is Marin Kentfield 1 A Good Bike?[Marin Kentfield 1 Review]
Specialized Sirrus 1.0 vs. Jamis ALLEGRO A3 Step-Over Frame
From a geometric perspective, the Jamis ALLEGRO A3 Step-Over Frame has a stack/reach ratio of 1.34, which is relatively aggressive. It sacrifices some comfort for efficiency, allowing riders to exert more force efficiently when pedaling. On the other hand, the Specialized Sirrus 1.0 has a stack/reach ratio of 1.43, offering a milder geometry. This allows riders to maintain a more upright position during cycling. Riding in an upright posture can open up the chest, making long-distance rides more comfortable.
The Jamis ALLEGRO A3 Step-Over Frame has a 71° head tube angle, which is slightly steeper than the 70° head tube angle of the Specialized Sirrus 1.0. A larger head tube angle makes the bike’s steering more agile, while a slightly smaller head tube angle tends to provide more stability. However, the former has a larger BB drop, which lowers the bike’s center of gravity, resulting in a more stable ride. But this can also lead to a lower pedal position, which might cause issues when turning or navigating obstacles.
Learn More: Is Jamis ALLEGRO A2 Worth Buying?-[Jamis ALLEGRO A2 Review]
Specialized Sirrus 1.0 vs. CUBE SL ROAD RACE
The CUBE SL ROAD RACE features a carbon fork, while the Specialized Sirrus 1.0 is equipped with a steel fork. A steel fork offers strong shock absorption but comes with added weight. In contrast, a carbon fork has less elastic deformation, a higher natural frequency, good shock damping, and is lightweight. However, it is more prone to breaking upon impact with sharp objects. Additionally, the CUBE SL ROAD RACE is capable of achieving a higher riding speed than the Specialized Sirrus 1.0, reaching speeds of up to 36mph.
It’s worth noting that the CUBE SL ROAD RACE uses a highly effective hydraulic disc brake system. Although it is heavier compared to rim brakes, hydraulic disc brakes are currently more popular due to their superior performance. Moreover, its 2×11 drivetrain provides a smoother gear-shifting experience, a wider range of gears, and overall better performance.
Specialized Sirrus 1.0 vs. Merida SPEEDER 400
The Merida SPEEDER 400 boasts an excellent 2×11 drivetrain. Compared to the Specialized Sirrus 1.0, which is equipped with a 2×7 drivetrain, the 2×11 drivetrain offers a broader range of gears and smoother gear shifting. Additionally, the Merida SPEEDER 400 achieves higher speeds, reaching up to 39mph, whereas the Specialized Sirrus 1.0 has a slower speed, maxing out at 33mph.
In terms of geometry, the Merida SPEEDER 400 has a larger stack/reach ratio of 1.46, providing a more relaxed and comfortable riding experience. On the other hand, the Specialized Sirrus 1.0 features a more aggressive geometry, offering higher riding efficiency. The Specialized Sirrus 1.0 has a smaller head tube angle, longer BB drop, and provides a very stable ride. Its lower trail also contributes to a smoother ride. In contrast, the Merida SPEEDER 400’s larger head tube angle, smaller BB drop, and greater trail make for a highly agile ride.
Summary
This is our review of the Specialized Sirrus 1.0. It is an excellent fitness bicycle that provides riders with enhanced workout opportunities during their commutes. Based on our assessment, we have awarded it a high rating of 4.6. If you are interested in more information about bicycles, please feel free to check out our other reviews.
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