Sirrus
Origin
The Sirrus has had two lives. In 1989 it launched as Specialized's sister to the steel Allez road bike — same tubing, same geometry, slightly cheaper components — and through the early '90s it was a respected lugged-steel road platform that just happened to be overshadowed by its more famous sibling. Then in the 2000s Specialized repositioned the name entirely: the Sirrus became the brand's flat-bar fitness hybrid, aimed at riders who wanted road-bike speed without the drop bars. The current generation splits into two trees — the standard Sirrus (1.0 through 4.0) for paved commuting and fitness, and the Sirrus X (1.0 through 5.0) with wider tires, eyelets, and gravel-ready geometry for riders who want one bike for both city streets and unpaved canal paths. It's now one of the best-selling hybrid platforms in Europe, and the carbon Sirrus 4.0 / X 5.0 are unusually high-end builds for a category most brands treat as entry-level.
Specifications
- Frame
- Specialized A1 Premium Aluminium (butted, internal routing, flat-mount disc, rack/fender mounts); carbon frame on Sirrus 6.0
- Weight
- kg
- Drivetrain
- Shimano Sora 2×9 (Sirrus 3.0); 1× wide-range on Sirrus X; varies by trim
- Brakes
- Hydraulic disc across lineup; Tektro HD-R280 160/140 mm (Sirrus 3.0)
- Wheels
- 700c; double-wall alloy; QR on lower trims
The verdict
- Hydraulic disc brakes across the lineup (even lower trims)
- Carbon fork on Sirrus 3.0 and above — noticeably reduces weight
- Body Geometry saddle and grips add comfort on longer rides
- Reflective tires (RoadSport Reflect) practical for commuting
- Internal cable routing gives clean appearance
- Sirrus 6.0 full carbon frame is a standout value at hybrid price point
- Compliance Junction on Sirrus 6.0 improves road vibration damping
- Future Shock (Sirrus 6.0) adds suspension-like feel without fork
- Standard Sirrus discontinued after 2023 — availability limited going forward
- Sirrus 6.0 Future Shock not adjustable and has no lockout
- Higher price point vs competitors for a hybrid (especially 6.0 at €2600)
- Quick-release axles on lower trims (not thru-axle)
- Narrow tire clearance (32c stock) limits off-road versatility
- Flat bar makes urban traffic filtering less comfortable vs drop bar
Who it’s for
Versions & builds
Every official build side by side — differences highlighted.
| Spec | Sirrus X 1.0 (~$649 — A1 alloy, 1x8, hydraulic disc, Pathfinder 42c) | Sirrus X 2.0 KM (~$700-900) | Sirrus X 3.0 (~$1,000-1,100 — carbon fork upgrade) | Sirrus X 4.0 (Future Shock в headset) | Sirrus X 6.0 (top spec) |
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