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Specialized Sirrus Range Review

Specialized Sirrus Review

  • Price Range: From £335.00 - From £1,355.00
  • Discipline: Fitness & Commuting
  • Usage: Road & Trail
  • Lightweight premium alloy or Carbon frame
  • Zertz vibration inserts (Elite & above)
  • Comfortable & efficient ‘Fitness’ geometry
  • No rack mounts on carbon models
  • V-brakes on basic model
  • Lack of reflective paint/detailing

Updated: 27th March 2017


Blending speed with comfort, the Specialized Sirrus hybrid bike range is perfect for cyclists who want to make cycling a part of their fitness routine, cycle to work in speed and comfort, or simply enjoy an afternoon out on the beach front soaking up the sun. The Sirrus is a true hybrid bike, taking inspiration from road bikes with fast wheels & high-speed gears, and blending them with a flat handlebar and an upright & comfortable riding position. These characteristics making the Sirrus a fast, efficient and wonderfully versatile hybrid bike.

The Specialized Sirrus hybrid bike range begins with the affordable entry-level model with an alloy frame and rim brakes, includes a ‘city’ model which comes complete with front & rear mudguards, and ends at the full carbon Expert model complete with 22 speed racing gears.

Specialized Sirrus

Frame and Fork

Premium alloy, high-strength carbon, Zertz inserts

The frame of the Sirrus, Sirrus Disc and Sirrus Sport are made from Specialized’s A1 grade alloy. The Sirrus Elite and Comp models both have E5 premium alloy frames, while at the top of the range the Sport Carbon, Comp Carbon, and Expert Carbon each get a FACT 9r carbon fibre frame with Zertz vibration absorbing inserts.

Zertz inserts are like having a very small amount of suspension travel. The Zertz material absorbs road vibrations before they reach the saddle & handlebar, giving you a  comfortable ride without the bum-numbing ‘buzz’ typical of other non-suspension bikes.

The fitness geometry and flat handlebar of the Sirrus makes for an incredibly sporty and agile ride. It has the comfort and control of an MTB, with the speed & efficiency of a road bike. Every Sirrus is compatible with Specialized’s Plug and Play mudguards, and the alloy-frame models can also be fitted with a pannier rack.

The comfort and control of a mountain bike, with the speed & efficiency of a road bike.

Specialized Sirrus


Racy road-bike gearing with all-weather disc brakes

The Sirrus is built for speed, so it needs fast road-bike gearing that can keep up.

Taking further inspiration from the road bike genre, the Specialized Sirrus range features gearing from Shimano’s road groupsets on higher spec models. The Sirrus and Sirrus Disc use simple-yet-reliable 8 Shimano 3x8 speed gearing, while the Sirrus Sport & Sport Carbon have reliable 3x9 gears. The Sirrus Elite has a road bike 2x9 Shimano Sora gear set, while the Sirrus Comp and Comp Carbon both get Shimano's 2x10 speed Tiagra groupset. The top of the range Sirrus Expert Carbon makes the jump up to the race-proven 2x11 speed Shimano 105 groupset, bestowing the bike with true race-speed capability.

With the exception of the entry level Specialized Sirrus which uses V-brakes, every model of the Specialized Sirrus uses hydraulic disc brakes, with more stopping power, better lever feedback and dramatically improved wet-weather braking performance. The top-spec Sirrus Expert Carbon even gets the high-performance Shimano Deore disc brakes, which are renowned for their excellent braking power and responsive lever feel.

Specialized Sirrus


700c road-inspired, with deep-aero rims on top models

With 700c wheels and 30-32mm tyres, the Specialized Sirrus makes clear its intentions as a speedy ride. The less-expensive models (without Zertz inserts) make up for some of the lost comfort by using high-volume 32mm Nimbus tyres with deeper treads. All other models use 30mm Espoir tyres with shallow treads, which have less aerodynamic and rolling resistance. All the tyre options on the Specialized Sirrus have reflective sidewall stripes, giving you added visibility when the sun goes down.

Every Specialized Sirrus with disc brakes comes with disc-specific rims which are lighter and stronger. Even the entry-level Sirrus comes with double-wall rims for extra strength. High-spec models come with deep-profile Axis wheel rims, helping the bike cut cleanly through the air once you get up to speed.

The 30 & 32mm tyres make clear the Sirrus’ intentions as a speedy ride.

Specialized Sirrus

Best for

Fitness training and speedy commuting

Faster than a mountain bike, smoother and more comfortable than a road bike. The Specialized Sirrus is the perfect commuter bike for riders who don’t intend to sweat out a new land speed record on their way to work, yet still want to beat the traffic on a swift and comfortable bike. It’s also perfect for fitness cyclists who prioritize comfort and control over outright speed – a fast bike which doesn’t force you into a back-breaking aero tuck.

Specialized Sirrus Fork Specialized Sirrus Seatstay
Specialized Sirrus Decal Specialized Sirrus Cockpit
Specialized Sirrus Zertz Inserts Specialized Sirrus Body Geometry Grip

Specialized Sirrus range models