2017 Specialized Sirrus Comp Carbon vs 2018 Surly Ogre
The M is the Surly Ogre size closest to your L Specialized Sirrus Comp Carbon. We match frame stack and reach. This is a geometry comparison, not a fit recommendation; stem, spacers, handlebars and saddle setup also affect your riding position.
What changes on the Surly Ogre
Compared with the Specialized Sirrus Comp Carbon in L, the Surly Ogre in M places the top of the head tube 13 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 5 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- −13 mm
- Lower front end
- Frame reach
- +1 mm
- About the same reach
- Wheelbase
- −6 mm
- Shorter: quicker to change direction
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Specialized Sirrus Comp Carbon, LSurly Ogre, MDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Sirrus Comp Carbon L | Surly Ogre M | Difference |
|---|---|---|---|
| Reach | 410mm | 410.5 | +1 mm |
| Stack | 616mm | 603.4 | −13 mm |
| Head tube angle | 72° | 72.0° | ±0.0° |
| Seat tube angle | 73° | 73.0° | ±0.0° |
| Effective top tube | 598mm | 595 | −3 mm |
| Chainstay length | 435mm | 440 | +5 mm |
| Wheelbase | 1070mm | 1064.5 | −6 mm |
| BB drop | 70mm | 68 | −2 mm |
| BB height | 275mm | not listed | |
| Standover | 821.9mm | 795.7 | −26 mm |
| Seat tube length | 530mm | 457.2 | −73 mm |
| Fork length | 398mm | 447 | +49 mm |
| Head tube length | 190mm | 120 | −70 mm |
Differences are the Surly Ogre minus the Specialized Sirrus Comp Carbon. Full charts: 2017 Specialized Sirrus Comp Carbon, 2018 Surly Ogre.
Where each sits in its class
Specialized Sirrus Comp CarbonSurly Ogre
Each bike is ranked against the other commuter bikes on Quiver, on frame geometry alone. Not your hand position or ride feel.
What each ships with
The stock build of each bike's first listed trim. Parts that match are dimmed.
| Part | Specialized Sirrus Comp CarbonComp Carbon | Surly OgreOgre |
|---|---|---|
| Derailleur | Shimano Tiagra 4700, Shimano Tiagra | Shimano Deore Front, Shimano Deore Rear |
| Chain | KMC X-10 | KMC X10 |
| Crankset | FSA Gossamer Pro | Shimano T551 |
| Bottom bracket | FSA MegaExo | SRAM PowerSpline |
| Wheelset | Specialized AXIS Elite | not listed |
| Tire | Specialized Espoir Sport Reflect | Surly Extraterrestrial |
| Brake | Shimano Alivio | Avid BB7, Tektro FR5 |
| Stem | Specialized Flowset | Kalloy AS-008 |
| Seatpost | Specialized Pro Pave | Kalloy SP-342 |
| Saddle | Specialized Canopy Comp | WTB Volt Sport |
| Frame | not listed | Surly Ogre |
| Shifter | not listed | Shimano Deore |
| Cassette | not listed | Shimano HG50 |
| Chainring | not listed | Shimano T551 |
| Rim | not listed | WTB i29 |
| Handlebar | not listed | Surly Moloko |
| Grips | not listed | Velo Black |
| Headset | not listed | Cane Creek 40 |
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