2017 Specialized Sirrus Comp City vs 2018 Surly Ogre
The S is the Surly Ogre size closest to your M Specialized Sirrus Comp City. 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 City in M, the Surly Ogre in S places the top of the head tube at about the same height and 10 mm further back, relative to the bottom bracket. Its wheelbase is 19 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +1 mm
- About the same height
- Frame reach
- −11 mm
- Shorter frame reach
- Wheelbase
- −19 mm
- Shorter: quicker to change direction
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- +1 mm
- About the same
The two frames
Specialized Sirrus Comp City, MSurly Ogre, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Sirrus Comp City M | Surly Ogre S | Difference |
|---|---|---|---|
| Reach | 406mm | 395.5 | −11 mm |
| Stack | 591mm | 592 | +1 mm |
| Head tube angle | 71.5° | 71.5° | ±0.0° |
| Seat tube angle | 73.5° | 73.0° | −0.5° |
| Effective top tube | 581mm | 575 | −6 mm |
| Chainstay length | 439mm | 440 | +1 mm |
| Wheelbase | 1068mm | 1049.4 | −19 mm |
| BB drop | 70mm | 68 | −2 mm |
| BB height | 275mm | not listed | |
| Standover | 779.8mm | 763.5 | −16 mm |
| Seat tube length | 485mm | 406.4 | −79 mm |
| Fork length | 398mm | 447 | +49 mm |
| Head tube length | 165mm | 110 | −55 mm |
Differences are the Surly Ogre minus the Specialized Sirrus Comp City. Full charts: 2017 Specialized Sirrus Comp City, 2018 Surly Ogre.
Where each sits in its class
Specialized Sirrus Comp CitySurly 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 CityComp City | Surly OgreOgre |
|---|---|---|
| Derailleur | 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 Acera | Avid BB7, Tektro FR5 |
| Stem | Specialized Flowset | Kalloy AS-008 |
| 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 |
| Seatpost | not listed | Kalloy SP-342 |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
