2015 Specialized Sirrus Comp Disc vs 2016 Surly Ogre
The S is the Surly Ogre size closest to your M Specialized Sirrus Comp Disc. 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 Disc in M, the Surly Ogre in S places the top of the head tube 3 mm higher and 10 mm further back, relative to the bottom bracket. Its wheelbase is 17 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +3 mm
- Higher front end
- Frame reach
- −11 mm
- Shorter frame reach
- Wheelbase
- −17 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 Disc, MSurly Ogre, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Sirrus Comp Disc M | Surly Ogre S | Difference |
|---|---|---|---|
| Reach | 406mm | 395.5 | −11 mm |
| Stack | 589mm | 592 | +3 mm |
| Head tube angle | 71.5° | 71.5° | ±0.0° |
| Seat tube angle | 73.5° | 73.0° | −0.5° |
| Effective top tube | 580mm | not listed | |
| Chainstay length | 439mm | 440 | +1 mm |
| Wheelbase | 1066mm | 1049.4 | −17 mm |
| BB drop | 70mm | 68 | −2 mm |
| BB height | 272.5mm | not listed | |
| Standover | 780mm | 763.5 | −17 mm |
| Seat tube length | 485mm | 406.4 | −79 mm |
| Head tube length | 165mm | 110 | −55 mm |
| Fork length | not listed | 447 |
Differences are the Surly Ogre minus the Specialized Sirrus Comp Disc. Full charts: 2015 Specialized Sirrus Comp Disc, 2016 Surly Ogre.
Where each sits in its class
Specialized Sirrus Comp DiscSurly 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 DiscComp Disc | Surly Ogre |
|---|---|---|
| Shifter | Shimano Tiagra | not listed |
| Derailleur | Shimano Tiagra | not listed |
| Cassette | Shimano Tiagra | not listed |
| Chain | KMC X-10 | not listed |
| Crankset | FSA Omega | not listed |
| Pedals | Specialized Sirrus | not listed |
| Wheelset | Specialized AXIS 1.0 | not listed |
| Tire | Specialized Espoir Sport Reflect | not listed |
| Brake | Tektro Gemini | not listed |
| Saddle | Specialized Targa Sport | not listed |
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