2016 Surly Ogre vs 2015 Specialized Sirrus Elite Disc
The M is the Specialized Sirrus Elite Disc size closest to your S Surly Ogre. 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 Specialized Sirrus Elite Disc
Compared with the Surly Ogre in S, the Specialized Sirrus Elite Disc in M places the top of the head tube 3 mm lower and 11 mm further forward, relative to the bottom bracket. Its wheelbase is 17 mm longer, which can contribute to stability at speed.
- Frame stack
- −3 mm
- Lower front end
- Frame reach
- +11 mm
- Longer frame reach
- Wheelbase
- +17 mm
- Longer: steadier at speed
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- −1 mm
- About the same
The two frames
Surly Ogre, SSpecialized Sirrus Elite Disc, MDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Surly Ogre S | Specialized Sirrus Elite Disc M | Difference |
|---|---|---|---|
| Reach | 395.5 | 406mm | +11 mm |
| Stack | 592 | 589mm | −3 mm |
| Head tube angle | 71.5° | 71.5° | ±0.0° |
| Seat tube angle | 73.0° | 73.5° | +0.5° |
| Chainstay length | 440 | 439mm | −1 mm |
| Wheelbase | 1049.4 | 1066mm | +17 mm |
| BB drop | 68 | 70mm | +2 mm |
| Standover | 763.5 | 780mm | +17 mm |
| Seat tube length | 406.4 | 485mm | +79 mm |
| Fork length | 447 | not listed | |
| Head tube length | 110 | 165mm | +55 mm |
| Effective top tube | not listed | 580mm | |
| BB height | not listed | 272.5mm |
Differences are the Specialized Sirrus Elite Disc minus the Surly Ogre. Full charts: 2016 Surly Ogre, 2015 Specialized Sirrus Elite Disc.
Where each sits in its class
Surly OgreSpecialized Sirrus Elite Disc
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 | Surly Ogre | Specialized Sirrus Elite DiscElite Disc |
|---|---|---|
| Shifter | not listed | Shimano Sora |
| Derailleur | not listed | Shimano Sora R3500, Shimano Sora |
| Chain | not listed | KMC X9 |
| Crankset | not listed | FSA Tempo |
| Pedals | not listed | Specialized Sirrus |
| Wheelset | not listed | Specialized AXIS Classic |
| Tire | not listed | Specialized Espoir Sport Reflect |
| Brake | not listed | Tektro Gemini |
| Saddle | not listed | Specialized Targa Sport |
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