2019 Specialized Sirrus Women's Elite Alloy vs 2018 Surly Ogre
The S is the Surly Ogre size closest to your M Specialized Sirrus Women's Elite Alloy. 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 Women's Elite Alloy in M, the Surly Ogre in S places the top of the head tube 11 mm higher and 13 mm further forward, relative to the bottom bracket.
- Frame stack
- +11 mm
- Higher front end
- Frame reach
- +13 mm
- Longer frame reach
- Wheelbase
- +2 mm
- About the same
- Head angle
- +0.5°
- Steeper: sharper steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Sirrus Women's Elite Alloy, MSurly Ogre, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Sirrus Women's Elite Alloy M | Surly Ogre S | Difference |
|---|---|---|---|
| Reach | 383mm | 395.5 | +13 mm |
| Stack | 581mm | 592 | +11 mm |
| Head tube angle | 71° | 71.5° | +0.5° |
| Seat tube angle | 73.5° | 73.0° | −0.5° |
| Effective top tube | 555mm | 575 | +20 mm |
| Chainstay length | 440mm | 440 | ±0 mm |
| Wheelbase | 1047mm | 1049.4 | +2 mm |
| BB drop | 70mm | 68 | −2 mm |
| BB height | 275mm | not listed | |
| Standover | 745mm | 763.5 | +19 mm |
| Seat tube length | 425mm | 406.4 | −19 mm |
| Fork length | 390mm | 447 | +57 mm |
| Head tube length | 166mm | 110 | −56 mm |
Differences are the Surly Ogre minus the Specialized Sirrus Women's Elite Alloy. Full charts: 2019 Specialized Sirrus Women's Elite Alloy, 2018 Surly Ogre.
Where each sits in its class
Specialized Sirrus Women's Elite AlloySurly 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 Women's Elite AlloyWomen's Elite Alloy | Surly OgreOgre |
|---|---|---|
| Derailleur | microSHIFT Centos, Shimano Tiagra | Shimano Deore Front, Shimano Deore Rear |
| Cassette | Shimano Tiagra | Shimano HG50 |
| Chain | KMC X-10 | KMC X10 |
| Crankset | Praxis Alba M24 | Shimano T551 |
| Bottom bracket | Praxis M24 | SRAM PowerSpline |
| Tire | Specialized Espoir Sport Reflect | Surly Extraterrestrial |
| Brake | TRP Flow | Avid BB7, Tektro FR5 |
| Stem | Specialized Flowset | Kalloy AS-008 |
| Saddle | Specialized Aldia Comp | WTB Volt Sport |
| Frame | not listed | Surly Ogre |
| Shifter | not listed | Shimano Deore |
| 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 |
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