2020 Specialized Sirrus Step-Through Women's Spec vs 2018 Surly Ogre
The S is the Surly Ogre size closest to your L Specialized Sirrus Step-Through Women's Spec. 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 Step-Through Women's Spec in L, the Surly Ogre in S places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket. Its wheelbase is 11 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +2 mm
- About the same height
- Frame reach
- +3 mm
- About the same reach
- Wheelbase
- −11 mm
- Shorter: quicker to change direction
- Head angle
- +0.5°
- Steeper: sharper steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Sirrus Step-Through Women's Spec, LSurly Ogre, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Sirrus Step-Through Women's Spec L | Surly Ogre S | Difference |
|---|---|---|---|
| Reach | 393mm | 395.5 | +3 mm |
| Stack | 590mm | 592 | +2 mm |
| Head tube angle | 71° | 71.5° | +0.5° |
| Seat tube angle | 73.5° | 73.0° | −0.5° |
| Chainstay length | 440mm | 440 | ±0 mm |
| Wheelbase | 1060mm | 1049.4 | −11 mm |
| BB drop | 70mm | 68 | −2 mm |
| BB height | 275mm | not listed | |
| Standover | 625mm | 763.5 | +139 mm |
| Seat tube length | 500mm | 406.4 | −94 mm |
| Fork length | 390mm | 447 | +57 mm |
| Head tube length | 176mm | 110 | −66 mm |
| Effective top tube | not listed | 575 |
Differences are the Surly Ogre minus the Specialized Sirrus Step-Through Women's Spec. Full charts: 2020 Specialized Sirrus Step-Through Women's Spec, 2018 Surly Ogre.
Where each sits in its class
Specialized Sirrus Step-Through Women's SpecSurly 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 Step-Through Women's SpecStep-Through Women's Spec | Surly OgreOgre |
|---|---|---|
| Shifter | Shimano Acera | Shimano Deore |
| Derailleur | Shimano Tourney, Shimano Altus | Shimano Deore Front, Shimano Deore Rear |
| Cassette | Shimano Altus | Shimano HG50 |
| Chain | KMC X8 | KMC X10 |
| Tire | Specialized Nimbus II Sport Reflect | Surly Extraterrestrial |
| Brake | Promax F1 | Avid BB7, Tektro FR5 |
| Saddle | Specialized Aldia Sport | WTB Volt Sport |
| Frame | not listed | Surly Ogre |
| Crankset | not listed | Shimano T551 |
| Chainring | not listed | Shimano T551 |
| Bottom bracket | not listed | SRAM PowerSpline |
| Rim | not listed | WTB i29 |
| Handlebar | not listed | Surly Moloko |
| Stem | not listed | Kalloy AS-008 |
| Grips | not listed | Velo Black |
| Headset | not listed | Cane Creek 40 |
| Seatpost | not listed | Kalloy SP-342 |
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