2019 Specialized Sirrus Women's SL Step-Through vs 2018 Surly Ogre
The S is the Surly Ogre size closest to your S Specialized Sirrus Women's SL Step-Through. 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 SL Step-Through in S, the Surly Ogre in S places the top of the head tube 56 mm higher and 23 mm further forward, relative to the bottom bracket. Its wheelbase is 18 mm longer, which can contribute to stability at speed.
- Frame stack
- +56 mm
- Higher front end
- Frame reach
- +23 mm
- Longer frame reach
- Wheelbase
- +18 mm
- Longer: steadier at speed
- Head angle
- +1.5°
- Steeper: sharper steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Sirrus Women's SL Step-Through, SSurly Ogre, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Sirrus Women's SL Step-Through S | Surly Ogre S | Difference |
|---|---|---|---|
| Reach | 373mm | 395.5 | +23 mm |
| Stack | 536mm | 592 | +56 mm |
| Head tube angle | 70° | 71.5° | +1.5° |
| Seat tube angle | 73.5° | 73.0° | −0.5° |
| Effective top tube | 532mm | 575 | +43 mm |
| Chainstay length | 440mm | 440 | ±0 mm |
| Wheelbase | 1031mm | 1049.4 | +18 mm |
| BB drop | 70mm | 68 | −2 mm |
| BB height | 275mm | not listed | |
| Standover | 615mm | 763.5 | +149 mm |
| Seat tube length | 400mm | 406.4 | +6 mm |
| Fork length | 390mm | 447 | +57 mm |
| Head tube length | 124mm | 110 | −14 mm |
Differences are the Surly Ogre minus the Specialized Sirrus Women's SL Step-Through. Full charts: 2019 Specialized Sirrus Women's SL Step-Through, 2018 Surly Ogre.
Where each sits in its class
Specialized Sirrus Women's SL Step-ThroughSurly 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 SL Step-ThroughWomen's SL Step-Through | Surly OgreOgre |
|---|---|---|
| Shifter | Shimano Altus | Shimano Deore |
| Derailleur | Shimano Altus, Shimano Acera | Shimano Deore Front, Shimano Deore Rear |
| Cassette | Shimano CS-HG200 | Shimano HG50 |
| Chain | KMC X9 | KMC X10 |
| Tire | Specialized Nimbus II Sport Reflect | Surly Extraterrestrial |
| Brake | Promax F1 | Avid BB7, Tektro FR5 |
| Grips | Specialized Contour | Velo Black |
| Saddle | Specialized Canopy 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 |
| Headset | not listed | Cane Creek 40 |
| Seatpost | not listed | Kalloy SP-342 |
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