2015 Specialized Roubaix SL4 Expert vs 2015 Specialized Secteur Double
The Specialized Secteur Double size closest to your 54 is the 54. Compare the 54 instead
What changes on the Specialized Secteur Double
Compared with the Specialized Roubaix SL4 Expert in 54, the Specialized Secteur Double in 52 places the top of the head tube 16 mm lower 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
- −16 mm
- Lower front end
- Frame reach
- −2 mm
- About the same reach
- Wheelbase
- −11 mm
- Shorter: quicker to change direction
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- −3 mm
- Shorter: livelier
The two frames
Specialized Roubaix SL4 Expert, 54Specialized Secteur Double, 52Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL4 Expert 54 | Specialized Secteur Double 52 | Difference |
|---|---|---|---|
| Reach | 380mm | 378mm | −2 mm |
| Stack | 563mm | 547mm | −16 mm |
| Head tube angle | 72° | 72° | ±0.0° |
| Seat tube angle | 73.5° | 74° | +0.5° |
| Effective top tube | 548mm | 537mm | −11 mm |
| Chainstay length | 415mm | 412mm | −3 mm |
| Wheelbase | 1000mm | 989mm | −11 mm |
| BB drop | 71.5mm | 73mm | +2 mm |
| Standover | 776mm | 756mm | −20 mm |
| Seat tube length | 495mm | 447mm | −48 mm |
| Head tube length | 165mm | 145mm | −20 mm |
Differences are the Specialized Secteur Double minus the Specialized Roubaix SL4 Expert. Full charts: 2015 Specialized Roubaix SL4 Expert, 2015 Specialized Secteur Double.
Where each sits in its class
Specialized Roubaix SL4 ExpertSpecialized Secteur Double
Each bike is ranked against the other road 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 Roubaix SL4 ExpertSL4 Expert | Specialized Secteur DoubleDouble |
|---|---|---|
| Frame | Specialized SL4 FACT | Specialized A1 Premium Aluminum |
| Shifter | Shimano Ultegra | Shimano Claris R2400 |
| Derailleur | Shimano Ultegra | Shimano Claris R2400 |
| Cassette | Shimano Ultegra | SunRace CS-8SP |
| Chain | Shimano Ultegra | KMC Z51 |
| Wheelset | Fulcrum S4 | Specialized AXIS Classic |
| Tire | Specialized Turbo Pro | Specialized Espoir Sport |
| Brake | Shimano Ultegra | Tektro caliper |
| Seatpost | Specialized CG-R | not listed |
| Saddle | Specialized Toupe Expert | Specialized Toupé Sport |
| Fork | not listed | Specialized FACT |
| Crankset | not listed | Shimano Claris |
| Chainring | not listed | Shimano 50/34 |
| Pedals | not listed | Specialized nylon flat |
| Stem | not listed | Specialized 3D-forged |
| Bar tape | not listed | Specialized Roubaix |
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