2016 Kona Private Jake vs 2015 Specialized Roubaix SL4
The 58 is the Specialized Roubaix SL4 size closest to your XL Kona Private Jake. 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 Roubaix SL4
Compared with the Kona Private Jake in XL, the Specialized Roubaix SL4 in 58 places the top of the head tube at about the same height and 8 mm further back, relative to the bottom bracket. Its wheelbase is 17 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +2 mm
- About the same height
- Frame reach
- −8 mm
- Shorter frame reach
- Wheelbase
- −17 mm
- Shorter: quicker to change direction
- Head angle
- +1.0°
- Steeper: sharper steering
- Chainstays
- −2 mm
- About the same
The two frames
Kona Private Jake, XLSpecialized Roubaix SL4, 58Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Kona Private Jake XL | Specialized Roubaix SL4 58 | Difference |
|---|---|---|---|
| Reach | 400 | 392mm | −8 mm |
| Stack | 619 | 621mm | +2 mm |
| Head tube angle | 71.5 | 72.5° | +1.0° |
| Seat tube angle | 72.5 | 73° | +0.5° |
| Effective top tube | 595 | 582mm | −13 mm |
| Chainstay length | 420 | 418mm | −2 mm |
| Wheelbase | 1046 | 1029mm | −17 mm |
| BB drop | 67.5 | 70mm | +3 mm |
| Standover | 845 | 829mm | −16 mm |
| Seat tube length | 590 | 540mm | −50 mm |
| Fork length | 395 | not listed | |
| Head tube length | 200 | 225mm | +25 mm |
Differences are the Specialized Roubaix SL4 minus the Kona Private Jake. Full charts: 2016 Kona Private Jake, 2015 Specialized Roubaix SL4.
Where each sits in its class
Kona Private JakeSpecialized Roubaix SL4
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 | Kona Private JakePrivate Jake | Specialized Roubaix SL4S-Works SL4 |
|---|---|---|
| Frame | Kona Race Light 7005 Aluminum Butted | Specialized S-Works SL4 FACT |
| Fork | Kona Full Carbon CX Race Disc | not listed |
| Shifter | SRAM Rival One | not listed |
| Derailleur | SRAM Rival One | not listed |
| Cassette | SRAM Rival 11-32t 11spd | not listed |
| Chain | KMC X11 | not listed |
| Crankset | SRAM Rival One PF30 | not listed |
| Wheelset | Novatec 30 Disc | not listed |
| Tire | WTB Cross Boss 700x35c | not listed |
| Brake | Tektro Spyre | not listed |
| Saddle | WTB SL8 | not listed |
| Seatpost | not listed | Specialized CG-R |
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