2014 Specialized Roubaix SL4 Comp Compact vs 2016 Kona Private Jake
The XL is the Kona Private Jake size closest to your 580.0 Specialized Roubaix SL4 Comp Compact. 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 Kona Private Jake
Compared with the Specialized Roubaix SL4 Comp Compact in 580.0, the Kona Private Jake in XL places the top of the head tube 3 mm lower and 8 mm further forward, relative to the bottom bracket. Its wheelbase is 17 mm longer, which can contribute to stability at speed.
- Frame stack
- −3 mm
- Lower front end
- Frame reach
- +8 mm
- Longer frame reach
- Wheelbase
- +17 mm
- Longer: steadier at speed
- Head angle
- −1.0°
- Slacker: calmer steering
- Chainstays
- +2 mm
- About the same
The two frames
Specialized Roubaix SL4 Comp Compact, 580.0Kona Private Jake, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL4 Comp Compact 580.0 | Kona Private Jake XL | Difference |
|---|---|---|---|
| Reach | 392mm | 400 | +8 mm |
| Stack | 622mm | 619 | −3 mm |
| Head tube angle | 72.5° | 71.5 | −1.0° |
| Seat tube angle | 73° | 72.5 | −0.5° |
| Chainstay length | 418mm | 420 | +2 mm |
| Wheelbase | 1029mm | 1046 | +17 mm |
| Standover | 829mm | 845 | +16 mm |
| Seat tube length | 540mm | 590 | +50 mm |
| Head tube length | 225mm | 200 | −25 mm |
| Effective top tube | not listed | 595 | |
| BB drop | not listed | 67.5 | |
| Fork length | not listed | 395 |
Differences are the Kona Private Jake minus the Specialized Roubaix SL4 Comp Compact. Full charts: 2014 Specialized Roubaix SL4 Comp Compact, 2016 Kona Private Jake.
Where each sits in its class
Specialized Roubaix SL4 Comp CompactKona Private Jake
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 Comp CompactSL4 Comp Compact | Kona Private JakePrivate Jake |
|---|---|---|
| Frame | Specialized SL4 FACT | Kona Race Light 7005 Aluminum Butted |
| Fork | Specialized Roubaix FACT | Kona Full Carbon CX Race Disc |
| Shifter | Shimano Ultegra | SRAM Rival One |
| Derailleur | Shimano Ultegra | SRAM Rival One |
| Cassette | Shimano Ultegra | SRAM Rival 11-32t 11spd |
| Chain | KMC X11L | KMC X11 |
| Crankset | FSA Gossamer Pro | SRAM Rival One PF30 |
| Wheelset | Fulcrum S5 | Novatec 30 Disc |
| Tire | Specialized Espoir Elite | WTB Cross Boss 700x35c |
| Brake | Specialized AXIS 2.0, Shimano Ultegra | Tektro Spyre |
| Stem | Specialized Expert Pro-Set | not listed |
| Saddle | Specialized Romin | WTB SL8 |
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