2014 Specialized Roubaix SL4 Sport vs 2016 Kona Private Jake
The XL is the Kona Private Jake size closest to your 610.0 Specialized Roubaix SL4 Sport. 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 Sport in 610.0, the Kona Private Jake in XL places the top of the head tube 24 mm lower and about as far forward, relative to the bottom bracket. Its wheelbase is 7 mm longer, which can contribute to stability at speed.
- Frame stack
- −24 mm
- Lower front end
- Frame reach
- +2 mm
- About the same reach
- Wheelbase
- +7 mm
- Longer: steadier at speed
- Head angle
- −1.5°
- Slacker: calmer steering
- Chainstays
- ±0 mm
- About the same
The two frames
Specialized Roubaix SL4 Sport, 610.0Kona Private Jake, XLDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL4 Sport 610.0 | Kona Private Jake XL | Difference |
|---|---|---|---|
| Reach | 398mm | 400 | +2 mm |
| Stack | 643mm | 619 | −24 mm |
| Head tube angle | 73° | 71.5 | −1.5° |
| Seat tube angle | 72.5° | 72.5 | ±0.0° |
| Chainstay length | 420mm | 420 | ±0 mm |
| Wheelbase | 1039mm | 1046 | +7 mm |
| Standover | 851mm | 845 | −6 mm |
| Seat tube length | 565mm | 590 | +25 mm |
| Head tube length | 245mm | 200 | −45 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 Sport. Full charts: 2014 Specialized Roubaix SL4 Sport, 2016 Kona Private Jake.
Where each sits in its class
Specialized Roubaix SL4 SportKona 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 SportSL4 Sport 105 | 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 105 | SRAM Rival One |
| Derailleur | Shimano Tiagra, Shimano 105 | SRAM Rival One |
| Cassette | Shimano Tiagra | SRAM Rival 11-32t 11spd |
| Chain | KMC X10 | KMC X11 |
| Crankset | FSA Gossamer | SRAM Rival One PF30 |
| Wheelset | Specialized AXIS 2.0 | Novatec 30 Disc |
| Tire | Specialized Espoir Elite | WTB Cross Boss 700x35c |
| Brake | Specialized Axis 1.0, Shimano 105 | Tektro Spyre |
| Stem | Specialized Comp-Set | not listed |
| Saddle | Specialized Romin | WTB SL8 |
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