2014 Specialized Roubaix SL4 Pro Race vs 2016 Kona Private Jake
The S is the Kona Private Jake size closest to your 490.0 Specialized Roubaix SL4 Pro Race. 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 Pro Race in 490.0, the Kona Private Jake in S places the top of the head tube 9 mm higher and 7 mm further back, relative to the bottom bracket. Its wheelbase is 15 mm longer, which can contribute to stability at speed.
- Frame stack
- +9 mm
- Higher front end
- Frame reach
- −7 mm
- Shorter frame reach
- Wheelbase
- +15 mm
- Longer: steadier at speed
- Head angle
- −1.5°
- Slacker: calmer steering
- Chainstays
- +8 mm
- Longer: more planted
The two frames
Specialized Roubaix SL4 Pro Race, 490.0Kona Private Jake, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL4 Pro Race 490.0 | Kona Private Jake S | Difference |
|---|---|---|---|
| Reach | 378mm | 371 | −7 mm |
| Stack | 528mm | 537 | +9 mm |
| Head tube angle | 72° | 70.5 | −1.5° |
| Seat tube angle | 75.5° | 75 | −0.5° |
| Chainstay length | 412mm | 420 | +8 mm |
| Wheelbase | 983mm | 998 | +15 mm |
| Standover | 730mm | 740 | +10 mm |
| Seat tube length | 455mm | 480 | +25 mm |
| Head tube length | 125mm | 115 | −10 mm |
| Effective top tube | not listed | 515 | |
| BB drop | not listed | 70 | |
| Fork length | not listed | 395 |
Differences are the Kona Private Jake minus the Specialized Roubaix SL4 Pro Race. Full charts: 2014 Specialized Roubaix SL4 Pro Race, 2016 Kona Private Jake.
Where each sits in its class
Specialized Roubaix SL4 Pro RaceKona 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 Pro RaceSL4 Pro Race | 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 | SRAM Force 22 | SRAM Rival One |
| Derailleur | SRAM Force 22 | SRAM Rival One |
| Cassette | SRAM 1170 | SRAM Rival 11-32t 11spd |
| Chain | SRAM 1170 | KMC X11 |
| Wheelset | Roval Rapide CL 40 | Novatec 30 Disc |
| Tire | Specialized Turbo Pro | WTB Cross Boss 700x35c |
| Brake | SRAM Force, SRAM Force 22 | Tektro Spyre |
| Stem | Specialized Pro-Set | not listed |
| Seatpost | Specialized S-Works CG-R | not listed |
| Saddle | Specialized Romin Expert | WTB SL8 |
| Crankset | not listed | SRAM Rival One PF30 |
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