2014 Specialized Roubaix SL4 Pro vs 2016 Kona Private Jake
The S/M is the Kona Private Jake size closest to your 520.0 Specialized Roubaix SL4 Pro. 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 in 520.0, the Kona Private Jake in S/M places the top of the head tube at about the same height and about as far forward, relative to the bottom bracket. Its wheelbase is 19 mm longer, which can contribute to stability at speed.
- Frame stack
- −1 mm
- About the same height
- Frame reach
- ±0 mm
- About the same reach
- Wheelbase
- +19 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, 520.0Kona Private Jake, S/MDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL4 Pro 520.0 | Kona Private Jake S/M | Difference |
|---|---|---|---|
| Reach | 379mm | 379 | ±0 mm |
| Stack | 547mm | 546 | −1 mm |
| Head tube angle | 72° | 70.5 | −1.5° |
| Seat tube angle | 74° | 74.5 | +0.5° |
| Chainstay length | 412mm | 420 | +8 mm |
| Wheelbase | 990mm | 1009 | +19 mm |
| Standover | 756mm | 755 | −1 mm |
| Seat tube length | 475mm | 495 | +20 mm |
| Head tube length | 145mm | 125 | −20 mm |
| Effective top tube | not listed | 530 | |
| BB drop | not listed | 70 | |
| Fork length | not listed | 395 |
Differences are the Kona Private Jake minus the Specialized Roubaix SL4 Pro. Full charts: 2014 Specialized Roubaix SL4 Pro, 2016 Kona Private Jake.
Where each sits in its class
Specialized Roubaix SL4 ProKona 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 ProSL4 Pro | Kona Private JakePrivate Jake |
|---|---|---|
| Frame | Specialized SL4 FACT | Kona Race Light 7005 Aluminum Butted |
| Fork | Specialized Roubaix FACT | Kona Full Carbon CX Race Disc |
| Seatpost | Specialized S-Works CG-R | not listed |
| Shifter | not listed | SRAM Rival One |
| Derailleur | not listed | SRAM Rival One |
| Cassette | not listed | SRAM Rival 11-32t 11spd |
| Chain | not listed | KMC X11 |
| Crankset | not listed | SRAM Rival One PF30 |
| Wheelset | not listed | Novatec 30 Disc |
| Tire | not listed | WTB Cross Boss 700x35c |
| Brake | not listed | Tektro Spyre |
| Saddle | not listed | WTB SL8 |
Know what is on every bike.
Add your bike to Quiver. Keep its parts, setup, and service history together, then share your build.
Explore the app
