2016 Kona Private Jake vs 2017 Specialized Roubaix SL4
The 56 is the Specialized Roubaix SL4 size closest to your ML 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 ML, the Specialized Roubaix SL4 in 56 places the top of the head tube 9 mm higher and about as far forward, relative to the bottom bracket. Its wheelbase is 11 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- +9 mm
- Higher front end
- Frame reach
- −1 mm
- About the same reach
- Wheelbase
- −11 mm
- Shorter: quicker to change direction
- Head angle
- +1.0°
- Steeper: sharper steering
- Chainstays
- −5 mm
- Shorter: livelier
The two frames
Kona Private Jake, MLSpecialized Roubaix SL4, 56Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Kona Private Jake ML | Specialized Roubaix SL4 56 | Difference |
|---|---|---|---|
| Reach | 388 | 387mm | −1 mm |
| Stack | 581 | 590mm | +9 mm |
| Head tube angle | 71.5 | 72.5° | +1.0° |
| Seat tube angle | 73.5 | 73.25° | −0.3° |
| Effective top tube | 560 | 565mm | +5 mm |
| Chainstay length | 420 | 415mm | −5 mm |
| Wheelbase | 1022 | 1011mm | −11 mm |
| BB drop | 67.5 | 71.5mm | +4 mm |
| Standover | 800 | 798mm | −2 mm |
| Seat tube length | 540 | 515mm | −25 mm |
| Fork length | 395 | 368mm | −27 mm |
| Head tube length | 160 | 190mm | +30 mm |
| BB height | not listed | 271mm |
Differences are the Specialized Roubaix SL4 minus the Kona Private Jake. Full charts: 2016 Kona Private Jake, 2017 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 SL4SL4 |
|---|---|---|
| Frame | Kona Race Light 7005 Aluminum Butted | Specialized SL4 FACT |
| Fork | Kona Full Carbon CX Race Disc | not listed |
| Shifter | SRAM Rival One | Shimano Tiagra |
| Derailleur | SRAM Rival One | Shimano Tiagra |
| Cassette | SRAM Rival 11-32t 11spd | Shimano Tiagra |
| Chain | KMC X11 | KMC X-10 |
| Crankset | SRAM Rival One PF30 | Praxis Alba |
| Wheelset | Novatec 30 Disc | Specialized AXIS Elite |
| Tire | WTB Cross Boss 700x35c | Specialized Espoir Elite |
| Brake | Tektro Spyre | Specialized Axis 1.0 |
| Saddle | WTB SL8 | Specialized Toupé Sport |
| Seatpost | not listed | Specialized CG-R |
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
