2014 Specialized Roubaix SL4 Expert vs 2016 Kona Private Jake
The Kona Private Jake size closest to your 540.0 is the M. Compare the M instead
What changes on the Kona Private Jake
Compared with the Specialized Roubaix SL4 Expert in 540.0, the Kona Private Jake in S places the top of the head tube 27 mm lower and 9 mm further back, relative to the bottom bracket.
- Frame stack
- −27 mm
- Lower front end
- Frame reach
- −9 mm
- Shorter frame reach
- Wheelbase
- −2 mm
- About the same
- Head angle
- −1.5°
- Slacker: calmer steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Specialized Roubaix SL4 Expert, 540.0Kona Private Jake, SDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Roubaix SL4 Expert 540.0 | Kona Private Jake S | Difference |
|---|---|---|---|
| Reach | 380mm | 371 | −9 mm |
| Stack | 564mm | 537 | −27 mm |
| Head tube angle | 72° | 70.5 | −1.5° |
| Seat tube angle | 73.5° | 75 | +1.5° |
| Chainstay length | 415mm | 420 | +5 mm |
| Wheelbase | 1000mm | 998 | −2 mm |
| Standover | 776mm | 740 | −36 mm |
| Seat tube length | 495mm | 480 | −15 mm |
| Head tube length | 165mm | 115 | −50 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 Expert. Full charts: 2014 Specialized Roubaix SL4 Expert, 2016 Kona Private Jake.
Where each sits in its class
Specialized Roubaix SL4 ExpertKona 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 ExpertSL4 Expert | 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 | Shimano Ultegra | KMC X11 |
| Crankset | FSA SL-K | SRAM Rival One PF30 |
| Wheelset | Fulcrum S4 | Novatec 30 Disc |
| Tire | Specialized Roubaix Pro | WTB Cross Boss 700x35c |
| Brake | Shimano Ultegra | Tektro Spyre |
| Stem | Specialized Expert Pro-Set | not listed |
| Seatpost | Specialized S-Works CG-R | not listed |
| Saddle | Specialized Romin Expert | WTB SL8 |
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