2026 Specialized Diverge 4 Pro vs 2026 Fairlight Faran Shimano RX825
The Fairlight Faran Shimano RX825 size closest to your 54 is the 54T. Compare the 54T instead
What changes on the Fairlight Faran Shimano RX825
Compared with the Specialized Diverge 4 Pro in 54, the Fairlight Faran Shimano RX825 in 58R places the top of the head tube at about the same height and 17 mm further forward, relative to the bottom bracket. Its wheelbase is 15 mm longer, which can contribute to stability at speed.
- Frame stack
- +2 mm
- About the same height
- Frame reach
- +17 mm
- Longer frame reach
- Wheelbase
- +15 mm
- Longer: steadier at speed
- Head angle
- +1.5°
- Steeper: sharper steering
- Chainstays
- +2 mm
- About the same
The two frames
Specialized Diverge 4 Pro, 54Fairlight Faran Shimano RX825, 58RDrawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Diverge 4 Pro 54 | Fairlight Faran Shimano RX825 58R | Difference |
|---|---|---|---|
| Reach | 387mm | 404 | +17 mm |
| Stack | 592mm | 594 | +2 mm |
| Head tube angle | 71° | 72.5 | +1.5° |
| Seat tube angle | 74° | 73.5 | −0.5° |
| Effective top tube | 556mm | not listed | |
| Chainstay length | 430mm | 432 | +2 mm |
| Wheelbase | 1041mm | 1056 | +15 mm |
| BB drop | 85mm | not listed | |
| Standover | 754mm | not listed | |
| Seat tube length | 470mm | not listed | |
| Fork length | 391mm | not listed | |
| Head tube length | 116mm | not listed |
Differences are the Fairlight Faran Shimano RX825 minus the Specialized Diverge 4 Pro. Full charts: 2026 Specialized Diverge 4 Pro, 2026 Fairlight Faran Shimano RX825.
Where each sits in its class
Specialized Diverge 4 ProFairlight Faran Shimano RX825
Each bike is ranked against the other gravel 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 Diverge 4 ProPro | Fairlight Faran Shimano RX825Shimano GRX Di2 RX825 2x |
|---|---|---|
| Frame | Specialized Diverge FACT | Fairlight Faran 3.0 |
| Fork | Specialized Future Shock 3.3 | Fairlight Faran 3.0 Steel |
| Shifter | SRAM Force AXS E1 | Shimano GRX RX825 Di2 |
| Derailleur | SRAM Force AXS E1 XPLR | Shimano GRX RX825 Di2 |
| Cassette | SRAM Force E1 XPLR | Shimano HG710/M7000 |
| Chain | SRAM Force XPLR | not listed |
| Crankset | SRAM Force E1 XPLR | Shimano FC-RX820-2 |
| Bottom bracket | SRAM DUB | not listed |
| Wheelset | Roval Terra CL | Hope RX24/Fortus 26 Pro5 |
| Tire | Specialized Tracer TLR All Terrain Gravel | Panaracer Gravel King X1 |
| Brake | SRAM Force E1 | Shimano GRX Di2 |
| Handlebar | Roval Terra | FSA Adventure |
| Seatpost | Roval Terra | SL-K |
| Saddle | Specialized Power Pro Mirror | not listed |
| Chainring | not listed | Shimano GRX RX820 |
| Rotor | not listed | Shimano RT-801 |
| Stem | not listed | Gossamer Energy |
| Headset | not listed | Hope Standard |
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