2016 Specialized Diverge Pro vs 2018 Surly Midnight Special
The 64 is the Surly Midnight Special size closest to your 61.0 Specialized Diverge 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 Surly Midnight Special
Compared with the Specialized Diverge Pro in 61.0, the Surly Midnight Special in 64 places the top of the head tube at about the same height and 25 mm further forward, relative to the bottom bracket. Its wheelbase is 11 mm longer, which can contribute to stability at speed.
- Frame stack
- −2 mm
- About the same height
- Frame reach
- +25 mm
- Longer frame reach
- Wheelbase
- +11 mm
- Longer: steadier at speed
- Head angle
- +1.0°
- Steeper: sharper steering
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Specialized Diverge Pro, 61.0Surly Midnight Special, 64Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Diverge Pro 61.0 | Surly Midnight Special 64 | Difference |
|---|---|---|---|
| Reach | 398 | 423 | +25 mm |
| Stack | 643 | 641 | −2 mm |
| Head tube angle | 73 | 74.0 | +1.0° |
| Seat tube angle | 72.5 | 72.5 | ±0.0° |
| Effective top tube | 601 | 625 | +24 mm |
| Chainstay length | 420 | 425 | +5 mm |
| Wheelbase | 1039 | 1050 | +11 mm |
| BB drop | 74 | 65 | −9 mm |
| BB height | 273 | not listed | |
| Standover | 851 | 895 | +44 mm |
| Seat tube length | 555 | 640 | +85 mm |
| Fork length | 390 | 400 | +10 mm |
| Head tube length | 220 | 200 | −20 mm |
Differences are the Surly Midnight Special minus the Specialized Diverge Pro. Full charts: 2016 Specialized Diverge Pro, 2018 Surly Midnight Special.
Where each sits in its class
Specialized Diverge ProSurly Midnight Special
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 ProPro | Surly Midnight SpecialMidnight Special |
|---|---|---|
| Fork | Specialized FACT carbon | not listed |
| Shifter | Shimano 685 | SRAM Rival 22 |
| Derailleur | Shimano Dura-Ace | SRAM Rival 22 |
| Cassette | Shimano Ultegra | SunRace CS-MS8 |
| Chain | Shimano Ultegra | KMC X11 |
| Crankset | Specialized Pro | SRAM S390 |
| Wheelset | Roval Control | Alex Rims Adventurer 2 |
| Tire | Specialized Roubaix Pro | WTB Horizon Road Plus |
| Brake | Shimano BR-785 | TRP Spyre |
| Handlebar | Specialized Expert | Salsa Cowbell 3 |
| Stem | Specialized Pro SL | Promax DA-296 |
| Bar tape | Specialized Roubaix | not listed |
| Seatpost | Specialized CG-R | Promax SP-2019 |
| Saddle | Specialized Phenom Expert | WTB Volt Sport |
| Frame | not listed | Surly Midnight Special |
| Chainring | not listed | SRAM Rival 22 |
| Bottom bracket | not listed | SRAM S390 |
| Rotor | not listed | TRP Spyre |
| Headset | not listed | Cane Creek 40 |
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