2022 Specialized Crux vs 2023 Cervélo Áspero RX815
The 51 is the Cervélo Áspero RX815 size closest to your 49 Specialized Crux. 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 Cervélo Áspero RX815
Compared with the Specialized Crux in 49, the Cervélo Áspero RX815 in 51 places the top of the head tube at about the same height and 4 mm further forward, relative to the bottom bracket. Its wheelbase is 8 mm shorter, which can contribute to quicker direction changes.
- Frame stack
- ±0 mm
- About the same height
- Frame reach
- +4 mm
- Longer frame reach
- Wheelbase
- −8 mm
- Shorter: quicker to change direction
- Head angle
- +1.0°
- Steeper: sharper steering
- Chainstays
- −5 mm
- Shorter: livelier
The two frames
Specialized Crux, 49Cervélo Áspero RX815, 51Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Specialized Crux 49 | Cervélo Áspero RX815 51 | Difference |
|---|---|---|---|
| Reach | 375 | 379 | +4 mm |
| Stack | 530 | 530 | ±0 mm |
| Head tube angle | 70.5° | 71.5 | +1.0° |
| Seat tube angle | 75.5° | 74 | −1.5° |
| Chainstay length | 425mm | 420 | −5 mm |
| Wheelbase | 1008mm | 1000 | −8 mm |
| BB drop | 74mm | 78.5 | +5 mm |
| BB height | 284mm | not listed | |
| Standover | 749mm | 732 | −17 mm |
| Seat tube length | 466mm | not listed | |
| Fork length | 401mm | not listed | |
| Head tube length | 100mm | 107 | +7 mm |
| Effective top tube | not listed | 532 |
Differences are the Cervélo Áspero RX815 minus the Specialized Crux. Full charts: 2022 Specialized Crux, 2023 Cervélo Áspero RX815.
Where each sits in its class
Specialized CruxCervélo Áspero RX815
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 CruxCrux Frameset | Cervélo Áspero RX815GRX RX815 Di2 |
|---|---|---|
| Frame | Specialized CruX FACT | not listed |
| Fork | not listed | Cervélo Aspero Fork |
| Cassette | not listed | Shimano HG800 |
| Crankset | not listed | Shimano GRX RX810 |
| Tire | not listed | Panaracer Gravel King SK |
| Headset | not listed | FSA IS2 |
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