2025 Cervélo Áspero RX827 vs 2027 Specialized Crux 5 Sport Shimano
The 49 is the Specialized Crux 5 Sport Shimano size closest to your 48 Cervélo Áspero RX827. 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 Crux 5 Sport Shimano
Compared with the Cervélo Áspero RX827 in 48, the Specialized Crux 5 Sport Shimano in 49 places the top of the head tube 30 mm higher and 6 mm further forward, relative to the bottom bracket. Its wheelbase is 15 mm longer, which can contribute to stability at speed.
- Frame stack
- +30 mm
- Higher front end
- Frame reach
- +6 mm
- Longer frame reach
- Wheelbase
- +15 mm
- Longer: steadier at speed
- Head angle
- −0.1°
- About the same head angle
- Chainstays
- +3 mm
- About the same
The two frames
Cervélo Áspero RX827, 48Specialized Crux 5 Sport Shimano, 49Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Cervélo Áspero RX827 48 | Specialized Crux 5 Sport Shimano 49 | Difference |
|---|---|---|---|
| Reach | 369 | 375 | +6 mm |
| Stack | 500 | 530 | +30 mm |
| Head tube angle | 70.6 | 70.5 | −0.1° |
| Seat tube angle | 74.1 | 75.5 | +1.4° |
| Effective top tube | 516 | 512 | −4 mm |
| Chainstay length | 422.5 | 425 | +3 mm |
| Wheelbase | 993 | 1008 | +15 mm |
| BB drop | 80 | 80 | ±0 mm |
| Standover | 720 | 753 | +33 mm |
| Head tube length | 75 | 95 | +20 mm |
| BB height | not listed | 278 | |
| Seat tube length | not listed | 445 | |
| Fork length | not listed | 401 |
Differences are the Specialized Crux 5 Sport Shimano minus the Cervélo Áspero RX827. Full charts: 2025 Cervélo Áspero RX827, 2027 Specialized Crux 5 Sport Shimano.
Where each sits in its class
Cervélo Áspero RX827Specialized Crux 5 Sport Shimano
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 | Cervélo Áspero RX827GRX RX827 Di2 | Specialized Crux 5 Sport ShimanoSport - Shimano GRX 800 |
|---|---|---|
| Cassette | Shimano GRX | Shimano XT M8100 |
| Crankset | Shimano GRX | Shimano GRX RX820 |
| Wheelset | Reserve 40|44TA GR | not listed |
| Handlebar | Cervélo Carbon | Specialized Adventure Gear |
| Seatpost | Cervélo Carbon | S Works Tarmac SL8 |
| Frame | not listed | Specialized Crux 5 |
| Fork | not listed | S Works FACT |
| Shifter | not listed | Shimano GRX RX820 |
| Derailleur | not listed | Shimano RD-RX822-GS GRX |
| Chain | not listed | Shimano XT M8100 |
| Tire | not listed | Pathfinder |
| Brake | not listed | Shimano GRX RX820 |
| Stem | not listed | Roval Rapide |
| Bar tape | not listed | Supacaz Super Sticky Kush |
| Saddle | not listed | Specialized Power Sport |
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