2024 Ridley Grifn RS GRX800 vs 2026 Cervélo Áspero RX825
The 56 is the Cervélo Áspero RX825 size closest to your M Ridley Grifn RS GRX800. 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 RX825
Compared with the Ridley Grifn RS GRX800 in M, the Cervélo Áspero RX825 in 56 places the top of the head tube 7 mm lower and 6 mm further forward, relative to the bottom bracket. Its wheelbase is 7 mm longer, which can contribute to stability at speed.
- Frame stack
- −7 mm
- Lower front end
- Frame reach
- +6 mm
- Longer frame reach
- Wheelbase
- +7 mm
- Longer: steadier at speed
- Head angle
- ±0.0°
- About the same head angle
- Chainstays
- +5 mm
- Longer: more planted
The two frames
Ridley Grifn RS GRX800, MCervélo Áspero RX825, 56Drawn to scale and lined up at the bottom bracket.
Geometry side by side
| Measurement | Ridley Grifn RS GRX800 M | Cervélo Áspero RX825 56 | Difference |
|---|---|---|---|
| Reach | 391 | 397 | +6 mm |
| Stack | 587 | 580 | −7 mm |
| Head tube angle | 72 | 72 | ±0.0° |
| Seat tube angle | 73.5 | 73 | −0.5° |
| Effective top tube | 565 | not listed | |
| Chainstay length | 420 | 425 | +5 mm |
| Wheelbase | 1021 | 1028 | +7 mm |
| BB drop | not listed | not listed | |
| Standover | 814 | 757 | −57 mm |
| Seat tube length | 520 | not listed | |
| Head tube length | not listed | 159 |
Differences are the Cervélo Áspero RX825 minus the Ridley Grifn RS GRX800. Full charts: 2024 Ridley Grifn RS GRX800, 2026 Cervélo Áspero RX825.
Where each sits in its class
Ridley Grifn RS GRX800Cervélo Áspero 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 | Ridley Grifn RS GRX800GRX800 DI2 | Cervélo Áspero RX825GRX RX825 Di2 |
|---|---|---|
| Frame | Ridley Grifn RS | Cervélo Áspero |
| Fork | 4za AllRoad RS | not listed |
| Shifter | Shimano GRX Di2 | Shimano GRX RX825 Di2 |
| Derailleur | Shimano GRX Di2 | Shimano GRX RX825 Di2 |
| Cassette | Shimano Ultegra | Shimano 10-51T, 12-speed |
| Crankset | Shimano GRX RX820 | Shimano GRX FC-RX600 |
| Chainring | Shimano GRX RX820 | not listed |
| Wheelset | DT Swiss GRC1600 | Reserve 40|44TA GR |
| Tire | Vittoria Terreno Dry | not listed |
| Handlebar | 4za Nimbus Pro | not listed |
| Stem | Forza Cirrus Pro Integrated Flared | not listed |
| Seatpost | Forza Aero | not listed |
| Saddle | Selle Italia SLR Advan L3 | not listed |
| Bottom bracket | not listed | Cervélo T47a |
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