Favero
Favero Assioma PRO RS-2
—
Released 2025-06
Best Cycling Power Meters · head-to-head
Favero Assioma PRO RS-2 vs Stages Power LR Shimano Ultegra R8100
A sourced, side-by-side comparison. Stages Power LR Shimano Ultegra R8100 is cheaper at $889.99. Every spec and price links to its source.
Stages
Stages Power LR Shimano Ultegra R8100
$889.99
Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec |  Favero Assioma PRO RS-2 |  Stages Power LR Shimano Ultegra R8100 |
|---|---|---|
| US price | — | $889.99 |
| Brand | Favero | Stages |
| Released | 2025-06 | — |
| Mount type | pedal | crank-arm |
| Measurement sides | dual-sided | dual-sided |
| Accuracy (%) | 1 | 1.5 |
| Weight grams | — | 15 |
| Battery type | rechargeable-liion | CR2032 |
| Battery life (hr) | 160 | 175 |
| Connectivity | ANT+/BLE | ANT+/BLE |
| Power balance measured | Yes | Yes |
| Cycling dynamics | Yes | — |
| Waterproof rating | IP67 | IPX7 |
| Warranty years | 2 | — |
Sources — Favero Assioma PRO RS-2: cycling.favero.com (verified 2026-07-13). Stages Power LR Shimano Ultegra R8100: stagescycling.com (verified 2026-09-17).
What's the difference between the Favero Assioma PRO RS-2 and Stages Power LR Shimano Ultegra R8100?
Where the two actually differ on the specs we track (5 of 11). Matching specs are omitted.
- Mount type: Favero Assioma PRO RS-2 pedal vs Stages Power LR Shimano Ultegra R8100 crank-arm
- Accuracy (%): Favero Assioma PRO RS-2 1 vs Stages Power LR Shimano Ultegra R8100 1.5
- Battery type: Favero Assioma PRO RS-2 rechargeable-liion vs Stages Power LR Shimano Ultegra R8100 CR2032
- Battery life (hr): Favero Assioma PRO RS-2 160 vs Stages Power LR Shimano Ultegra R8100 175
- Waterproof rating: Favero Assioma PRO RS-2 IP67 vs Stages Power LR Shimano Ultegra R8100 IPX7