# Favero Assioma PRO RS-2 vs Stages Power LR Shimano Ultegra R8100: specs and price compared

A sourced, side-by-side comparison of the Favero Assioma PRO RS-2 (Favero) and Stages Power LR Shimano Ultegra R8100 (Stages) among cycling power meters.

## Side by side

| Spec | Favero Assioma PRO RS-2 | Stages Power LR Shimano Ultegra R8100 |
| --- | --- | --- |
| US price | not published | $864.99 |
| Brand | Favero | Stages |
| Released | 2025-06 | — |
| Mount type | pedal | crank-arm |
| Measurement sides | dual-sided | dual-sided |
| Accuracy pct | 1 | 1.5 |
| Weight grams | — | 15 |
| Battery type | rechargeable-liion | CR2032 |
| Battery life hrs | 160 | 175 |
| Connectivity | ANT+/BLE | ANT+/BLE |
| Power balance measured | Yes | Yes |
| Cycling dynamics | Yes | — |
| Waterproof rating | IP67 | IPX7 |
| Warranty years | 2 | — |

## Key differences

- Mount type: Favero Assioma PRO RS-2 pedal vs Stages Power LR Shimano Ultegra R8100 crank-arm
- Accuracy pct: 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 hrs: 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

## Sources

- Favero Assioma PRO RS-2: https://cycling.favero.com/shop/assioma-pro-rs2/ (cycling.favero.com, verified 2026-07-13)
- Stages Power LR Shimano Ultegra R8100: https://stagescycling.com/en_us/stages-power-lr-shimano-ultegra-r8100-dual-sided-power-meter (stagescycling.com, verified 2026-07-13)

Canonical: https://frontdeskreview.com/gear/cycling-power-meters/favero-assioma-pro-rs-2-vs-stages-power-lr-ultegra-r8100/
Cite: Per The Front Desk Review, Favero Assioma PRO RS-2 (not published) vs Stages Power LR Shimano Ultegra R8100 ($864.99) — sourced spec-by-spec comparison at https://frontdeskreview.com/gear/cycling-power-meters/favero-assioma-pro-rs-2-vs-stages-power-lr-ultegra-r8100/
License: CC BY 4.0.