Stages
Stages Power LR Shimano Ultegra R8100
$864.99
Best Cycling Power Meters · head-to-head
Stages Power LR Shimano Ultegra R8100 vs Sigeyi AXO SL
A sourced, side-by-side comparison. Sigeyi AXO SL is cheaper at $389.5. Every spec and price links to its source.
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Sigeyi
Sigeyi AXO SL
$389.5Cheaper
Which is better: the Stages Power LR Shimano Ultegra R8100 or Sigeyi AXO SL?
On the specs we track, they're closely matched. The Sigeyi AXO SL is the cheaper at $389.5.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Stages Power LR Shimano Ultegra R8100 | Sigeyi AXO SL |
|---|---|---|
| US price | $864.99 | $389.5 |
| Brand | Stages | Sigeyi |
| Released | — | — |
| Mount type | crank-arm | spider |
| Measurement sides | dual-sided | — |
| Accuracy pct | 1.5 | 1 |
| Weight grams | 15 | — |
| Battery type | CR2032 | rechargeable-liion |
| Battery life hrs | 175 | 300 |
| Connectivity | ANT+/BLE | ANT+/BLE |
| Power balance measured | Yes | No |
| Cycling dynamics | — | Yes |
| Waterproof rating | IPX7 | IP67 |
| Warranty years | — | 2 |
Sources — Stages Power LR Shimano Ultegra R8100: stagescycling.com (verified 2026-07-13). Sigeyi AXO SL: sigeyishop.com (verified 2026-07-13).
What's the difference between the Stages Power LR Shimano Ultegra R8100 and Sigeyi AXO SL?
Where the two actually differ on the specs we track (6 of 11). Matching specs are omitted.
- Mount type: Stages Power LR Shimano Ultegra R8100 crank-arm vs Sigeyi AXO SL spider
- Accuracy pct: Stages Power LR Shimano Ultegra R8100 1.5 vs Sigeyi AXO SL 1
- Battery type: Stages Power LR Shimano Ultegra R8100 CR2032 vs Sigeyi AXO SL rechargeable-liion
- Battery life hrs: Stages Power LR Shimano Ultegra R8100 175 vs Sigeyi AXO SL 300
- Power balance measured: Stages Power LR Shimano Ultegra R8100 true vs Sigeyi AXO SL false
- Waterproof rating: Stages Power LR Shimano Ultegra R8100 IPX7 vs Sigeyi AXO SL IP67