Garmin
Garmin Rally RS200
$1099.99
Best Cycling Power Meters · head-to-head
Garmin Rally RS200 vs 4iiii Precision 3+
A sourced, side-by-side comparison. Garmin Rally RS200 is cheaper at $1099.99. Every spec and price links to its source.
4iiii
4iiii Precision 3+
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Garmin Rally RS200 | 4iiii Precision 3+ |
|---|---|---|
| US price | $1099.99 | — |
| Brand | Garmin | 4iiii |
| Released | — | — |
| Mount type | pedal | crank-arm |
| Measurement sides | dual-sided | single-sided |
| Accuracy pct | 1 | 1 |
| Weight grams | 320 | 9 |
| Battery type | CR1/3N | CR2032 |
| Battery life hrs | 120 | 800 |
| Connectivity | ANT+/BLE | ANT+/BLE |
| Power balance measured | Yes | No |
| Cycling dynamics | Yes | Yes |
| Waterproof rating | IPX7 | IPX7 |
| Warranty years | — | 3 |
Sources — Garmin Rally RS200: garmin.com (verified 2026-07-13). 4iiii Precision 3+: 4iiii.com (verified 2026-07-13).
What's the difference between the Garmin Rally RS200 and 4iiii Precision 3+?
Where the two actually differ on the specs we track (6 of 11). Matching specs are omitted.
- Mount type: Garmin Rally RS200 pedal vs 4iiii Precision 3+ crank-arm
- Measurement sides: Garmin Rally RS200 dual-sided vs 4iiii Precision 3+ single-sided
- Weight grams: Garmin Rally RS200 320 vs 4iiii Precision 3+ 9
- Battery type: Garmin Rally RS200 CR1/3N vs 4iiii Precision 3+ CR2032
- Battery life hrs: Garmin Rally RS200 120 vs 4iiii Precision 3+ 800
- Power balance measured: Garmin Rally RS200 true vs 4iiii Precision 3+ false
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Garmin Rally RS200
Two whitelisted cycling testers cover the exact RS200 and both rate the system accurate, clean-looking and versatile but pricey. BikeRadar reviewed the RS200 directly (4.5/5); DC Rainmaker bench-tested the RS200 SPD-SL variant against a Tacx NEO 2 and Stages LR (RS200 tracked near-identical to the Stages), and weighed the SPD-SL cleats at 40 g/side. BikeRadar flags the premium price and slightly delayed pickup from a stop; DCR noted the unit failed to compensate for a temperature shift on a cold day, fixable with a manual zero-offset. (Cycling Weekly was dropped: its hands-on test pair was the RK200 Look-Keo trim, not the RS200.) (2 sourced reviews, 1 lab-tested.)
Praised: Accurate, reliable power data that tracks closely with reference power meters (Stages, Quarq); Best-in-class cleat compatibility — one spindle swappable across road and off-road pedal bodies; Clean, normal-looking pedals carried over from the Vector 3.
Flagged: Premium price versus rivals like the Favero Assioma; Weak temperature compensation — needs a manual zero-offset after temperature shifts; Slightly delayed data pick-up when starting from a complete stop.
4iiii Precision 3+
No sourced tester review yet.