Keiser
Keiser M3i Indoor Bike
$2985
Released 2019
Best Exercise Bikes · head-to-head
Keiser M3i Indoor Bike vs BODi Bike (formerly MYX II)
A sourced, side-by-side comparison. BODi Bike (formerly MYX II) is cheaper at $1399. Every spec and price links to its source.
BODi (Beachbody)
BODi Bike (formerly MYX II)
$1399Cheaper
Released 2021
Which is better: the Keiser M3i Indoor Bike or BODi Bike (formerly MYX II)?
The Keiser M3i Indoor Bike wins 1 of the 1 specs we compare head to head; the other wins 0. The BODi Bike (formerly MYX II) is the cheaper at $1399. Get the Keiser M3i Indoor Bike for the stronger spec sheet, the BODi Bike (formerly MYX II) to spend less.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Keiser M3i Indoor Bike | BODi Bike (formerly MYX II) |
|---|---|---|
| US price | $2985 | $1399 |
| Brand | Keiser | BODi (Beachbody) |
| Released | 2019 | 2021 |
| Bike type | indoor | indoor |
| Resistance type | eddy current magnetic (non-contact) | friction |
| Resistance levels | 24 | — |
| Touchscreen (in) | — | 21.5 |
| Flywheel (lb) | 8 | 41 |
| Max user weight (lb) | 350 | 350 |
| Subscription required | No | Yes |
| Release | 2019 | 2021 |
Sources — Keiser M3i Indoor Bike: keiser.com (verified 2026-06-15). BODi Bike (formerly MYX II): barbend.com (verified 2026-06-15).
What's the difference between the Keiser M3i Indoor Bike and BODi Bike (formerly MYX II)?
Where the two actually differ on the specs we track (3 of 7). Matching specs are omitted.
- Resistance type: Keiser M3i Indoor Bike eddy current magnetic (non-contact) vs BODi Bike (formerly MYX II) friction
- Flywheel (lb): Keiser M3i Indoor Bike 8 vs BODi Bike (formerly MYX II) 41
- Subscription required: Keiser M3i Indoor Bike false vs BODi Bike (formerly MYX II) true
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Keiser M3i Indoor Bike
Only one whitelisted source, Garage Gym Reviews, published usable prose for the exact Keiser M3i; Wirecutter, TechGearLab, Reviewed and Tom's Guide had no M3i review. GGR calls it a durable, extremely smooth, time-tested studio-grade bike it deems worth its $2,000-plus price, while flagging a primitive, small display and the lack of a built-in screen. (1 sourced review.)
Praised: Extremely smooth ride; Durable, time-tested build that fits riders 4'10"-7' with a 350-lb capacity; Cheap app access at only $6.99/mo for interactive programming.
Flagged: Primitive and small display; No built-in screen to view interactive programming; High price (more than $2,400).
BODi Bike (formerly MYX II)
No sourced tester review yet.