Schwinn
Schwinn IC4 Indoor Cycling Bike
$899Cheaper
Released 2020
Best Exercise Bikes · head-to-head
Schwinn IC4 Indoor Cycling Bike vs Keiser M3i Indoor Bike
A sourced, side-by-side comparison. Schwinn IC4 Indoor Cycling Bike is cheaper at $899. Every spec and price links to its source.
Keiser
Keiser M3i Indoor Bike
$2985
Released 2019
Which is better: the Schwinn IC4 Indoor Cycling Bike or Keiser M3i Indoor Bike?
They split the 2 specs we compare evenly. The Schwinn IC4 Indoor Cycling Bike is the cheaper at $899.
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Full spec sheet
✓ marks the stronger figure where "more" — or "less", for price and weight — is unambiguously better.
| Spec | Schwinn IC4 Indoor Cycling Bike | Keiser M3i Indoor Bike |
|---|---|---|
| US price | $899 | $2985 |
| Brand | Schwinn | Keiser |
| Released | 2020 | 2019 |
| Bike type | indoor | indoor |
| Resistance type | magnetic | eddy current magnetic (non-contact) |
| Resistance levels | 100 | 24 |
| Touchscreen (in) | — | — |
| Flywheel (lb) | 40 | 8 |
| Max user weight (lb) | 330 | 350 |
| Subscription required | No | No |
| Release | 2020 | 2019 |
Sources — Schwinn IC4 Indoor Cycling Bike: schwinnfitness.com (verified 2026-06-15). Keiser M3i Indoor Bike: keiser.com (verified 2026-06-15).
What's the difference between the Schwinn IC4 Indoor Cycling Bike and Keiser M3i Indoor Bike?
Where the two actually differ on the specs we track (4 of 7). Matching specs are omitted.
- Resistance type: Schwinn IC4 Indoor Cycling Bike magnetic vs Keiser M3i Indoor Bike eddy current magnetic (non-contact)
- Resistance levels: Schwinn IC4 Indoor Cycling Bike 100 vs Keiser M3i Indoor Bike 24
- Flywheel (lb): Schwinn IC4 Indoor Cycling Bike 40 vs Keiser M3i Indoor Bike 8
- Max user weight (lb): Schwinn IC4 Indoor Cycling Bike 330 vs Keiser M3i Indoor Bike 350
What reviewers say
Sourced tester consensus for each — the "what people who used it think" layer, not just specs.
Schwinn IC4 Indoor Cycling Bike
Two whitelisted hands-on reviewers covered this exact model - Garage Gym Reviews (GGR score 4.5) and BarBend. Both praise the sturdy, non-wobbling build, Peloton/Zwift app compatibility, and sub-$1,000 value as a Peloton alternative. Both flag the small, bare-bones LCD. GGR additionally reports inaccurate, laggy console metrics (worse on Android); BarBend notes few tech features (no touchscreen, fans, or speakers). Neither outlet published measured numbers, so the flywheel, resistance-level, and weight-capacity figures are manufacturer-stated, not lab-verified. (2 sourced reviews.)
Praised: Sturdy, stable build that does not wobble under load; App compatibility with Peloton and Zwift; Strong value as a sub-$1,000 Peloton alternative.
Flagged: Small, bare-bones LCD display; Inaccurate/laggy console metrics (worse on Android); Few tech features - no touchscreen, fans, or speakers.
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).