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Keiser M3i Total Body Trainer (5512)

Model: M3i Total Body Trainer (Model 5512; US SKU 005512BBC) · US configuration

Keiser M3i Total Body Trainer 5512 with saddle, pedals, moving exercise arms, foot pegs and console
Manufacturer-supplied image · Keiser M3i Total Body Trainer 5512, SKU 005512BBC.

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An upright seated magnetic-resistance trainer with moving arm handles, a 24-gear display and supported pedal-only, upper-body and combined workout arrangements.

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Why consider this model?

  • Consider the M3i TBT when you want an upright seated pedaling machine with optional moving-arm work or a supported feet-on-pegs upper-body mode, and have room for its 29-inch body plus operating clearance.

Tradeoffs to weigh

  • The arms cannot be locked and Keiser says there is no media tray; the live model FAQ lists a 300-lb limit while the exact manual and current shop list 350 lb, so verify the exact unit before treating 350 lb as an essential threshold.
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