MX55 Dumbbell Specifications and Weight Settings
A source-linked reference for the MX Select MX55: weight range, balanced settings, handle versions, storage footprint and the checks to make before lifting.
Last updated November 2026
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The MX Select MX55 is a cradle-based adjustable dumbbell with a listed range of 10 to 55 pounds per hand. Its standard balanced settings rise in 5-pound steps. Check the handle version before comparing a listing: the knurled steel and contoured-grip MX55 share a model name, but they are different versions.
This is an independent reference to the maker's documents, checked November 1, 2026. Use the manual supplied with your exact version for setup and repairs.
MX55 specifications at a glance
The MX55 knurled-handle brochure lists these figures. The weight range is for one dumbbell; the footprint covers the pair in their cradles.
| Item | Published specification |
|---|---|
| Weight per dumbbell | 10–55 lb |
| Balanced step | 5 lb |
| Length at minimum weight | 9.58 in |
| Length at maximum weight | 15.94 in |
| Grip length | 5.31 in |
| Grip diameter | 1.29 in |
| Pair's footprint in cradles | 16.02 × 16.29 in |
| Height in cradles | 8.14 in |
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Those storage measurements are not a workout clearance plan. Leave room to stand, pick the weights up and move through the exercise. Our room-fit planner can help lay out the larger equipment around your lifting area.
Weight settings and the 2.5-pound wording
For even loading, the MX55 owner's manual gives ten settings: 10, 15, 20, 25, 30, 35, 40, 45, 50 and 55 pounds. It also mentions 2.5-pound increments and describes unequal end settings. Those are not the same as ten additional balanced settings.
Use the ten-setting table when comparing the normal balanced range. Do not read the 2.5-pound wording as a promise of extra balanced settings. Read the matching manual rather than changing one end based on a retailer's summary.
How the selector works
Weight changes happen with the handset returned to its cradle. The manual describes a release button that lets the selector dial rise. After choosing a setting, push the dial fully down to lock it before lifting. Set both ends for balanced loading and check that only the intended plates rise smoothly.
If a dial will not lock or extra plates lift, stop and use the maker's support instructions. Do not force a stuck selector or improvise a repair. For the broader differences between dial, pin and plate-loaded systems, see how adjustable dumbbells work.
Knurled and contoured handles
The brochure identifies a knurled steel grip. The maker's separate contoured MX55 page identifies an antimicrobial contoured grip. A photograph or a model name alone is not enough to tell which handle a seller will ship.
Ask for the exact version, matching manual and included parts. Check whether the listing is a pair or a single unit, and whether it includes cradles or an optional stand. Keep shipping-box dimensions separate from the space the assembled equipment needs.
Care and limits
The owner's manual warns against dropping the handset and says to return it to the cradle for weight changes and storage. A protective floor does not make dropping a selector dumbbell safe. Keep the cradle on a stable surface and follow the maker's inspection and maintenance instructions.
Verdict
The MX55's useful comparison points are its 10-pound starting weight, 55-pound ceiling, 5-pound balanced steps and handle version. Match those to your exercises and check the exact unit before buying. This reference does not establish current stock, a selling price or the condition of a used set.