MX SELECT Rapid Change Dumbbell Systems feature our unique patented rack-and-pinion design with a secure Positive Lock System. Your selected weight is locked in place, allowing you to train with complete confidence and precision when adjusting weights. Designed to work with the MX55 EVO, MX70/100 EVO and the MX100 EVO Dumbbell systems.
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47 ratings
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I really enjoy how these click into the dumbbells and are flush. The crate the weights are in just click into the main part of the dumbbell holders easily. That said, the little plastic part inbetween the 2 plates is very flimsy and honestly sucks. It falls off because it doesn’t actually connect to anything and only gets held there by the plates. So if you take the plates out it usually just falls out. This really gets on my nerves as it falls out constantly. The price point is also very expensive in comparison to the dumbbells but I understand they are versatile, that said, $70 is way too much for them as it is mostly just plastic. Honestly, this review should, and would be a 2 star review had they not been perfectly accurate on the weight and be very easy to use. They do work like a charm and the magnets are very strong so I know it will not fall out at any point. The glue on the magnets does show a bit and look a little messy but this does not effect the performance.
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Sam · August 14, 2026
High quality dumbbell accessory . The storage case provides ease of use.
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Ira · September 1, 2026
If you want the in betweens like 25, 35 45 etc i was just offsetting the weights (one side 20 one side 30 to get 25) that works if you dont mind the weight being a little off balance but if it bugs you get these plate upgrades. Quick and easy to get those in-betweens