Lever Collars - Massenomics Edition

The Lever Collars - Massenomics Edition is The Strength Co.’s clamp-style barbell collar in a Massenomics-branded black powder coat, made in the USA from extruded aluminum with rubber inserts. A lever mechanism lets it clip directly onto a barbell sleeve rather than sliding on, and it can “flip” open to add plates without fully removing the collar – a design that fits standard Olympic sleeves as well as specialty bars like axles and safety squat bars. At roughly a pound per pair and one inch of sleeve space, it’s one of the slimmer, lighter options in its category. The lever’s contact point is a replaceable UHMW wear pad, and the manufacturer told a reviewer it’s backed by a lifetime warranty (parts replacement available by request, not listed on the site).

Independent coverage is more mixed than the manufacturer’s marketing suggests. Garage Gym Lab’s load testing found real downward slippage on a standard barbell and some chipping on the aluminum finish, positioning it as better suited to loadable dumbbells than a primary barbell collar. GymRadar’s 14 owner reviews average 4.45/5, but several long-term owners independently report the same durability pattern – glued rubber and retaining pins failing within months – and a tendency for the collar to pop off during dynamic platform movements like deadlifts and cleans, leading multiple reviewers to restrict its use to rack lifts.