The most common reason people sell their BowFlex adjustable dumbbells is mechanical failure over time — the dial-selector system breaks down with regular use, and out-of-warranty repairs are expensive relative to the cost of a replacement set.
BowFlex's dial mechanism is the product's biggest convenience feature and its biggest liability. The plastic selector components wear out, stick, or crack, particularly under heavy or frequent use. When one weight position stops engaging correctly, the entire set becomes unsafe to lift. Sellers also cite the proprietary cradle requirement — BowFlex dumbbells can't be set down freely without risking damage to the dial housing, which frustrates users who want a less fussy training setup. Some sellers are simply switching to plate-loaded adjustable sets that have fewer mechanical parts to fail.
- BowFlex SelectTech 552 warranty covers manufacturing defects for 2 years on parts, 1 year on labor.
- BowFlex SelectTech 552 adjusts from 5 to 52.5 lbs per dumbbell in 2.5 lb increments via a dial mechanism.
- BowFlex dumbbells require the proprietary cradle tray for safe storage; setting them on the floor risks dial damage.
- Resale value for a functioning BowFlex 552 pair typically ranges from $150–$250 on secondary markets, depending on condition.