The BowFlex SelectTech 552 is the better budget adjustable dumbbell at a $399 sale price, while the REP x PÉPIN Fast Series justifies its higher cost for lifters who need a 125 lb ceiling and a lifetime warranty.
At a Glance: BowFlex 552 vs REP x PÉPIN
The BowFlex SelectTech 552 is the value pick for most home lifters. It lists at a $399 sale price (regularly $479) and adjusts from 5 to 52.5 lb per dumbbell, which covers beginner and intermediate training.
The REP x PÉPIN Fast Series is the upgrade for lifters who need more. It reaches 125 lb per dumbbell and starts at $899.99. Buy the BowFlex 552 on a budget; buy the REP x PÉPIN for durability and headroom.
BowFlex SelectTech 552: The Budget Dial Dumbbell
Weight range, settings, and increments
BowFlex sells the Results Series 552 as a pair, and the pair replaces 15 sets of fixed weights. Each dumbbell spans 5 to 52.5 lb across 15 weight settings: 5, 7.5, 10, 12.5, 15, 17.5, 20, 22.5, 25, 30, 35, 40, 45, 50, and 52.5 lb. Wirecutter notes the fine 2.5 lb changes only apply from 5 to 25 lb, after which the jumps widen to reach the 52.5 lb maximum.
Adjustment mechanism, build, and storage
The 552 adjusts through quick-adjustment weight selection dials. Each dumbbell measures 16.9” L x 8.3” W x 9” H, and Wirecutter calls the 16.9 inches length long enough to feel unwieldy for some presses and raises. BowFlex adds non-slip grips and includes storage trays for the pair.
The 2025 recall and the Results Series redesign
This is the history buyers most need to know. The original BowFlex SelectTech 552 was recalled in June 2025. Wirecutter reports the recall covered more than 3.8 million sets after more than 300 reported cases of plates dislodging during use. BowFlex then debuted a redesigned version in August 2025. Everything in this guide refers to that redesigned Results Series 552, not the recalled model, so check the serial number before buying secondhand.
REP x PÉPIN Fast Series: The Heavy-Duty Upgrade
Weight range, increments, and pair sizes
The REP x PÉPIN Fast Series is a partnership between REP and Canada-based Pépin, designed and engineered in the USA. A single dumbbell starts at 10 lb and reaches 125 lb, which REP says replaces 23 pairs of fixed dumbbells. Weight changes happen in 10 lb jumps through magnetic pop-pins, with 2.5 lb micro-plates for finer steps up to the 125 lb ceiling.
Mechanism, materials, and durability
The mechanism is the Fast Series’ signature: magnetic pop-pins press out, slide to the chosen weight, and click back into place. The build is 11-gauge steel, with nickel-plated 34 mm handles and volcano-style knurling. A single dumbbell is 18.3 inches long, and REP rates the pair’s storage setup for a 1,000 lb weight capacity. The set carries a lifetime warranty, and REP’s own review summary scores it 4.8 out of 5 across 597 reviews, with 96% of buyers saying they would recommend it.
Spec Comparison: BowFlex vs REP x PÉPIN vs Core Home Fitness
| Feature | BowFlex SelectTech 552 | REP x PÉPIN Fast Series | Core Home Fitness |
|---|---|---|---|
| Price (per pair) | $399 sale ($479 regular) | $899.99 | $390 |
| Weight range per dumbbell | 5–52.5 lb | 10–125 lb | 5–50 lb |
| Weight increments | 15 settings, 2.5 lb steps to 25 lb | 10 lb jumps + 2.5 lb micro-plates | 5 lb steps |
| Adjustment mechanism | Weight-selection dials | Magnetic pop-pins | Not stated by the maker |
| Warranty | 2 years, parts | Lifetime | Not stated by the maker |
| Materials | Not stated by the maker | 11-gauge steel | Not stated by the maker |
If you want a budget dial set for beginner-to-intermediate training, the BowFlex SelectTech 552 is the one to start with.
How to Choose: Which Dumbbell Fits Your Home Gym
Buy the BowFlex 552 if you want a budget dial set
Choose the BowFlex 552 if price is the deciding factor. At a $399 sale price (regularly $479), it undercuts the REP x PÉPIN’s $899.99 entry by a wide margin, and its 15 settings up to 52.5 lb cover everything a beginner or intermediate lifter needs. Garage Gym Reviews lists the same 5 to 52.5 lb range with a 52.5 lb maximum. The quick-adjust dials make mid-workout changes faster than a pin-and-plate set.
Buy the REP x PÉPIN if you lift heavy and want it to last
Choose the REP x PÉPIN Fast Series if you train heavy and want a set you will not outgrow. Its 125 lb ceiling comfortably clears the BowFlex 552’s 52.5 lb, the 11-gauge steel build is made for years of abuse, and a lifetime warranty removes the durability risk. Garage Gym Reviews crowned it its top adjustable-dumbbell pick with a 4.6-star rating. If you outgrow the 552, BowFlex’s heavier Results Series 1090 spans 10 to 90 lb, but it still falls short of the REP’s ceiling.
Consider Core Home Fitness as a lighter budget pick
The Core Home Fitness Adjustable Dumbbell Set is a lighter, cheaper alternative for budget buyers. Wirecutter describes a 5 to 50 lb range in 5 lb increments, priced at $390. It is the pick when you want to spend the least while still getting a full adjustable set.
Bottom line: buy the BowFlex 552 if you want a budget dial set for beginner-to-intermediate training, and buy the REP x PÉPIN Fast Series if you lift heavy and want a set built to last. For more home-gym buying guidance, browse the Fitness & Outdoors hub.
