Bowflex SelectTech 552 vs PowerBlock Pro 50

Bowflex SelectTech 552 versus PowerBlock Pro 50 is a spec comparison, not a test. Selector dial versus selector pin. Every number below is copied from a manufacturer page or official sheet and carries an as-of date of 2026-10-14 on the product records. If a field is blank on the maker’s page, it stays blank here.

Bowflex describes the Bowflex SelectTech 552 as: Dial-adjustable pair covering 5–52.5 lb per hand across 15 published settings in a 16.9 × 8.3 × 9 in footprint, with a 2-year parts warranty. Bowflex publishes 15 settings per dumbbell from 5 to 52.5 lb: 5, 7.5, 10, 12.5, 15, 17.5, 20, 22.5, 25, 30, 35, 40, 45, 50, and 52.5 lb. Each unit is listed at 16.9 in L × 8.3 in W × 9 in H with quick-adjustment selection dials and a 2-year parts warranty. The pair is sold with storage trays; a stand is sold separately.

PowerBlock describes the PowerBlock Pro 50 as: Non-expandable 5–50 lb selector-pin pair in a 13 × 7 × 7.25 in frame, with 2.5 and 5 lb increments and a 5-year residential warranty. PowerBlock publishes a 5–50 lb range with selectable weights in 2.5 lb steps from 5 through 50 lb. Dimensions are 13 × 7 × 7.25 in, finish is black urethane, grip is 4.88 in / 38 mm contoured TPR, and adjustment is a magnetic selector pin. The pair is listed on the manufacturer page with a 5-year limited residential warranty and is compatible with Pro Series bar and kettlebell attachments.

On listed height, Bowflex SelectTech 552 is 9 in and PowerBlock Pro 50 is 7.25 in. Width is 8.3 in versus 7 in. Depth / length is not published in versus not published in (falling back to a listed length where a maker omits depth). Unit weight is 54.6 lb versus not published lb. Listed load or user capacity is not published lb versus not published lb.

Published range is 5–52.5 lb versus 5–50 lb. Increment is 2.5 lb versus 2.5 lb. Mechanism is dial versus magnetic selector pin. Listed length is 16.9 in versus 13 in. A 2.5 lb step at the bottom of a dial pair is not the same as a uniform 5 lb twist handle. Warranty text is “Parts 2 Years” versus “5 year limited warranty – residential use only”.

FitScout spec scores — our weighted rubric, not Amazon stars — are 56 for Bowflex SelectTech 552 and 63 for PowerBlock Pro 50. Missing fields do not count as zeros; they drop out of the average. The rubric for adjustable dumbbells is published on the methodology page.

We do not print manufacturer list prices or Amazon prices on this page. Use Check price on each card for the current offer.

Who the Bowflex SelectTech 552 is for, in our reading of the spec sheet: Lifters who want a manufacturer-published 5–52.5 lb dial pair that replaces 15 fixed weights in one compact tray-based set. Skip it when needs more than 52.5 lb per hand or a single uniform increment across the full range.

Who the PowerBlock Pro 50 is for: Lifters who want PowerBlock's published 5–50 lb non-expandable Pro set with 2.5 lb micro weights included in the handles. Skip it when expects to exceed 50 lb per hand; PowerBlock states the Pro 50 cannot expand.

If ceiling height is the constraint, prefer the shorter published frame and then run Will-It-Fit with your ceiling, your height, and the exercise. HAJEX’s standing-press rule of thumb is height × 1.33 plus about 9 in for full-size plates. A rack that “fits the room” on assembled height can still fail a pull-up if there is not about a foot above the bar.

This page does not say either product was used, assembled, or worn-in by FitScout. Sources are the manufacturer URLs on each spec row. If a maker updates a dimension after 2026-10-14, the as-of date is the tell.

653 words. Spec-based analysis, not a test report.