Best adjustable

BowFlex SelectTech 840 Adjustable Kettlebell

8-40 lb in 6 settings · replaces six kettlebells

Shop now

on Amazon

Opens in a new tab. We may earn a commission; you pay the same.

  • Picked by research, never paid placement
  • Specs checked against maker data

Why we picked it

What to know before you buy

Key specs

  • Six settings: 8, 12, 20, 25, 35 and 40 lb via a turn-of-a-dial selector
  • Replaces six kettlebells in one 40 lb footprint; ships with cradle base
  • Composite (plastic) shell over steel plates with a welded steel handle
  • Fastest weight change of any adjustable tested (seconds, no tools)
  • 2-year warranty on manufacturing defects; 2-month JRNY app trial included

Read the full guide: Best Kettlebells for a Home Gym →

Photo is representative of the category; see the retailer page for product images.

Find it in: , ,