IKLF competition rule. Ranking System & Tiers category.
For the base 'Rank' level, a minimum kettlebell weight of 16kg is required (confirmed from IKLF documentation example). Using a kettlebell lighter than 16kg disqualifies the lifter from achieving Rank, regardless of volume score.
16 kgSee the interactive comparison on KETTLEBELL MONSTER™ for filterable views and more detail.