Kettlebell Series — Wholesale OEM Manufacturer | ShuangJia Sports

ShuangJia Sports is a China-based kettlebell manufacturer with over 20 years of casting experience. Our ISO 9001 certified factory in Dingzhou, Hebei produces kettlebells for CrossFit boxes, commercial gyms, boutique studios, and retail brands across 50+ countries.

Every ShuangJia kettlebell is single-piece cast iron — no weld joints, no weak points. We pour gray iron and ductile iron in our own foundry, grind every handle smooth by hand, and apply finishes from electrostatic paint to rubber coating, PU, PVC, and vinyl in-house. Weight tolerance is controlled within ±2% per kettlebell.

From 4 kg to 48 kg, competition steel to vinyl-coated, we offer the full range with fully customizable branding options: cast-in logo, color options, custom packaging, and FBA-ready labeling. Minimum order starts at 100 pieces.