Onnit Primal Kettlebell (16kg) vs Wattbike Atom (Next Gen) Smart Bike (2026)
Which is better? We compared both on score, owner ratings, pros and cons.
Onnit Primal Kettlebell (16kg)
Competition-spec cast iron. Flat base. The most popular single kettlebell for home training.
Check Price ↗ Full Review
Wattbike Atom (Next Gen) Smart Bike
0-2500W resistance, ERG mode, accurate power meter, Zwift optimised. Professional training bike.
Check Price ↗ Full ReviewAt a Glance
| Onnit Primal Kettlebell (16kg) | Wattbike Atom (Next Gen) Smart Bike | |
|---|---|---|
| 247Verdict Score | 9.0/10 | 9.3/10 |
| Owner Rating | 4.8★ (6,200) | 4.5★ (2,400) |
| Verdict | Excellent | Excellent |
Quick Verdict
Both are strong choices, but the Wattbike Atom (Next Gen) Smart Bike edges ahead with a 9.3/10 vs 9.0/10. 0-2500W resistance, ERG mode, accurate power meter, Zwift optimised. Professional training bike. That said, the Onnit Primal Kettlebell (16kg) is worth considering if Competition-spec cast iron. Flat base. The most popular single kettlebell for home training..
Pros & Cons Side by Side
Onnit Primal Kettlebell (16kg)
- Competition-specification dimensions — consistent feel across all weights
- Flat base for push-up variations and renegade rows
- Single-piece casting with no welds or seams that catch on calluses
- Powder-coated finish prevents rust and provides grip without chalk
- 16kg is the ideal starting weight for most adults' first kettlebell
- Single fixed weight — need multiple bells as strength progresses
- Premium brand pricing vs generic cast iron alternatives
- The primate face design is polarising aesthetically
Wattbike Atom (Next Gen) Smart Bike
- 0-2500W resistance range covers everyone from casual cyclists to professional athletes
- Electromagnetic resistance provides infinite adjustment and accurate power measurement
- ERG mode holds precise wattage for structured training intervals automatically
- The most accurate power meter of any home exercise bike — within ±2% of professional equipment
- Used by professional cycling teams and national sports institutes for training
- £2,200+ — the most expensive bike in this comparison
- No built-in screen — requires iPad, tablet or Zwift device
- Wattbike Hub subscription ($14.99/month) for full training analytics
FAQ
Which is better, Onnit Primal Kettlebell (16kg) or Wattbike Atom (Next Gen)?
Both are strong choices, but the Wattbike Atom (Next Gen) Smart Bike edges ahead with a 9.3/10 vs 9.0/10. 0-2500W resistance, ERG mode, accurate power meter, Zwift optimised. Professional training bike. That said, the Onnit Primal Kettlebell (16kg) is worth considering if Competition-spec cast iron. Flat base. The most popular single kettlebell for home training..
Is the Onnit Primal Kettlebell (16kg) worth the extra cost?
The Wattbike Atom (Next Gen) Smart Bike matches or exceeds it at a potentially lower price point.
Also Worth Considering
Bowflex SelectTech 552 Adjustable Dumbbells
Replaces 15 pairs of dumbbells. Turn the dial, pick 2.5–24kg in 2 seconds.
Check Price ↗ Full Review
Rogue Echo Bike
Unlimited air resistance, full-body fan bike, steel construction, LCD console, CrossFit standard.
Check Price ↗ Full Review
Theragun Pro 5th Generation
16mm amplitude percussion therapy. Used by professional sports teams. The recovery standard.
Check Price ↗ Full Review